This patient has come in with worsening shortness of breath and coughing up blood. They have a long history of smoking, and the likely diagnosis is superior vena cava obstruction caused by a primary bronchial tumor.

The typical symptoms of superior vena cava obstruction include breathlessness, chest pain, swelling in the neck, face, and arms, dilated veins and telangiectasia on the arms, neck, and chest wall, facial flushing, stridor due to laryngeal edema, and cyanosis.

Given the severity of the symptoms, this man needs to be urgently referred and admitted to the hospital. To provide immediate relief, his head should be elevated and he should be given supplemental oxygen. Corticosteroids and diuretics may also be administered. Further investigation through CT scanning is necessary, and radiotherapy may be recommended as a treatment option.

For patients suspected of having acute coronary syndromes (ACS), it is recommended that they receive 300 mg of aspirin and pain relief in the form of glyceryl trinitrate (GTN) with the option of intravenous opioids such as morphine. However, if the patient is pain-free after taking GTN, there is no need to administer morphine. The next steps in medical management or intervention will be determined once the diagnosis is confirmed.

Further Reading:

Acute Coronary Syndromes (ACS) is a term used to describe a group of conditions that involve the sudden reduction or blockage of blood flow to the heart. This can lead to a heart attack or unstable angina. ACS includes ST segment elevation myocardial infarction (STEMI), non-ST segment elevation myocardial infarction (NSTEMI), and unstable angina (UA).

The development of ACS is usually seen in patients who already have underlying coronary heart disease. This disease is characterized by the buildup of fatty plaques in the walls of the coronary arteries, which can gradually narrow the arteries and reduce blood flow to the heart. This can cause chest pain, known as angina, during physical exertion. In some cases, the fatty plaques can rupture, leading to a complete blockage of the artery and a heart attack.

There are both non modifiable and modifiable risk factors for ACS. non modifiable risk factors include increasing age, male gender, and family history. Modifiable risk factors include smoking, diabetes mellitus, hypertension, hypercholesterolemia, and obesity.

The symptoms of ACS typically include chest pain, which is often described as a heavy or constricting sensation in the central or left side of the chest. The pain may also radiate to the jaw or left arm. Other symptoms can include shortness of breath, sweating, and nausea/vomiting. However, it’s important to note that some patients, especially diabetics or the elderly, may not experience chest pain.

The diagnosis of ACS is typically made based on the patient’s history, electrocardiogram (ECG), and blood tests for cardiac enzymes, specifically troponin. The ECG can show changes consistent with a heart attack, such as ST segment elevation or depression, T wave inversion, or the presence of a new left bundle branch block. Elevated troponin levels confirm the diagnosis of a heart attack.

The management of ACS depends on the specific condition and the patient’s risk factors. For STEMI, immediate coronary reperfusion therapy, either through primary percutaneous coronary intervention (PCI) or fibrinolysis, is recommended. In addition to aspirin, a second antiplatelet agent is usually given. For NSTEMI or unstable angina, the treatment approach may involve reperfusion therapy or medical management, depending on the patient’s risk of future cardiovascular events.

Stevens-Johnson syndrome is a severe and potentially deadly form of erythema multiforme. It can be triggered by anything that causes erythema multiforme, but it is most commonly seen as a reaction to medication within 1-3 weeks of starting treatment. Initially, there may be symptoms like fever, fatigue, joint pain, and digestive issues, followed by the development of severe mucocutaneous lesions that are blistering and ulcerating.

Stevens-Johnson syndrome and toxic epidermal necrolysis are considered to be different stages of the same mucocutaneous disease, with toxic epidermal necrolysis being more severe. The extent of epidermal detachment is used to differentiate between the two. In Stevens-Johnson syndrome, less than 10% of the body surface area is affected by epidermal detachment, while in toxic epidermal necrolysis, it is greater than 30%. An overlap syndrome occurs when detachment affects between 10-30% of the body surface area.

Several drugs can potentially cause Stevens-Johnson syndrome and toxic epidermal necrolysis, including tetracyclines, penicillins, vancomycin, sulphonamides, NSAIDs, and barbiturates.

Public Health England advises that children with impetigo should not attend school, nursery, or be under the care of childminders until the sores have formed a crust or until 48 hours after starting antibiotic treatment. Antibiotics help accelerate the healing process and decrease the period of contagiousness.

For more information, please refer to the Guidance on Infection Control in Schools and other Childcare Settings.
https://www.publichealth.hscni.net/sites/default/files/Guidance_on_infection_control_in%20schools_poster.pdf

This situation is potentially complicated and involves another family member. The patient currently lives alone and based on the given history, it seems to be a mild episode of epistaxis. Without any additional information, it would be reasonable to assume that the patient can continue living in his current conditions.

It is crucial to listen to the family’s concerns. However, it is important to keep the patient as the main focus. Out of the options provided, the most sensible approach would be to have a conversation with the patient regarding his son’s concerns and understand his perspective on those concerns.

Hypothermia occurs when the core body temperature drops below 35°C. It is categorized as mild (32-35°C), moderate (28-32°C), or severe (<28°C). Rescuers at the scene can use the Swiss staging system to describe the condition of victims. The stages range from clearly conscious and shivering to unconscious and not breathing, with death due to irreversible hypothermia being the most severe stage. There are several risk factors for hypothermia, including environmental exposure, unsatisfactory housing, poverty, lack of cold awareness, drugs, alcohol, acute confusion, hypothyroidism, and sepsis. The clinical features of hypothermia vary depending on the severity. At 32-35°C, symptoms may include apathy, amnesia, ataxia, and dysarthria. At 30-32°C, there may be a decreased level of consciousness, hypotension, arrhythmias, respiratory depression, and muscular rigidity. Below 30°C, ventricular fibrillation may occur, especially with excessive movement or invasive procedures. Diagnosing hypothermia involves checking the core temperature using an oesophageal, rectal, or tympanic probe with a low reading thermometer. Rectal and tympanic temperatures may lag behind core temperature and are unreliable in hypothermia. Various investigations should be carried out, including blood tests, blood glucose, amylase, blood cultures, arterial blood gas, ECG, chest X-ray, and CT head if there is suspicion of head injury or CVA. The management of hypothermia involves supporting the ABCs, treating the patient in a warm room, removing wet clothes and drying the skin, monitoring the ECG, providing warmed, humidified oxygen, correcting hypoglycemia with IV glucose, and handling the patient gently to avoid VF arrest. Rewarming methods include passive Rewarming with warm blankets or Bair hugger/polythene sheets, surface Rewarming with a water bath, core Rewarming with heated, humidified oxygen or peritoneal lavage, and extracorporeal Rewarming via cardiopulmonary bypass for severe hypothermia/cardiac arrest. In the case of hypothermic cardiac arrest, CPR should be performed with chest compressions and ventilations at standard rates.

This child has a past medical history consistent with acute purulent otitis media on the left side. The sudden improvement and discharge of pus from the ear strongly suggest a perforated tympanic membrane. It is not uncommon to be unable to see the tympanic membrane in these situations.

Initially, it is best to adopt a watchful waiting approach to tympanic membrane perforation. Spontaneous healing occurs in over 90% of patients, so only persistent cases should be referred for myringoplasty. There is no need for an urgent same-day referral in this case.

The use of topical corticosteroids and gentamicin is not recommended when there is a tympanic membrane perforation.

Anaphylaxis is a severe allergic reaction that is caused by the immune system overreaction to a specific allergen. This reaction is classified as a Type I hypersensitivity reaction, which means it is mediated by the IgE antibodies.

Further Reading:

Anaphylaxis is a severe and life-threatening hypersensitivity reaction that can have sudden onset and progression. It is characterized by skin or mucosal changes and can lead to life-threatening airway, breathing, or circulatory problems. Anaphylaxis can be allergic or non-allergic in nature.

In allergic anaphylaxis, there is an immediate hypersensitivity reaction where an antigen stimulates the production of IgE antibodies. These antibodies bind to mast cells and basophils. Upon re-exposure to the antigen, the IgE-covered cells release histamine and other inflammatory mediators, causing smooth muscle contraction and vasodilation.

Non-allergic anaphylaxis occurs when mast cells degrade due to a non-immune mediator. The clinical outcome is the same as in allergic anaphylaxis.

The management of anaphylaxis is the same regardless of the cause. Adrenaline is the most important drug and should be administered as soon as possible. The recommended doses for adrenaline vary based on age. Other treatments include high flow oxygen and an IV fluid challenge. Corticosteroids and chlorpheniramine are no longer recommended, while non-sedating antihistamines may be considered as third-line treatment after initial stabilization of airway, breathing, and circulation.

Common causes of anaphylaxis include food (such as nuts, which is the most common cause in children), drugs, and venom (such as wasp stings). Sometimes it can be challenging to determine if a patient had a true episode of anaphylaxis. In such cases, serum tryptase levels may be measured, as they remain elevated for up to 12 hours following an acute episode of anaphylaxis.

The Resuscitation Council (UK) provides guidelines for the management of anaphylaxis, including a visual algorithm that outlines the recommended steps for treatment.
https://www.resus.org.uk/sites/default/files/2021-05/Emergency%20Treatment%20of%20Anaphylaxis%20May%202021_0.pdf

The key components of first aid for snake bites in the UK involve immobilizing the patient and the affected limb, as well as administering paracetamol for pain relief. When it comes to venomous snake bites, it is important to immobilize the limb using a splint or sling, but not to use a tourniquet or pressure bandage for adder bites. In certain areas, such as NSW, Australia, where venomous snakes can cause rapidly progressing and life-threatening paralysis, pressure bandage immobilization is recommended. However, this is not the case in the UK. Anti-venom is not always necessary for adder bites, and its administration should be based on a thorough assessment of the patient’s condition and the presence of appropriate indications. Paracetamol is the preferred choice for pain relief in UK snake bites, as aspirin and ibuprofen can worsen bleeding tendencies that may result from adder bites. Similarly, heparin should be avoided for the same reason.

Further Reading:

Snake bites in the UK are primarily caused by the adder, which is the only venomous snake species native to the country. While most adder bites result in minor symptoms such as pain, swelling, and inflammation, there have been cases of life-threatening illness and fatalities. Additionally, there are instances where venomous snakes that are kept legally or illegally also cause bites in the UK.

Adder bites typically occur from early spring to late autumn, with the hand being the most common site of the bite. Symptoms can be local or systemic, with local symptoms including sharp pain, tingling or numbness, and swelling that spreads proximally. Systemic symptoms may include spreading pain, tenderness, inflammation, regional lymph node enlargement, and bruising. In severe cases, anaphylaxis can occur, leading to symptoms such as nausea, vomiting, abdominal pain, diarrhea, and shock.

It is important for clinicians to be aware of the potential complications and complications associated with adder bites. These can include acute renal failure, pulmonary and cerebral edema, acute gastric dilatation, paralytic ileus, acute pancreatitis, and coma and seizures. Anaphylaxis symptoms can appear within minutes or be delayed for hours, and hypotension is a critical sign to monitor.

Initial investigations for adder bites include blood tests, ECG, and vital sign monitoring. Further investigations such as chest X-ray may be necessary based on clinical signs. Blood tests may reveal abnormalities such as leukocytosis, raised hematocrit, anemia, thrombocytopenia, and abnormal clotting profile. ECG changes may include tachyarrhythmias, bradyarrhythmias, atrial fibrillation, and ST segment changes.

First aid measures at the scene include immobilizing the patient and the bitten limb, avoiding aspirin and ibuprofen, and cleaning the wound site in the hospital. Tetanus prophylaxis should be considered. In cases of anaphylaxis, prompt administration of IM adrenaline is necessary. In the hospital, rapid assessment and appropriate resuscitation with intravenous fluids are required.

Antivenom may be indicated in cases of hypotension, systemic envenoming, ECG abnormalities, peripheral neutrophil leucocytosis, elevated serum creatine kinase or metabolic acidosis, and extensive or rapidly spreading local swelling. Zagreb antivenom is commonly used in the UK, with an initial dose of 8 mL.

Epistaxis, or nosebleed, is a common condition that can occur in both children and older adults. It is classified as either anterior or posterior, depending on the location of the bleeding. Anterior epistaxis usually occurs in younger individuals and arises from the nostril, most commonly from an area called Little’s area. These bleeds are usually not severe and account for the majority of nosebleeds seen in hospitals. Posterior nosebleeds, on the other hand, occur in older patients with conditions such as hypertension and atherosclerosis. The bleeding in posterior nosebleeds is likely to come from both nostrils and originates from the superior or posterior parts of the nasal cavity or nasopharynx.

The management of epistaxis involves assessing the patient for signs of instability and implementing measures to control the bleeding. Initial measures include sitting the patient upright with their upper body tilted forward and their mouth open. Firmly pinching the cartilaginous part of the nose for 10-15 minutes without releasing the pressure can also help stop the bleeding. If these measures are successful, a cream called Naseptin or mupirocin nasal ointment can be prescribed for further treatment.

If bleeding persists after the initial measures, nasal cautery or nasal packing may be necessary. Nasal cautery involves using a silver nitrate stick to cauterize the bleeding point, while nasal packing involves inserting nasal tampons or inflatable nasal packs to stop the bleeding. In cases of posterior bleeding, posterior nasal packing or surgery to tie off the bleeding vessel may be considered.

Complications of epistaxis can include nasal bleeding, hypovolemia, anemia, aspiration, and even death. Complications specific to nasal packing include sinusitis, septal hematoma or abscess, pressure necrosis, toxic shock syndrome, and apneic episodes. Nasal cautery can lead to complications such as septal perforation and caustic injury to the surrounding skin.

In children under the age of 2 presenting with epistaxis, it is important to refer them for further investigation as an underlying cause is more likely in this age group.

Propofol often leads to hypotension as a common side effect. Other common side effects of Propofol include apnoea, arrhythmias, headache, and nausea with vomiting.

Further Reading:

Procedural sedation is commonly used by emergency department (ED) doctors to minimize pain and discomfort during procedures that may be painful or distressing for patients. Effective procedural sedation requires the administration of analgesia, anxiolysis, sedation, and amnesia. This is typically achieved through the use of a combination of short-acting analgesics and sedatives.

There are different levels of sedation, ranging from minimal sedation (anxiolysis) to general anesthesia. It is important for clinicians to understand the level of sedation being used and to be able to manage any unintended deeper levels of sedation that may occur. Deeper levels of sedation are similar to general anesthesia and require the same level of care and monitoring.

Various drugs can be used for procedural sedation, including propofol, midazolam, ketamine, and fentanyl. Each of these drugs has its own mechanism of action and side effects. Propofol is commonly used for sedation, amnesia, and induction and maintenance of general anesthesia. Midazolam is a benzodiazepine that enhances the effect of GABA on the GABA A receptors. Ketamine is an NMDA receptor antagonist and is used for dissociative sedation. Fentanyl is a highly potent opioid used for analgesia and sedation.

The doses of these drugs for procedural sedation in the ED vary depending on the drug and the route of administration. It is important for clinicians to be familiar with the appropriate doses and onset and peak effect times for each drug.

Safe sedation requires certain requirements, including appropriate staffing levels, competencies of the sedating practitioner, location and facilities, and monitoring. The level of sedation being used determines the specific requirements for safe sedation.

After the procedure, patients should be monitored until they meet the criteria for safe discharge. This includes returning to their baseline level of consciousness, having vital signs within normal limits, and not experiencing compromised respiratory status. Pain and discomfort should also be addressed before discharge.

The two-level PE Wells score has been simplified to determine the likelihood of a pulmonary embolism (PE) into two outcomes: likely or unlikely. A score of over 4 indicates that a PE is likely, while a score of 4 points or less indicates that a PE is unlikely.

The allocation of points is as follows:

– Clinical symptoms and signs of deep vein thrombosis (DVT) = 3 points
– An alternative diagnosis that is less likely than a PE = 3 points
– Heart rate greater than 100 = 1.5 points
– Immobilization for more than 3 days or recent surgery within 4 weeks = 1.5 points
– Previous history of DVT or PE = 1.5 points
– Presence of haemoptysis = 1 point
– Malignancy (currently on treatment, treated in the last 6 months, or palliative care) = 1 point.

This patient is displaying symptoms and signs that are consistent with a diagnosis of acute pyelonephritis. Additionally, they are showing signs of sepsis, which indicates a more serious illness or condition. Therefore, it would be advisable to admit the patient for inpatient treatment.

According to the recommendations from the National Institute for Health and Care Excellence (NICE), patients with pyelonephritis should be admitted if it is severe or if they exhibit any signs or symptoms that suggest a more serious condition, such as sepsis. Signs of sepsis include significant tachycardia, hypotension, or breathlessness, as well as marked signs of illness like impaired level of consciousness, profuse sweating, rigors, pallor, or significantly reduced mobility. A temperature greater than 38°C or less than 36°C is also indicative of sepsis.

NICE also advises considering referral or seeking specialist advice for individuals with acute pyelonephritis if they are significantly dehydrated or unable to take oral fluids and medicines, if they are pregnant, if they have a higher risk of developing complications due to known or suspected abnormalities of the genitourinary tract or underlying diseases like diabetes mellitus or immunosuppression, or if they have recurrent episodes of urinary tract infections (UTIs).

For non-pregnant women and men, the recommended choice of antibacterial therapy is as follows: oral first-line options include cefalexin, ciprofloxacin, or co-amoxiclav (taking into account local microbial resistance data), and trimethoprim if sensitivity is known. Intravenous first-line options are amikacin, ceftriaxone, cefuroxime, ciprofloxacin, or gentamicin if the patient is severely unwell or unable to take oral treatment. Co-amoxiclav may be used if given in combination or if sensitivity is known. Antibacterials may be combined if there are concerns about susceptibility or sepsis. For intravenous second-line options, it is recommended to consult a local microbiologist.

For pregnant women, the recommended choice of antibacterial therapy is cefalexin for oral first-line treatment. If the patient is severely unwell or unable to take oral treatment, cefuroxime is the recommended intravenous first-line option.

When a patient is semi-conscious, it is less likely for the nasopharyngeal airway adjuncts (NPA’s) to trigger the gag reflex compared to oropharyngeal airways. Therefore, NPA’s are typically the preferred option in these cases.

Further Reading:

Techniques to keep the airway open:

1. Suction: Used to remove obstructing material such as blood, vomit, secretions, and food debris from the oral cavity.

2. Chin lift manoeuvres: Involves lifting the head off the floor and lifting the chin to extend the head in relation to the neck. Improves alignment of the pharyngeal, laryngeal, and oral axes.

3. Jaw thrust: Used in trauma patients with cervical spine injury concerns. Fingers are placed under the mandible and gently pushed upward.

Airway adjuncts:

1. Oropharyngeal airway (OPA): Prevents the tongue from occluding the airway. Sized according to the patient by measuring from the incisor teeth to the angle of the mandible. Inserted with the tip facing backwards and rotated 180 degrees once it touches the back of the palate or oropharynx.

2. Nasopharyngeal airway (NPA): Useful when it is difficult to open the mouth or in semi-conscious patients. Sized by length (distance between nostril and tragus of the ear) and diameter (roughly that of the patient’s little finger). Contraindicated in basal skull and midface fractures.

Laryngeal mask airway (LMA):

– Supraglottic airway device used as a first line or rescue airway.
– Easy to insert, sized according to patient’s bodyweight.
– Advantages: Easy insertion, effective ventilation, some protection from aspiration.
– Disadvantages: Risk of hypoventilation, greater gastric inflation than endotracheal tube (ETT), risk of aspiration and laryngospasm.

Note: Proper training and assessment of the patient’s condition are essential for airway management.

Erb’s palsy, also known as Erb-Duchenne palsy, is a condition where the arm becomes paralyzed due to an injury to the upper roots of the brachial plexus. The primary root affected is usually C5, although C6 may also be involved in some cases. The main cause of Erb’s palsy is when the arm experiences excessive force during a difficult childbirth, but it can also occur in adults as a result of shoulder trauma.

Clinically, the affected arm will hang by the side with the elbow extended and the forearm turned inward (known as the waiter’s tip sign). Upon examination, there will be a loss of certain movements:

– Shoulder abduction (involving the deltoid and supraspinatus muscles)
– Shoulder external rotation (infraspinatus muscle)
– Elbow flexion (biceps and brachialis muscles)

It is important to differentiate Erb’s palsy from Klumpke’s palsy, which affects the lower roots of the brachial plexus (C8 and T1). Klumpke’s palsy presents with a claw hand due to paralysis of the intrinsic hand muscles, along with sensory loss along the ulnar side of the forearm and hand. If T1 is affected, there may also be the presence of Horner’s syndrome.

The Glasgow-Blatchford Score (GBS) is a helpful tool for determining whether patients with acute upper gastrointestinal bleeding (AUGIB) can be discharged from emergency departments. Patients with scores of less than 1 can be considered for discharge. Unlike the full Rockall score, the GBS does not rely on endoscopic findings. The full Rockall score is also used to assess risk in patients with AUGIB, but it relies on endoscopic findings and is not suitable for use during initial assessment. The Oakland score, on the other hand, is an assessment tool specifically designed for evaluating risk in patients with acute lower gastrointestinal bleeding (ALGIB). The EVendo scoring system is used to predict the presence and size of oesophageal varices before screening endoscopy in patients over 18 years old with known or suspected liver cirrhosis. Lastly, the HAS-BLED scoring system is used to estimate the risk of major bleeding in patients on anticoagulation therapy, helping to assess the risk-benefit in atrial fibrillation care.

Anterior uveitis refers to the inflammation of the iris and is characterized by a painful and red eye. It is often accompanied by symptoms such as sensitivity to light, excessive tearing, and a decrease in visual clarity. In less than 10% of cases, the inflammation may extend to the posterior chamber. The condition can also lead to the formation of adhesions between the iris and the lens or cornea, resulting in an irregularly shaped pupil known as synechia. In severe cases, pus may accumulate in the front part of the eye, specifically the anterior chamber, causing a condition called hypopyon.

There are various factors that can cause anterior uveitis, including idiopathic cases where no specific cause can be identified. Other causes include trauma, chronic joint diseases like spondyloarthropathies and juvenile chronic arthritis, ankylosing spondylitis, inflammatory bowel disease, psoriasis, sarcoidosis, and infections such as Lyme disease, tuberculosis, leptospirosis, herpes simplex virus (HSV), and varicella-zoster virus (VZV). It is worth noting that approximately 50% of patients with anterior uveitis have a strong association with the HLA-B27 genotype.

Complications that can arise from uveitis include the development of cataracts, glaucoma, band keratopathy (a condition where calcium deposits form on the cornea), and even blindness.

Type I hypersensitivity reactions are allergic reactions that occur when a person is exposed again to a particular antigen, known as an allergen. These reactions are triggered by IgE and typically happen within 15 to 30 minutes after exposure to the allergen.

A rapid onset of an urticarial rash, which occurs shortly after being exposed to an allergen (such as latex), is highly likely to be caused by a type I hypersensitivity reaction.

The age of the child can help determine the most probable diagnosis. Transient synovitis (irritable hip) is commonly observed in children aged 3 to 10. Septic arthritis is more prevalent in children under 4 years old, while Perthes disease is typically diagnosed between the ages of 4 and 8. SUFE is usually seen in girls around the age of 12 and boys around the age of 13.

Further Reading:

– Transient Synovitis (irritable hip):
– Most common hip problem in children
– Causes transient inflammation of the synovium
– Presents with thigh, groin, and/or hip pain with impaired weight bearing
– Mild to moderate restriction of hip internal rotation is common
– Symptoms usually resolve quickly with rest and anti-inflammatory treatment

– Slipped Upper Femoral Epiphysis (SUFE):
– Displacement of the femoral head epiphysis postero-inferiorly
– Usually affects adolescents
– Can present acutely following trauma or with chronic, persistent symptoms
– Associated with loss of internal rotation of the leg in flexion
– Treatment involves surgical fixation by pinning

– Perthes disease:
– Degenerative condition affecting the hip joints of children
– Avascular necrosis of the femoral head is the cause
– Presents with hip pain, limp, stiffness, and reduced range of hip movements
– X-ray changes include widening of joint space and decreased femoral head size/flattening
– Treatment can be conservative or operative, depending on the severity

– Important differentials:
– Septic arthritis: Acute hip pain associated with systemic upset and severe limitation of affected joint
– Non-accidental injury (NAI): Should be considered in younger children and toddlers presenting with a limp, even without a trauma history
– Malignancy: Rare, but osteosarcoma may present with hip pain or limp, especially in tall teenage boys
– Developmental dysplasia of the hip: Often picked up on newborn examination with positive Barlow and Ortolani tests
– Juvenile idiopathic arthritis (JIA): Joint pain and swelling, limp, positive ANA in some cases
– Coagulopathy: Haemophilia, HSP, and sickle cell disease can cause hip pain through different mechanisms

The term Apparent Life-Threatening Event (ALTE) has traditionally been used to describe a specific type of event. However, in 2016, the American Academy of Paediatrics (AAP) recommended replacing this term with a new one called Brief Resolved Unexplained Event (BRUE).

An ALTE is defined as an episode that is frightening to the observer and is characterized by a combination of symptoms such as apnoea (central or occasionally obstructive), color change (usually cyanotic or pallid but occasionally erythematous or plethoric), significant change in muscle tone (usually marked limpness), choking, or gagging. In some cases, the observer may even fear that the infant has died.

On the other hand, BRUE has stricter criteria and is only applicable to episodes that occur in infants under 12 months old. A BRUE is considered brief, typically lasting 2-30 seconds but no longer than 1 minute. It must also have resolved, meaning the infant has returned to their baseline state. Additionally, it should not be explained by any identifiable medical condition and must be characterized by at least one of the following: cyanosis or pallor, absent, decreased, or irregular breathing, marked change in muscle tone (hyper- or hypotonia), or altered level of responsiveness.

To diagnose a BRUE, a full history and physical examination of the infant must be conducted, and if no explanation for the event is found, it can be classified as a BRUE. Once a BRUE is diagnosed, it can be risk-stratified to guide further management.

A BRUE is considered low risk if the infant has fully recovered, there are no concerning history or physical examination findings, and the following criteria are met: the infant is over 60 days old, born after 32 weeks gestation with a corrected gestational age over 45 weeks, no CPR was performed by a trained healthcare professional, and this was the first event that lasted less than 1 minute.

Low-risk infants can be safely discharged with early outpatient follow-up within 24 hours. However, it is important to involve the parents/caregivers in the decision-making process. They should be informed that a low-risk BRUE is unlikely to indicate a severe underlying disorder and that the event is unlikely to happen again.

Before discharge, it may be advisable to perform an ECG, observe the infant for a brief period, and conduct a pertussis swab

Korsakoff syndrome is a form of dementia that occurs due to a lack of thiamine (vitamin B1) in the body. This condition is most commonly observed in individuals who have a long history of alcoholism. The main features of Korsakoff syndrome include anterograde amnesia, patchy retrograde amnesia, and confabulation. Additionally, many patients also experience difficulties with language (aphasia), movement (apraxia), recognition (agnosia), or executive functioning. It is important to note that Korsakoff syndrome often coexists with Wernicke’s encephalopathy, which is characterized by a triad of symptoms including ophthalmoplegia, altered mental state, and gait disturbance (ataxia). When both conditions are present, it is referred to as Wernicke-Korsakoff syndrome (WKS).

All patients who present with painless haematuria should undergo cystoscopy to rule out bladder cancer. This procedure is typically done in an outpatient setting as part of a haematuria clinic, using a flexible cystoscope and local anaesthetic.

In this case, the likelihood of prostate cancer is much lower due to the patient’s relatively normal prostate examination and mild symptoms of bladder outlet obstruction.

Bladder cancer is the seventh most common cancer in the UK, with men being three times more likely to develop it than women. The main risk factors for bladder cancer are increasing age and smoking. Approximately 50% of bladder cancers are caused by smoking, which is believed to be due to the presence of certain chemicals that are excreted through the kidneys. Smokers have a 2-6 times higher risk of developing bladder cancer compared to non-smokers.

Painless macroscopic haematuria is the most common symptom in 80-90% of bladder cancer cases. There are usually no abnormalities found during a standard physical examination.

According to current recommendations, the following patients should be urgently referred for a urological assessment:
– Adults over 45 years old with unexplained visible haematuria and no urinary tract infection.
– Adults over 45 years old with visible haematuria that persists or recurs after successful treatment of a urinary tract infection.
– Adults aged 60 and over with unexplained non-visible haematuria and either dysuria or an elevated white cell count on a blood test.

For those aged 60 and over with recurrent or persistent unexplained urinary tract infection, a non-urgent referral for bladder cancer is recommended.

Amiodarone is a medication that is recommended to be administered after the third shock in a shockable cardiac arrest (Vf/pVT) while chest compressions are being performed. The prescribed dose is 300 mg, given as an intravenous bolus that is diluted in 5% dextrose to a volume of 20 mL. It is important to note that amiodarone is not suitable for treating PEA or asystole.

In cases where VF/pVT persists after five defibrillation attempts, an additional dose of 150 mg of amiodarone should be given. However, if amiodarone is not available, lidocaine can be used as an alternative. The recommended dose of lidocaine is 1 mg/kg. It is crucial to avoid administering lidocaine if amiodarone has already been given.

Amiodarone is classified as a membrane-stabilizing antiarrhythmic drug. It works by prolonging the duration of the action potential and the refractory period in both the atrial and ventricular myocardium. This medication also slows down atrioventricular conduction and has a similar effect on accessory pathways.

Additionally, amiodarone has a mild negative inotropic action, meaning it weakens the force of heart contractions. It also causes peripheral vasodilation through non-competitive alpha-blocking effects.

It is important to note that while there is no evidence of long-term benefits from using amiodarone, it may improve short-term survival rates, which justifies its continued use.

According to NICE guidelines, when treating a campylobacter infection, clarithromycin is recommended as the first choice of antibiotic. Antibiotics are typically only prescribed for individuals with severe symptoms, such as a high fever, bloody or frequent diarrhea, or for those who have a weakened immune system, like this patient who has diabetes. NICE advises a dosage of clarithromycin 250-500 mg taken twice daily for a duration of 5-7 days. It is best to start treatment within 3 days of the onset of illness.

Further Reading:

Campylobacter jejuni is a common cause of gastrointestinal infections, particularly travellers diarrhoea. It is a gram-negative bacterium that appears as curved rods. The infection is transmitted through the feco-oral route, often through the ingestion of contaminated meat, especially poultry. The incubation period for Campylobacter jejuni is typically 1-7 days, and the illness usually lasts for about a week.

The main symptoms of Campylobacter jejuni infection include watery, and sometimes bloody, diarrhea accompanied by abdominal cramps, fever, malaise, and headache. In some cases, complications can arise from the infection. Guillain-Barre syndrome (GBS) is one such complication that is associated with Campylobacter jejuni. Approximately 30% of GBS cases are caused by this bacterium.

When managing Campylobacter jejuni infection, conservative measures are usually sufficient, with a focus on maintaining hydration. However, in cases where symptoms are severe, such as high fever, bloody diarrhea, or high-output diarrhea, or if the person is immunocompromised, antibiotics may be necessary. NICE recommends the use of clarithromycin, administered at a dose of 250-500 mg twice daily for 5-7 days, starting within 3 days of the onset of illness.

In order to achieve satisfactory bronchodilation, most individuals require a plasma theophylline concentration of 10-20 mg/litre (55-110 micromol/litre). However, it is possible for a lower concentration to still be effective. Adverse effects can occur within the range of 10-20 mg/litre, and their frequency and severity increase when concentrations exceed 20 mg/litre.

To measure plasma theophylline concentration, a blood sample should be taken five days after starting oral treatment and at least three days after any dose adjustment. For modified-release preparations, the blood sample should typically be taken 4-6 hours after an oral dose (specific sampling times may vary, so it is advisable to consult local guidelines). If aminophylline is administered intravenously, a blood sample should be taken 4-6 hours after initiating treatment.

To minimize the risk of infection and promote proper healing, the best approach for preparing the skin would be to clean it for 30 seconds with 2% chlorhexidine gluconate in 70% alcohol. This solution has been shown to effectively kill bacteria and reduce the risk of infection. Other options such as povidone-iodine, 90% isopropyl alcohol, and 30% isopropyl alcohol may also have some antimicrobial properties, but they are not as effective as chlorhexidine gluconate.

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Peripheral venous cannulation is a procedure that should be performed following established guidelines to minimize the risk of infection, injury, extravasation, and early failure of the cannula. It is important to maintain good hand hygiene, use personal protective equipment, ensure sharps safety, and employ an aseptic non-touch technique during the procedure.

According to the National Institute for Health and Care Excellence (NICE), the skin should be disinfected with a solution of 2% chlorhexidine gluconate and 70% alcohol before inserting the catheter. It is crucial to allow the disinfectant to completely dry before inserting the cannula.

The flow rates of IV cannulas can vary depending on factors such as the gauge, color, type of fluid used, presence of a bio-connector, length of the cannula, and whether the fluid is drained under gravity or pumped under pressure. However, the following are typical flow rates for different gauge sizes: 14 gauge (orange) has a flow rate of 270 ml/minute, 16 gauge (grey) has a flow rate of 180 ml/minute, 18 gauge (green) has a flow rate of 90 ml/minute, 20 gauge (pink) has a flow rate of 60 ml/minute, and 22 gauge (blue) has a flow rate of 36 ml/minute. These flow rates are based on infusing 1000 ml of normal saline under ideal circumstances, but they may vary in practice.

Gallstone ileus occurs when a gallstone becomes stuck in the small intestine, specifically at the caeco-ileal valve. This condition presents with similar symptoms to other causes of small bowel obstruction. Patients may experience colicky central abdominal pain, which can have a gradual onset. Vomiting is common and tends to occur earlier in the course of the illness compared to large bowel obstruction. Abdominal distension and the absence of flatus are also typical signs. Additionally, there may be a lack of normal bowel sounds or the presence of high-pitched tinkling sounds. A mass in the right upper quadrant of the abdomen may be palpable.

Neisseria gonorrhoeae is a type of bacteria that causes the sexually transmitted infection known as gonorrhoea. It is a Gram-negative diplococcus, meaning it appears as pairs of bacteria under a microscope. This infection is most commonly seen in individuals between the ages of 15 and 35, and it is primarily transmitted through sexual contact. One important characteristic of Neisseria gonorrhoeae is its ability to undergo antigenic variation, which means that recovering from an infection does not provide immunity and reinfection is possible.

When Neisseria gonorrhoeae infects the body, it first attaches to the genitourinary epithelium using pili, which are hair-like structures on the surface of the bacteria. It then invades the epithelial layer and triggers a local acute inflammatory response. In men, the clinical features of gonorrhoea often include urethritis (inflammation of the urethra) in about 80% of cases, dysuria (painful urination) in around 50% of cases, and mucopurulent discharge. Rectal infection may also occur, usually without symptoms, but it can cause anal discharge. Pharyngitis, or inflammation of the throat, is usually asymptomatic in men.

In women, the clinical features of gonorrhoea commonly include vaginal discharge in about 50% of cases, lower abdominal pain in around 25% of cases, dysuria in 10-15% of cases, and pelvic/lower abdominal tenderness in less than 5% of cases. Endocervical discharge and/or bleeding may also be present. Similar to men, rectal infection is usually asymptomatic but can cause anal discharge, and pharyngitis is usually asymptomatic in women as well.

Complications of Neisseria gonorrhoeae infection can be serious and include pelvic inflammatory disease (PID) in women, epididymo-orchitis or prostatitis in men, arthritis, dermatitis, pericarditis and/or myocarditis, hepatitis, and meningitis.

To diagnose gonorrhoea, samples of pus from the urethra, cervix, rectum, or throat should be collected and promptly sent to the laboratory in specialized transport medium. Traditionally, diagnosis has been made using Gram-stain and culture techniques, but newer PCR testing methods are becoming more commonly used.

Abducens nerve palsy is often linked to extradural hematoma. When there is a mass effect, downward brain herniation can occur, leading to the involvement of the 6th cranial nerve (abducens nerve, CN VI). This nerve controls the lateral rectus muscle, which is responsible for eye abduction. When the abducens nerve is affected, the lateral rectus muscle is unable to function properly, resulting in an inward turning of the affected eye towards the nose (esotropia).

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Extradural haematoma (EDH) is a collection of blood that forms between the inner surface of the skull and the outer layer of the dura, the dura mater. It is typically caused by head trauma and is often associated with a skull fracture, with the pterion being the most common site of injury. The middle meningeal artery is the most common source of bleeding in EDH.

Clinical features of EDH include a history of head injury with transient loss of consciousness, followed by a lucid interval and gradual loss of consciousness. Other symptoms may include severe headache, sixth cranial nerve palsies, nausea and vomiting, seizures, signs of raised intracranial pressure, and focal neurological deficits.

Imaging of EDH typically shows a biconvex shape and may cause mass effect with brain herniation. It can be differentiated from subdural haematoma by its appearance on imaging.

Management of EDH involves prompt referral to neurosurgery for evacuation of the haematoma. In some cases with a small EDH, conservative management may be considered. With prompt evacuation, the prognosis for EDH is generally good.

Clostridium difficile is a type of bacteria that is Gram-positive, anaerobic, and capable of forming spores. It is found in the intestines of about 3% of healthy adults, according to estimates from the UK Health Protection Agency in 2012.

Clostridium difficile associated diarrhea (CDAD) often occurs after the use of broad-spectrum antibiotics, which disrupt the normal bacteria in the gut and allow Clostridium difficile to multiply. This leads to inflammation and bleeding in the lining of the large intestine, resulting in a distinct pseudomembranous appearance. The majority of Clostridium difficile infections are reported in individuals over the age of 65.

The main symptoms of CDAD include abdominal cramps, severe bloody and/or watery diarrhea, offensive-smelling diarrhea, and fever.

The gold standard for diagnosing Clostridium difficile colitis is a cytotoxin assay. However, this test can be challenging to perform and results may take up to 48 hours to obtain. The most commonly used laboratory test for diagnosing Clostridium difficile colitis is an enzyme-mediated immunoassay that detects toxins A and B. This test has a specificity of 93-100% and a sensitivity of 63-99%.

In some cases, patients may develop a condition called toxic megacolon, which can be life-threatening, especially in frail or elderly individuals.

The current recommended first-line treatment for CDAD is oral vancomycin. For more information, refer to the guidance provided by the National Institute for Health and Care Excellence (NICE) regarding the risk of Clostridium difficile infection associated with the use of broad-spectrum antibiotics.