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Question 1
Incorrect
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A 45-year-old woman presents with a severe headache that has been ongoing for the past 3 hours. She describes it as the 'most intense headache she has ever experienced'. She also complains of sensitivity to light and stiffness in her neck. There is no history of any head injury. Initially, she was treated conservatively and her symptoms improved. However, on the third day, she had a seizure and lost the ability to move her left arm. Physical examination reveals weakness in the left arm but normal sensation. A CT scan of her head shows a localized area of decreased density in the right frontal lobe, with a loss of distinction between grey and white matter and surrounding swelling.
What is the most likely cause of her current condition?Your Answer: Obstructive hydrocephalus
Correct Answer: Cerebral vasospasm
Explanation:Intracranial hemorrhages can be categorized based on their location into epidural, subdural, subarachnoid, or intracerebral hemorrhages. The patient in this case is experiencing a severe headache accompanied by signs of meningismus, which strongly suggests a diagnosis of subarachnoid hemorrhage. Additionally, there is no history of trauma, and most cases of subarachnoid hemorrhage are caused by the rupture of a berry aneurysm located in the circle of Willis. Hypertension is a significant risk factor for the rupture of an aneurysm.
During the patient’s hospital stay, they develop an ischemic stroke, which is confirmed by a CT scan. This is most likely a result of cerebral vasospasm secondary to the subarachnoid hemorrhage. To prevent this complication, patients are often treated with the cerebral selective calcium channel blocker Nimodipine.
Another potential complication of this condition is rebleeding, with the highest risk occurring in the first few days. Rebleeding can be potentially fatal, so it is crucial to repair the aneurysm as soon as possible. The presence of blood in the subarachnoid space can also disrupt the production and drainage of cerebrospinal fluid, leading to hydrocephalus.
Long-term complications of subarachnoid hemorrhage include epilepsy, with most patients experiencing their first seizure within a year after the hemorrhage. However, the risk of epilepsy decreases over time. Cognitive dysfunction is also a common long-term complication and can manifest as memory loss, difficulty concentrating, or challenges in performing regular tasks. Emotional problems, such as depression and anxiety, are frequently observed as well.
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This question is part of the following fields:
- Neurology
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Question 2
Correct
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A 25-year-old individual comes in with a fever and symptoms resembling the flu. They also complain of muscle pain, diarrhea, and a dry cough. During the examination, their temperature is measured at 38.3°C and they exhibit tenderness in the upper right quadrant of their abdomen. Upon further inquiry, it is revealed that they recently returned from a backpacking trip to Malawi, where they recall developing blisters on their ankles after swimming in a lake. Blood tests indicate a significant increase in eosinophils.
What is the SINGLE most likely diagnosis?Your Answer: Schistosomiasis
Explanation:Schistosomiasis, also known as bilharzia, is a tropical disease caused by parasitic trematodes (flukes) of the Schistosoma type. The transmission of this disease occurs when water becomes contaminated with faeces or urine containing eggs, and a specific freshwater snail serves as the intermediate host. Human contact with water inhabited by the intermediate host snail is necessary for transmission to occur.
There are five species of Schistosoma that can cause human disease, namely S. japonicum, S. mansoni, S. haematobium, S. intercalatum, and S. mekongi. Schistosomiasis is the second most impactful tropical disease in terms of public health, following malaria, with over 200 million people worldwide being infected. It is prevalent in the Middle East, Africa, and parts of South America and the Caribbean. Infection can manifest as either acute or chronic.
Acute schistosomiasis is characterized by the early clinical sign of swimmers itch, which involves the development of blisters and an urticarial response at the site where the Schistosoma parasite enters the skin. This typically occurs a few days after the parasite has penetrated the skin. While most acute infections are asymptomatic, some individuals may experience an acute syndrome.
The most common acute syndrome is known as Katayama fever, which primarily affects children or young adults with no previous exposure to the disease. It is caused by an allergic reaction to the sudden release of highly antigenic eggs and usually occurs a few weeks after initial exposure to S. japonicum. Symptoms of Katayama fever include fever, flu-like illness, arthralgia, myalgia, abdominal pain, diarrhea, and cough. Patients may also exhibit right upper quadrant tenderness and hepatosplenomegaly. An extremely high eosinophil count is often present.
Chronic schistosomiasis can manifest in two major forms: intestinal and urogenital. Intestinal schistosomiasis is primarily caused by S. japonicum and S. mansoni, while S. haematobium is the main cause of urogenital schistosomiasis. In intestinal schistosomiasis, adult worms migrate from the liver to the mesenteric venules, where female worms continuously lay eggs. Common symptoms include abdominal pain and bloody diarrhea.
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This question is part of the following fields:
- Infectious Diseases
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Question 3
Correct
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A 5-year-old girl is brought to the Emergency Department by her father following a fall in the playground at daycare. She has a bruise and a small scrape on her right knee and is walking with a slight limp, but she can put weight on her leg. Her pain is assessed using a numerical rating scale, and the triage nurse informs you that she has 'mild discomfort'.
According to the RCEM guidance, which of the following analgesics is recommended as a loading dose for the treatment of mild discomfort in a child of this age?Your Answer: Oral paracetamol 20 mg/kg
Explanation:A recent audit conducted by the Royal College of Emergency Medicine (RCEM) in 2018 revealed a concerning decline in the standards of pain management for children with fractured limbs in Emergency Departments (EDs). The audit found that the majority of patients experienced longer waiting times for pain relief compared to previous years. Shockingly, more than 1 in 10 children who presented with significant pain due to a limb fracture did not receive any pain relief at all.
To address this issue, the Agency for Health Care Policy and Research (AHCPR) in the USA recommends following the ABCs of pain management for all patients, including children. This approach involves regularly asking about pain, systematically assessing it, believing the patient and their family in their reports of pain and what relieves it, choosing appropriate pain control options, delivering interventions in a timely and coordinated manner, and empowering patients and their families to have control over their pain management.
The RCEM has established standards that require a child’s pain to be assessed within 15 minutes of their arrival at the ED. This is considered a fundamental standard. Various rating scales are available for assessing pain in children, with the choice depending on the child’s age and ability to use the scale. These scales include the Wong-Baker Faces Pain Rating Scale, Numeric rating scale, and Behavioural scale.
To ensure timely administration of analgesia to children in acute pain, the RCEM has set specific standards. These standards state that 100% of patients in severe pain should receive appropriate analgesia within 60 minutes of their arrival or triage, whichever comes first. Additionally, 75% should receive analgesia within 30 minutes, and 50% within 20 minutes.
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This question is part of the following fields:
- Pain & Sedation
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Question 4
Correct
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A new Emergency Department nurse is required to verify her immunity to hepatitis B before starting her position. She has received a hepatitis B vaccination series in the past but cannot remember the specific dates.
What ONE blood test result would indicate that she has developed immunity as a result of her hepatitis B vaccination?Your Answer: HBsAg negative, anti-HBs positive
Explanation:Hepatitis B surface antigen (HBsAg) is a protein found on the surface of the hepatitis B virus. It can be detected in high levels in the blood during both acute and chronic hepatitis B virus infections. The presence of HBsAg indicates that the person is capable of spreading the infection to others. Normally, the body produces antibodies to HBsAg as part of the immune response to the infection. HBsAg is also used to create the hepatitis B vaccine.
Hepatitis B surface antibody (anti-HBs) indicates that a person has recovered from the hepatitis B virus infection and is now immune to it. This antibody can also develop in individuals who have been successfully vaccinated against hepatitis B.
Total hepatitis B core antibody (anti-HBc) appears when symptoms of acute hepatitis B begin and remains present for life. The presence of anti-HBc indicates that a person has either had a previous or ongoing infection with the hepatitis B virus, although the exact time frame cannot be determined. This antibody is not present in individuals who have received the hepatitis B vaccine.
IgM antibody to hepatitis B core antigen (IgM anti-HBc) indicates a recent infection or acute hepatitis B. If this antibody is present, it suggests that the infection occurred within the past six months.
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This question is part of the following fields:
- Gastroenterology & Hepatology
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Question 5
Correct
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A 60-year-old man presents with frequent urination and excessive thirst. He has a history of bipolar affective disorder, which has been effectively managed with lithium for many years.
You schedule blood tests for him, and the results are as follows:
Na: 150 mmol/L (135-147 mmol/L)
K: 3.7 mmol/L (3.5-5.5 mmol/L)
Urea: 9.5 mmol/L (2.0-6.6 mmol/L)
Creatinine: 127 mmol/L (75-125 mmol/L)
What is the SINGLE most likely diagnosis?Your Answer: Nephrogenic diabetes insipidus
Explanation:Diabetes insipidus is a condition where the body is unable to produce concentrated urine. It is characterized by excessive thirst, increased urination, and constant need to drink fluids. There are two main types of diabetes insipidus: cranial (central) and nephrogenic.
Cranial diabetes insipidus occurs when there is a deficiency of vasopressin, also known as antidiuretic hormone. This hormone helps regulate the amount of water reabsorbed by the kidneys. In patients with cranial diabetes insipidus, urine output can be as high as 10-15 liters per day. However, with adequate fluid intake, most patients are able to maintain normal sodium levels. The causes of cranial diabetes insipidus can vary, with 30% of cases being idiopathic (unknown cause) and another 30% being secondary to head injuries. Other causes include neurosurgery, brain tumors, meningitis, granulomatous disease (such as sarcoidosis), and certain medications like naloxone and phenytoin. There is also a very rare inherited form of cranial diabetes insipidus that is associated with diabetes mellitus, optic atrophy, nerve deafness, and bladder atonia.
On the other hand, nephrogenic diabetes insipidus occurs when there is resistance to the action of vasopressin in the kidneys. Similar to cranial diabetes insipidus, urine output is significantly increased in patients with nephrogenic diabetes insipidus. Serum sodium levels can be maintained through excessive fluid intake or may be elevated. The causes of nephrogenic diabetes insipidus include chronic renal disease, metabolic disorders like hypercalcemia and hypokalemia, and certain medications like long-term use of lithium and demeclocycline.
Based on the history of long-term lithium use in this particular case, nephrogenic diabetes insipidus is the most likely diagnosis.
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This question is part of the following fields:
- Pharmacology & Poisoning
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Question 6
Incorrect
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A 45-year-old with a history of bipolar disorder is brought into the emergency department after intentionally taking an excessive amount of lithium. What acid-base disturbances would you anticipate in a patient who has overdosed on lithium?
Your Answer: Normal ion gap acidosis
Correct Answer: Low anion gap acidosis
Explanation:Excessive intake of lithium is linked to the development of low anion gap acidosis. In cases of lithium overdose, a common outcome is the occurrence of low anion gap acidosis.
Further Reading:
Arterial blood gases (ABG) are an important diagnostic tool used to assess a patient’s acid-base status and respiratory function. When obtaining an ABG sample, it is crucial to prioritize safety measures to minimize the risk of infection and harm to the patient. This includes performing hand hygiene before and after the procedure, wearing gloves and protective equipment, disinfecting the puncture site with alcohol, using safety needles when available, and properly disposing of equipment in sharps bins and contaminated waste bins.
To reduce the risk of harm to the patient, it is important to test for co-lateral circulation using the modified Allen test for radial artery puncture. Additionally, it is essential to inquire about any occlusive vascular conditions or anticoagulation therapy that may affect the procedure. The puncture site should be checked for signs of infection, injury, or previous surgery. After the test, pressure should be applied to the puncture site or the patient should be advised to apply pressure for at least 5 minutes to prevent bleeding.
Interpreting ABG results requires a systematic approach. The core set of results obtained from a blood gas analyser includes the partial pressures of oxygen and carbon dioxide, pH, bicarbonate concentration, and base excess. These values are used to assess the patient’s acid-base status.
The pH value indicates whether the patient is in acidosis, alkalosis, or within the normal range. A pH less than 7.35 indicates acidosis, while a pH greater than 7.45 indicates alkalosis.
The respiratory system is assessed by looking at the partial pressure of carbon dioxide (pCO2). An elevated pCO2 contributes to acidosis, while a low pCO2 contributes to alkalosis.
The metabolic aspect is assessed by looking at the bicarbonate (HCO3-) level and the base excess. A high bicarbonate concentration and base excess indicate alkalosis, while a low bicarbonate concentration and base excess indicate acidosis.
Analyzing the pCO2 and base excess values can help determine the primary disturbance and whether compensation is occurring. For example, a respiratory acidosis (elevated pCO2) may be accompanied by metabolic alkalosis (elevated base excess) as a compensatory response.
The anion gap is another important parameter that can help determine the cause of acidosis. It is calculated by subtracting the sum of chloride and bicarbonate from the sum of sodium and potassium.
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This question is part of the following fields:
- Pharmacology & Poisoning
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Question 7
Incorrect
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A 28 year old male is brought into the ED after being discovered in a collapsed state. The patient is making minimal effort to breathe. The patient is a known IV drug user. The attending physician requests that you obtain an arterial blood gas sample from the radial artery. The blood gas is collected and the results are as follows:
pH 7.30
pO2 8.8 kPa
pCO2 7.4 kPa
Bicarbonate 26 mmol/L
Chloride 98 mmol/L
Potassium 5.6 mmol/L
Sodium 135 mmol/L
What type of acid-base abnormality is indicated?Your Answer: Respiratory acidosis with metabolic compensation
Correct Answer: Respiratory acidosis
Explanation:Respiratory acidosis occurs when the respiratory system is unable to effectively remove carbon dioxide from the body, leading to an increase in acidity. This is often seen in cases of opioid overdose, where respiratory depression can occur. In respiratory acidosis, the bicarbonate levels may rise as the body’s metabolic system tries to compensate for the increased acidity.
Further Reading:
Arterial blood gases (ABG) are an important diagnostic tool used to assess a patient’s acid-base status and respiratory function. When obtaining an ABG sample, it is crucial to prioritize safety measures to minimize the risk of infection and harm to the patient. This includes performing hand hygiene before and after the procedure, wearing gloves and protective equipment, disinfecting the puncture site with alcohol, using safety needles when available, and properly disposing of equipment in sharps bins and contaminated waste bins.
To reduce the risk of harm to the patient, it is important to test for collateral circulation using the modified Allen test for radial artery puncture. Additionally, it is essential to inquire about any occlusive vascular conditions or anticoagulation therapy that may affect the procedure. The puncture site should be checked for signs of infection, injury, or previous surgery. After the test, pressure should be applied to the puncture site or the patient should be advised to apply pressure for at least 5 minutes to prevent bleeding.
Interpreting ABG results requires a systematic approach. The core set of results obtained from a blood gas analyser includes the partial pressures of oxygen and carbon dioxide, pH, bicarbonate concentration, and base excess. These values are used to assess the patient’s acid-base status.
The pH value indicates whether the patient is in acidosis, alkalosis, or within the normal range. A pH less than 7.35 indicates acidosis, while a pH greater than 7.45 indicates alkalosis.
The respiratory system is assessed by looking at the partial pressure of carbon dioxide (pCO2). An elevated pCO2 contributes to acidosis, while a low pCO2 contributes to alkalosis.
The metabolic aspect is assessed by looking at the bicarbonate (HCO3-) level and the base excess. A high bicarbonate concentration and base excess indicate alkalosis, while a low bicarbonate concentration and base excess indicate acidosis.
Analyzing the pCO2 and base excess values can help determine the primary disturbance and whether compensation is occurring. For example, a respiratory acidosis (elevated pCO2) may be accompanied by metabolic alkalosis (elevated base excess) as a compensatory response.
The anion gap is another important parameter that can help determine the cause of acidosis. It is calculated by subtracting the sum of chloride and bicarbonate from the sum of sodium and potassium.
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This question is part of the following fields:
- Respiratory
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Question 8
Correct
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A 7-year-old girl comes in with a painful throat and a dry cough that has been bothering her for two days. During the examination, she does not have a fever and has a few tender lymph nodes in the front of her neck. Her throat and tonsils look red and inflamed, but there is no pus on her tonsils.
What is her FeverPAIN score?Your Answer: 2
Explanation:The FeverPAIN score is a scoring system that is recommended by the current NICE guidelines for assessing acute sore throats. It consists of five items: fever in the last 24 hours, purulence, attendance within three days, inflamed tonsils, and no cough or coryza. Based on the score, different recommendations are given regarding the use of antibiotics.
If the score is 0-1, it is unlikely to be a streptococcal infection, with only a 13-18% chance of streptococcus isolation. Therefore, antibiotics are not recommended in this case. If the score is 2-3, there is a higher chance (34-40%) of streptococcus isolation, so delayed prescribing of antibiotics is considered, with a 3-day ‘back-up prescription’. If the score is 4 or higher, there is a 62-65% chance of streptococcus isolation, and immediate antibiotic use is recommended if the infection is severe. Otherwise, a 48-hour short back-up prescription is suggested.
The Fever PAIN score was developed from a study that included 1760 adults and children aged three and over. It was then tested in a trial that compared three different prescribing strategies: empirical delayed prescribing, using the score to guide prescribing, and combining the score with the use of a near-patient test (NPT) for streptococcus. The use of the score resulted in faster symptom resolution and a reduction in antibiotic prescribing, both by one third. However, the addition of the NPT did not provide any additional benefit.
Overall, the FeverPAIN score is a useful tool for assessing acute sore throats and guiding antibiotic prescribing decisions. It has been shown to be effective in reducing unnecessary antibiotic use and improving patient outcomes.
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This question is part of the following fields:
- Ear, Nose & Throat
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Question 9
Correct
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A 65-year-old woman presents with right-sided weakness and difficulty speaking. Her ROSIER score is 3.
According to the current NICE guidelines, what is the maximum time frame from the start of symptoms within which thrombolysis can be administered?Your Answer: 4.5 hours
Explanation:Alteplase (rt-pA) is a recommended treatment for acute ischaemic stroke in adults if it is initiated within 4.5 hours of the onset of stroke symptoms. It is crucial to exclude intracranial haemorrhage through appropriate imaging techniques before starting the treatment. The initial dose of alteplase is 0.9 mg/kg, with a maximum of 90 mg. This dose is administered intravenously over a period of 60 minutes. The first 10% of the dose is given through intravenous injection, while the remaining amount is administered through intravenous infusion. For more information, please refer to the NICE guidelines on stroke and transient ischaemic attack in individuals aged 16 and above.
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This question is part of the following fields:
- Neurology
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Question 10
Correct
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A 12-year-old girl from an Irish Traveller community presents with a history of a persistent cough that has been present for the past two weeks. The cough occurs in short bursts with an inhalation followed by a series of hacking coughs. She has never received any immunizations.
What is the MOST suitable test to perform?Your Answer: Culture of nasopharyngeal aspirate
Explanation:This presentation strongly suggests a diagnosis of whooping cough, which is an infection of the upper respiratory tract caused by the bacteria Bordetella pertussis. The disease is highly contagious and is transmitted through respiratory droplets. The incubation period is typically 7-21 days, and it is estimated that about 90% of close household contacts will become infected.
The clinical course of whooping cough can be divided into two stages. The first stage, known as the catarrhal stage, is similar to a mild respiratory infection with symptoms such as low-grade fever and a runny nose. A cough may be present, but it is usually mild compared to the second stage. This phase typically lasts about a week.
The second stage, called the paroxysmal stage, is characterized by the development of a distinctive cough. The coughing occurs in spasms, often preceded by an inspiratory whoop sound. These spasms are followed by a series of rapid, hacking coughs. Patients may experience vomiting and may develop subconjunctival hemorrhages and petechiae. Between spasms, patients generally feel well and there are usually no abnormal chest findings. This stage can last up to 3 months, with a gradual recovery over this period. The later stages of this phase are sometimes referred to as the convalescent stage.
Complications of whooping cough can include secondary pneumonia, rib fractures, pneumothorax, hernias, syncopal episodes, encephalopathy, and seizures.
Public Health England (PHE) provides recommendations for testing for whooping cough based on the age of the patient, time since onset of illness, and severity of presentation. For infants under 12 months of age, hospitalised patients should undergo PCR testing, while non-hospitalised patients within two weeks of onset should be tested using culture of a nasopharyngeal swab or aspirate. Non-hospitalised patients presenting over two weeks after onset should be investigated with serology for anti-pertussis toxin IgG antibody levels.
For children over 12 months of age and adults, patients within two weeks of onset should be tested using culture of a nasopharyngeal swab or aspirate. Patients aged 5 to 16 who have not received the vaccine within the last year and present over two weeks after onset should have oral fluid testing for anti-pertussis toxin IgG antibody levels.
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This question is part of the following fields:
- Respiratory
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Question 11
Incorrect
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A 72 year old male attends the emergency department complaining of feeling lightheaded, experiencing shortness of breath, and having irregular heartbeats. He states that these symptoms started six hours ago. Upon listening to his chest, clear lung fields are detected but an irregularly irregular pulse is observed. The patient has type 2 diabetes, which is currently controlled through diet. The only medications he takes are:
- Lisinopril 2.5 mg once daily
- Simvastatin 20 mg once daily
There is no history of heart disease, vascular disease, or stroke. The recorded observations are as follows:
- Blood pressure: 148/92 mmHg
- Pulse rate: 86 bpm
- Respiration rate: 15 bpm
- Oxygen saturation: 97% on room air
An ECG is performed, confirming atrial fibrillation. As part of the management, you need to calculate the patient's CHA2DS2-VASc score.
What is this patient's score?Your Answer: 3
Correct Answer: 4
Explanation:The patient is currently taking 20 mg of Atorvastatin once daily. They do not have a history of heart disease, vascular disease, or stroke. Their blood pressure is 148/92 mmHg, pulse rate is 86 bpm, and respiration rate is 1.
Further Reading:
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, affecting around 5% of patients over the age of 70-75 years and 10% of patients aged 80-85 years. While AF can cause palpitations and inefficient cardiac function, the most important aspect of managing patients with AF is reducing the increased risk of stroke.
AF can be classified as first detected episode, paroxysmal, persistent, or permanent. First detected episode refers to the initial occurrence of AF, regardless of symptoms or duration. Paroxysmal AF occurs when a patient has 2 or more self-terminating episodes lasting less than 7 days. Persistent AF refers to episodes lasting more than 7 days that do not self-terminate. Permanent AF is continuous atrial fibrillation that cannot be cardioverted or if attempts to do so are deemed inappropriate. The treatment goals for permanent AF are rate control and anticoagulation if appropriate.
Symptoms of AF include palpitations, dyspnea, and chest pain. The most common sign is an irregularly irregular pulse. An electrocardiogram (ECG) is essential for diagnosing AF, as other conditions can also cause an irregular pulse.
Managing patients with AF involves two key parts: rate/rhythm control and reducing stroke risk. Rate control involves slowing down the irregular pulse to avoid negative effects on cardiac function. This is typically achieved using beta-blockers or rate-limiting calcium channel blockers. If one drug is not effective, combination therapy may be used. Rhythm control aims to restore and maintain normal sinus rhythm through pharmacological or electrical cardioversion. However, the majority of patients are managed with a rate control strategy.
Reducing stroke risk in patients with AF is crucial. Risk stratifying tools, such as the CHA2DS2-VASc score, are used to determine the most appropriate anticoagulation strategy. Anticoagulation is recommended for patients with a score of 2 or more. Clinicians can choose between warfarin and novel oral anticoagulants (NOACs) for anticoagulation.
Before starting anticoagulation, the patient’s bleeding risk should be assessed using tools like the HAS-BLED score or the ORBIT tool. These tools evaluate factors such as hypertension, abnormal renal or liver function, history of bleeding, age, and use of drugs that predispose to bleeding.
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This question is part of the following fields:
- Cardiology
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Question 12
Correct
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A 45-year-old man with a long history of type 2 diabetes mellitus presents with pain in his left buttock, hip, and thigh. The pain started suddenly a few weeks ago, and he cannot recall any previous injury. During the examination, he shows wasting of his left quadriceps, struggles to stand up from a seated position, and has an absent knee jerk on the left side. Muscle fasciculations are observed in his left thigh. His BMI is 30, and he is a smoker.
What is the SINGLE most beneficial management measure for this patient?Your Answer: Good glycaemic control
Explanation:Diabetic amyotrophy, also referred to as proximal diabetic neuropathy, is the second most prevalent form of diabetic neuropathy. It typically manifests with pain in the buttocks, hips, or thighs and is often initially experienced on one side of the body. The pain may start off as mild and gradually progress or it can suddenly appear, as seen in this particular case. Subsequently, weakness and wasting of the proximal muscles in the lower limbs occur, potentially leading to the patient requiring assistance when transitioning from a seated to a standing position. Reflexes in the affected areas can also be impacted. Fortunately, diabetic amyotrophy can be reversed through effective management of blood sugar levels, physiotherapy, and adopting a healthy lifestyle.
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This question is part of the following fields:
- Endocrinology
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Question 13
Correct
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A 42-year-old woman comes in with bleeding from a tooth socket that began slightly over 48 hours after a dental extraction. The bleeding is excessive, but her vital signs are currently stable.
What type of dental hemorrhage is present in this case?Your Answer: Secondary haemorrhage
Explanation:This patient is currently experiencing a secondary haemorrhage after undergoing a dental extraction. There are three different types of haemorrhage that can occur following a dental extraction. The first type is immediate haemorrhage, which happens during the extraction itself. The second type is reactionary haemorrhage, which typically occurs 2-3 hours after the extraction when the vasoconstrictor effects of the local anaesthetic wear off. Lastly, there is secondary haemorrhage, which usually happens at around 48-72 hours after the extraction and is a result of the clot becoming infected.
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This question is part of the following fields:
- Maxillofacial & Dental
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Question 14
Incorrect
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You are summoned to assist with a 72-year-old patient who is in the resuscitation bay and has experienced two defibrillation attempts following cardiac arrest. Unfortunately, there is no supply of amiodarone available, so your consultant instructs you to prepare lidocaine for administration after the next shock. What is the initial dosage of lidocaine to be given during cardiac arrest?
Your Answer: 5 mg/kg
Correct Answer: 1 mg/kg
Explanation:During cardiac arrest, Lidocaine is administered through a slow IV injection at an initial dose of 1 mg/kg when deemed suitable.
Further Reading:
In the management of respiratory and cardiac arrest, several drugs are commonly used to help restore normal function and improve outcomes. Adrenaline is a non-selective agonist of adrenergic receptors and is administered intravenously at a dose of 1 mg every 3-5 minutes. It works by causing vasoconstriction, increasing systemic vascular resistance (SVR), and improving cardiac output by increasing the force of heart contraction. Adrenaline also has bronchodilatory effects.
Amiodarone is another drug used in cardiac arrest situations. It blocks voltage-gated potassium channels, which prolongs repolarization and reduces myocardial excitability. The initial dose of amiodarone is 300 mg intravenously after 3 shocks, followed by a dose of 150 mg after 5 shocks.
Lidocaine is an alternative to amiodarone in cardiac arrest situations. It works by blocking sodium channels and decreasing heart rate. The recommended dose is 1 mg/kg by slow intravenous injection, with a repeat half of the initial dose after 5 minutes. The maximum total dose of lidocaine is 3 mg/kg.
Magnesium sulfate is used to reverse myocardial hyperexcitability associated with hypomagnesemia. It is administered intravenously at a dose of 2 g over 10-15 minutes. An additional dose may be given if necessary, but the maximum total dose should not exceed 3 g.
Atropine is an antagonist of muscarinic acetylcholine receptors and is used to counteract the slowing of heart rate caused by the parasympathetic nervous system. It is administered intravenously at a dose of 500 mcg every 3-5 minutes, with a maximum dose of 3 mg.
Naloxone is a competitive antagonist for opioid receptors and is used in cases of respiratory arrest caused by opioid overdose. It has a short duration of action, so careful monitoring is necessary. The initial dose of naloxone is 400 micrograms, followed by 800 mcg after 1 minute. The dose can be gradually escalated up to 2 mg per dose if there is no response to the preceding dose.
It is important for healthcare professionals to have knowledge of the pharmacology and dosing schedules of these drugs in order to effectively manage respiratory and cardiac arrest situations.
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This question is part of the following fields:
- Basic Anaesthetics
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Question 15
Correct
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A 72 year old male presents to the emergency department following a fall onto an outstretched hand. Following assessment you order an X-ray of the wrist which confirms a dorsally angulated extra-articular fracture of the right distal radius. You also observe cortical thinning and increased radiolucency of the bone and consider the possibility of underlying osteoporosis. What is a risk factor for osteoporosis?
Your Answer: Menopause
Explanation:Osteoporosis and fragility fractures are more likely to occur in individuals with low levels of estrogen. Menopause, which causes a decrease in estrogen, can lead to estrogen deficiency. Estrogen plays a role in preventing bone breakdown by inhibiting osteoclast activity. After menopause, there is an increase in osteoclast activity, resulting in a rapid decline in bone mineral density. Osteoporosis is also associated with the long-term use of corticosteroids.
Further Reading:
Fragility fractures are fractures that occur following a fall from standing height or less, and may be atraumatic. They often occur in the presence of osteoporosis, a disease characterized by low bone mass and structural deterioration of bone tissue. Fragility fractures commonly affect the wrist, spine, hip, and arm.
Osteoporosis is defined as a bone mineral density (BMD) of 2.5 standard deviations below the mean peak mass, as measured by dual-energy X-ray absorptiometry (DXA). Osteopenia, on the other hand, refers to low bone mass between normal bone mass and osteoporosis, with a T-score between -1 to -2.5.
The pathophysiology of osteoporosis involves increased osteoclast activity relative to bone production by osteoblasts. The prevalence of osteoporosis increases with age, from approximately 2% at 50 years to almost 50% at 80 years.
There are various risk factors for fragility fractures, including endocrine diseases, GI causes of malabsorption, chronic kidney and liver diseases, menopause, immobility, low body mass index, advancing age, oral corticosteroids, smoking, alcohol consumption, previous fragility fractures, rheumatological conditions, parental history of hip fracture, certain medications, visual impairment, neuromuscular weakness, cognitive impairment, and unsafe home environment.
Assessment of a patient with a possible fragility fracture should include evaluating the risk of further falls, the risk of osteoporosis, excluding secondary causes of osteoporosis, and ruling out non-osteoporotic causes for fragility fractures such as metastatic bone disease, multiple myeloma, osteomalacia, and Paget’s disease.
Management of fragility fractures involves initial management by the emergency clinician, while treatment of low bone density is often delegated to the medical team or general practitioner. Management considerations include determining who needs formal risk assessment, who needs a DXA scan to measure BMD, providing lifestyle advice, and deciding who requires drug treatment.
Medication for osteoporosis typically includes vitamin D, calcium, and bisphosphonates. Vitamin D and calcium supplementation should be considered based on individual needs, while bisphosphonates are advised for postmenopausal women and men over 50 years with confirmed osteoporosis or those taking high doses of oral corticosteroids.
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This question is part of the following fields:
- Endocrinology
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Question 16
Incorrect
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A 68-year-old patient with advanced metastatic bowel cancer is experiencing symptoms of bowel obstruction and is currently suffering from nausea and vomiting. The patient has been informed that they have only a few days left to live. Upon examination, the patient's abdomen is tender and distended. Over the past 24 hours, the patient has been taking hyoscine butylbromide in an attempt to alleviate their symptoms, but there has been no improvement.
What is the most appropriate course of treatment to manage the patient's nausea and vomiting in this situation?Your Answer: Prochlorperazine
Correct Answer: Octreotide
Explanation:NICE recommends the use of octreotide for individuals in the final stages of life who are experiencing obstructive bowel disorders and have nausea or vomiting that does not improve within 24 hours of starting treatment with hyoscine butylbromide.
When managing nausea and vomiting in individuals nearing the end of life, it is important to assess the likely causes, such as certain medications, recent chemotherapy or radiotherapy, psychological factors, biochemical imbalances, raised intracranial pressure, gastrointestinal motility disorders, ileus, or bowel obstruction.
It is crucial to have discussions with the person who is dying and their loved ones about the available options for treating nausea and vomiting. Non-pharmacological methods should be considered as well.
When selecting medications to manage these symptoms, factors to consider include the likely cause and its reversibility, potential side effects (including sedation), other symptoms the person may be experiencing, the desired balance of effects when managing other symptoms, and compatibility and drug interactions with other medications the person is taking.
For individuals with obstructive bowel disorders who have nausea or vomiting, hyoscine butylbromide is recommended as the first-line pharmacological treatment. If symptoms do not improve within 24 hours of starting this treatment, octreotide should be considered.
For more information, please refer to the NICE guidance on the care of dying adults in the last days of life. https://www.nice.org.uk/guidance/ng31
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This question is part of the following fields:
- Palliative & End Of Life Care
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Question 17
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A 42-year-old woman with a long history of anxiety presents having taken a deliberate overdose of the medication she takes for a thyroid condition. She informs you that the medication she takes for this condition is levothyroxine 100 mcg. She consumed the medication approximately 30 minutes ago but was promptly discovered by her husband, who quickly brought her to the Emergency Department.
Which of the following tests will be most beneficial initially?Your Answer: Arterial blood gas
Explanation:Calcium-channel blocker overdose is a serious condition that should always be taken seriously as it can be potentially life-threatening. The two most dangerous types of calcium channel blockers in overdose are verapamil and diltiazem. These medications work by binding to the alpha-1 subunit of L-type calcium channels, which prevents the entry of calcium into the cells. These channels play a crucial role in the functioning of cardiac myocytes, vascular smooth muscle cells, and islet beta-cells.
Significant toxicity can occur with the ingestion of more than 10 tablets of verapamil (160 mg or 240 mg immediate or sustained-release capsules) or diltiazem (180 mg, 240 mg or 360 mg immediate or sustained-release capsules). In children, even 1-2 tablets of immediate or sustained-release verapamil or diltiazem can be harmful. Symptoms usually appear within 1-2 hours of taking standard preparations, but with slow-release versions, the onset of severe toxicity may be delayed by 12-16 hours, with peak effects occurring after 24 hours.
The main clinical manifestations of calcium-channel blocker overdose include nausea and vomiting, low blood pressure, slow heart rate and first-degree heart block, heart muscle ischemia and stroke, kidney failure, pulmonary edema, and high blood sugar levels.
When managing a patient with calcium-channel blocker overdose, certain bedside investigations are crucial. These include checking blood glucose levels, performing an electrocardiogram (ECG), and obtaining an arterial blood gas sample. Additional investigations that can provide helpful information include assessing urea and electrolyte levels, conducting a chest X-ray to check for pulmonary edema, and performing an echocardiography.
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This question is part of the following fields:
- Pharmacology & Poisoning
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Question 18
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A 22-year-old patient arrives at the Emergency Department a few hours after being discharged from the day surgery unit following a tonsillectomy. The patient is experiencing bleeding in the surgical area, and you are having trouble controlling it. You urgently page the on-call ENT team.
Which of the following blood vessels is most likely causing the bleeding?Your Answer: External palatine vein
Explanation:Recurrent or chronic tonsillitis is a clear indication for tonsillectomy, which is the surgical removal of the palatine tonsils. One common complication of this procedure is bleeding, which occurs in approximately 0.5-2% of cases. The bleeding that occurs after tonsillectomy is typically venous in nature and most frequently originates from the external palatine vein. This vein drains the lateral tonsillar region and ultimately empties into the facial vein. Additionally, bleeding can also arise from the tonsillar branch of the facial artery, which supplies the inferior pole of the palatine tonsil.
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This question is part of the following fields:
- Ear, Nose & Throat
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Question 19
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A 5-year-old boy presents with a rash. He has been complaining of a sore throat and headaches. His mother noticed the rash on his tummy this morning, and his skin feels a little like sandpaper to touch. The rash blanches to the touch. He has had high temperatures and a flushed face too. You suspect scarlet fever and offer them antibiotics. When they leave the hospital, you remember that this is a notifiable disease and that you should inform the Consultant in Communicable Disease Control.
Within what time frame should you inform them about this case?Your Answer: Within 24 hours
Correct Answer: Within 72 hours
Explanation:If a case is not deemed urgent, it is necessary to inform the appropriate officer within a period of three days. However, if the case is suspected to be urgent, it is crucial to verbally notify the proper officer within a timeframe of 24 hours.
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This question is part of the following fields:
- Infectious Diseases
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Question 20
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A 6 week old female is brought into the emergency department by concerned new parents. They inform you that for the past couple of days, the baby has been vomiting forcefully after each feeding and is not urinating as frequently as usual. The parents are anxious as the baby was delivered via C-section at full term and is solely bottle fed. During the examination, you detect a lump in the upper abdomen.
What is the most probable diagnosis?Your Answer: Pyloric stenosis
Explanation:Pyloric stenosis is characterized by recurring episodes of projectile vomiting and the presence of a mass in the upper abdomen, often described as an olive. This patient exhibits clinical features that align with pyloric stenosis and possesses several common risk factors, including being a male, being the firstborn son, being bottle-fed, and being delivered via C-section. It is important to note that intestinal atresia is typically diagnosed either during pregnancy or shortly after birth.
Further Reading:
Pyloric stenosis is a condition that primarily affects infants, characterized by the thickening of the muscles in the pylorus, leading to obstruction of the gastric outlet. It typically presents between the 3rd and 12th weeks of life, with recurrent projectile vomiting being the main symptom. The condition is more common in males, with a positive family history and being first-born being additional risk factors. Bottle-fed children and those delivered by c-section are also more likely to develop pyloric stenosis.
Clinical features of pyloric stenosis include projectile vomiting, usually occurring about 30 minutes after a feed, as well as constipation and dehydration. A palpable mass in the upper abdomen, often described as like an olive, may also be present. The persistent vomiting can lead to electrolyte disturbances, such as hypochloremia, alkalosis, and mild hypokalemia.
Ultrasound is the preferred diagnostic tool for confirming pyloric stenosis. It can reveal specific criteria, including a pyloric muscle thickness greater than 3 mm, a pylorus longitudinal length greater than 15-17 mm, a pyloric volume greater than 1.5 cm3, and a pyloric transverse diameter greater than 13 mm.
The definitive treatment for pyloric stenosis is pyloromyotomy, a surgical procedure that involves making an incision in the thickened pyloric muscle to relieve the obstruction. Before surgery, it is important to correct any hypovolemia and electrolyte disturbances with intravenous fluids. Overall, pyloric stenosis is a relatively common condition in infants, but with prompt diagnosis and appropriate management, it can be effectively treated.
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This question is part of the following fields:
- Paediatric Emergencies
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