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Question 1
Incorrect
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As the foundation year doctor in general surgery, you are called to assess a patient who has suddenly become unresponsive at 4 am. The patient is a 45-year-old female who has been admitted for an elective cholecystectomy scheduled for 8 am.
Upon examination, the patient appears sweaty and clammy and is hypoventilating. She is only responsive to painful stimuli.
The patient's vital signs are as follows: heart rate of 115, blood pressure of 110/70 mmHg, respiratory rate of 8, oxygen saturation of 99%, and blood glucose level of 1.1.
What would be your next step in initiating drug therapy?Your Answer: Glucagon 1 mg IM
Correct Answer: Dextrose 20% 100 ml IV
Explanation:Hypoglycaemia: The Importance of Early Recognition and Management
Clinicians should always consider hypoglycaemia as a potential cause of acute unresponsiveness in patients. The diagnosis of hypoglycaemia is made when there is evidence of low blood sugar, associated symptoms, and resolution of symptoms with correction of hypoglycaemia. The management of hypoglycaemia should be prompt and involves administering 100 ml of 20% dextrose, as opposed to 50%, which can be too irritating to the veins. Repeat blood sugar measurements should be taken to ensure that levels remain above 3.0.
In patients who are fasting overnight for surgery, intravenous fluids should be prescribed with close monitoring of blood sugars to determine whether slow 5% dextrose is required to maintain an acceptable blood sugar level. Glucagon and Hypostop are alternative therapies used to increase glucose levels, but they are not rapid rescue drugs for the correction of low sugars in symptomatic patients.
To identify the cause of hypoglycaemia, the acronym EXPLAIN is used. This stands for Exogenous insulin administration, Pituitary insufficiency, Liver failure, Alcohol/Autoimmune/Addison’s, Insulinoma, and Neoplasia. All episodes of hypoglycaemia require an explanation, and further endocrine workup may be necessary if no cause is identified.
In conclusion, early recognition and management of hypoglycaemia is crucial in preventing further deterioration of the patient’s condition. Clinicians should always consider hypoglycaemia as a potential cause of acute unresponsiveness and promptly administer appropriate treatment.
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This question is part of the following fields:
- Emergency Medicine
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Question 2
Incorrect
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What EEG findings are typically observed in patients with hepatic encephalopathy?
Your Answer: Theta waves
Correct Answer: Delta waves
Explanation:EEG Changes in Hepatic Encephalopathy
Classic EEG changes that are commonly associated with hepatic encephalopathy include delta waves with high amplitude and low frequency, as well as triphasic waves. However, it is important to note that these findings are not specific to hepatic encephalopathy and may be present in other conditions as well. In cases where seizure activity needs to be ruled out, an EEG can be a useful tool in the initial evaluation of patients with cirrhosis and altered mental status. It is important to consider the limitations of EEG findings and to interpret them in conjunction with other clinical and laboratory data. Proper diagnosis and management of hepatic encephalopathy require a comprehensive approach that takes into account the underlying liver disease and any contributing factors.
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This question is part of the following fields:
- Emergency Medicine
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Question 3
Incorrect
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As the foundation year doctor on ward cover, you are asked to assess a 75-year-old male who was admitted to the cardiac care unit five hours ago due to chest pain. The patient has been given morphine, aspirin, clopidogrel, enoxaparin, and metoprolol. However, he has recently experienced a sudden worsening of chest pain, and his heart rate has dropped to 30 beats per minute. His other vital signs are BP 140/85 mmHg, O2 98%, and RR 18. An ECG has been conducted, revealing complete heart block. What is the most probable cause of this sudden development?
Your Answer: Anterior myocardial infarction
Correct Answer: Inferior myocardial infarction
Explanation:Managing Bradycardia in Patients with Myocardial Infarctions
Bradycardia is a serious medical emergency that requires immediate attention and should be managed according to the Resuscitation Council guidelines algorithm. Patients with myocardial infarctions are at a higher risk of developing associated arrhythmias, particularly those with inferior MIs, which can cause transient complete heart block due to the right coronary artery supplying the AV node. Although arrhythmogenic episodes are less common in other territory infarcts, they can still occur.
In this scenario, the patient has received ACS treatment, including morphine and a beta blocker, which should not cause a sustained or profound bradycardia at therapeutic dosages. However, it is important to check for iatrogenic errors, and drug charts should be closely inspected to identify any potential errors. If an overdose of morphine has occurred, naloxone should be administered urgently, while beta blocker overdoses may require large doses of glucagon to counteract their effects. Any drug errors should be documented on an incident report form as per local policy.
When managing bradycardia, the patient should be approached in an ABC fashion, and adverse features should be sought out. Four features that suggest decompensation include hypotension <90 systolic, loss of consciousness, chest pain, and shortness of breath. Atropine is the first-line drug, with aliquots of 500 mcg given up to 3 mg. Isoprenaline and adrenaline infusions are suggested as next-line treatments, but they may not be immediately available unless the patient is in a high dependency setting. Transcutaneous pacing should be readily available as an additional function on most defibrillator machines and is the next option if the patient continues to decompensate.
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This question is part of the following fields:
- Emergency Medicine
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Question 4
Incorrect
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A 56-year-old woman presents to the Emergency department complaining of neck pain. She was in a minor car accident three days ago where her car was hit from behind. Upon examination, there is no tenderness in the bones and she has a normal range of motion without neurological symptoms.
What is the best course of action in this situation?Your Answer:
Correct Answer: Reassure the patient and prescribe analgesia
Explanation:Soft Tissue Injuries to the Neck
Soft tissue injuries to the neck are a common occurrence, often resulting in delayed presentation to the emergency department as symptoms worsen over time. It is important to have a low threshold for immobilizing the cervical spine and obtaining x-rays if there is cervical spine tenderness, reduced range of movement, or any neurological signs. Non-steroidal anti-inflammatory preparations are the preferred method of analgesia for these patients. Collars are not recommended as early mobilization is the best treatment. Patients should be advised to see their GP for review and appropriate physiotherapy can be arranged if symptoms persist.
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This question is part of the following fields:
- Emergency Medicine
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Question 5
Incorrect
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A 70-year-old patient with type 2 diabetes and stable ischaemic heart disease presents with palpitations lasting for 4 days. The patient is currently taking metformin 500 mg tds, aspirin 75 mg daily, ramipril 2.5 mg daily, and simvastatin 40 mg daily. Upon examination, the patient's pulse rate is 140/minute and blood pressure is 128/98 mmHg. There is no chest pain or evidence of acute heart failure, but the ECG confirms atrial fibrillation. What is the most appropriate treatment for managing the patient's atrial fibrillation?
Your Answer:
Correct Answer: Oral bisoprolol
Explanation:Management of Acute Onset Symptomatic Atrial Fibrillation
In cases of acute onset symptomatic atrial fibrillation (AF), the most appropriate chemical agent for rate control is beta blockers. However, if the patient has ischaemic heart disease, rate control is the initial management strategy. If beta blockers are contraindicated, rate-limiting calcium channel blockers can be used instead. In the event that the patient is hypotensive, IV digoxin is the preferred rate control medication. If the patient cannot tolerate beta blockers, calcium channel blockers, or digoxin, amiodarone is given.
Long-term anticoagulation is necessary after an appropriate risk assessment. Chemical cardioversion can be performed with amiodarone or flecainide, but the latter is contraindicated in patients with ischaemic heart disease. Although AF is generally well tolerated, patients with haemodynamic instability that is considered life-threatening require DC cardioversion. If there is a delay in DC cardioversion, amiodarone is recommended.
Overall, the management of acute onset symptomatic AF involves careful consideration of the patient’s medical history and current condition to determine the most appropriate treatment strategy.
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This question is part of the following fields:
- Emergency Medicine
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Question 6
Incorrect
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According to the Glasgow coma scale (GCS), what does a verbal score of 1 indicate?
Your Answer:
Correct Answer: No response
Explanation:The Glasgow coma scale is a scoring system used to assess the level of consciousness of a patient. It ranges from 3 to 15, with 3 being the worst and 15 being the best. The scale is made up of three parameters: best eye response, best verbal response, and best motor response.
The best eye response is determined by how the patient reacts to visual stimuli, such as opening their eyes spontaneously or in response to a command. The best verbal response is graded on a scale of 1 to 5, with 1 being no response and 5 being an oriented patient who can answer questions appropriately. Finally, the best motor response is assessed by observing the patient’s movements, such as their ability to follow commands or move in response to pain.
Overall, the Glasgow coma scale is an important tool for healthcare professionals to assess the level of consciousness of a patient and determine the severity of their condition. By the different parameters and scores, medical professionals can provide appropriate treatment and care for their patients.
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This question is part of the following fields:
- Emergency Medicine
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Question 7
Incorrect
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A 16-year-old girl weighing approximately 70 kg is brought to the Emergency department in cardiac arrest. She was found collapsed at home surrounded by empty packets of amitriptyline 25 mg. The ambulance service reports that she had a weak pulse and no respiratory effort. She has been intubated and is being ventilated by bag-valve mask. The presenting rhythm is a sinusoidal supraventricular tachycardia with wide QRS complexes. Blood pressure is barely recordable but a weak carotid and femoral pulse are palpable.
Immediate arterial bloods gases are obtained and reveal an arterial pH of 6.99 (7.35-7.45), pO2 of 11.8 kPa (11.0-14.0), pCO2 of 5.9 kPa (4.5-6.0), HCO3- of 9.6 mmol/L (16-22), base excess of −19.7 mmol/L (-2 to +2), lactate of 7.4 mmol/L (0.5-2.0), potassium of 4.9 mmol/L (3.3-5.5), and glucose of 4.8 mmol/L (5.0-7.0).
What is the most appropriate next step?Your Answer:
Correct Answer: Administer IV bicarbonate 8.4% 50 ml through a large bore cannula
Explanation:Amitriptyline is a cheap and effective tricyclic antidepressant drug that is highly toxic in overdose and often lethal. Symptoms of overdose include tachycardia, hot dry skin, dilated pupils, and cardiac failure. Rapid correction of severe acidosis with intravenous 8.4% sodium bicarbonate solution is recommended, even in the absence of significant acidosis. Glucagon is given in tricyclic overdoses when the patient develops cardiac failure or profound hypotension refractory to fluids. Resuscitation attempts should continue for at least 60 minutes in the absence of significant comorbidity. Intralipid is a second line agent used to stabilize the myocardium in instances where bicarbonate has been ineffective or cardiac arrhythmias persist despite adequate alkalinisation of the blood.
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This question is part of the following fields:
- Emergency Medicine
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Question 8
Incorrect
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A 22-year-old woman is discovered by her roommates in a confused, drowsy, and sweaty state in her bedroom. She is unable to provide a clear medical history. Upon examination, she has a fever of 38.3°C, a heart rate of 110 bpm, a blood pressure of 110/60 mmHg, and appears to be short of breath with a respiratory rate of 30. There is no stiffness in her neck, and her chest sounds clear upon auscultation. An arterial blood gas test taken with 15 l/min oxygen shows a pH of 7.29 (7.35-7.45), Pa O2 of 37 kPa (11-14), PaCO2 of 2.1 kPa (4.5-6), and lactate of 2.4 mmol/L (0.1-2.5). What is the most probable diagnosis?
Your Answer:
Correct Answer: Aspirin overdose
Explanation:Signs of Aspirin Toxicity
Aspirin toxicity can be identified through several symptoms such as fever, sweating, tachypnoea, and acidosis. These signs indicate that the body is experiencing an overdose of aspirin. The presence of confusion is a clear indication of severe overdose. On the other hand, hypoxia is expected in severe asthma and Legionella pneumonia.
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This question is part of the following fields:
- Emergency Medicine
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Question 9
Incorrect
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A 78-year-old male is brought to the Emergency department by ambulance after experiencing a cardiac arrest. The ambulance crew is currently performing resuscitation attempts. Upon arrival, the patient has been intubated and connected to a defibrillator monitor, which shows a slow sinus rhythm (pulseless electrical activity) at a rate of 30 complexes per minute. The patient has been administered the full drugs protocol in accordance with the latest Adult Advanced Life Support guidelines. What do these guidelines recommend regarding the use of adrenaline during cardiac arrest?
Your Answer:
Correct Answer: Adrenaline 1 mg should be given immediately and then two cycles whilst in this rhythm
Explanation:Adrenaline is an integral part of Advanced Life Support attempts during cardiac arrest, with a recommended dose of 1 mg given immediately and then after every 2 cycles. However, there is increasing evidence that the use of adrenaline during resuscitation attempts may be detrimental to a patient’s chance of survival. Atropine, a drug used in bradycardia, was removed from the algorithm for Advanced Life Support in 2010 as there was little evidence it had any effect in cardiac arrest situations.
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This question is part of the following fields:
- Emergency Medicine
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Question 10
Incorrect
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A 27-year-old male with a history of alcohol dependence and chronic hepatitis presents with reduced consciousness. He was discovered at home by a friend who reported that he had been depressed and threatening suicide.
Upon examination, the patient is found to be tachycardic and hypotensive, with a blood pressure of 90/60 mmHg. His Glasgow coma scale is 13/15, and there are no signs of jaundice or hepatomegaly. A plasma-paracetamol concentration of 70 mg/litre is detected.
What is the most appropriate course of action for this patient?Your Answer:
Correct Answer: IV acetylcysteine
Explanation:Treatment for Paracetamol Overdose
This patient may have taken too much paracetamol, but it is unclear when this occurred. The paracetamol level in their blood is 70 mg/litre, which is difficult to interpret without knowing the timing of the overdose. If there is any doubt about the timing or need for treatment, the patient should receive N-acetylcysteine. In remote areas where this is not available, oral methionine can be used instead. Gastric lavage, which involves washing out the stomach, is not typically helpful for patients who have only overdosed on paracetamol. Overall, prompt treatment is essential to prevent serious liver damage and other complications.
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This question is part of the following fields:
- Emergency Medicine
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