Spontaneous bacterial peritonitis (SBP) is a condition where bacteria infect the fluid in the abdomen, known as ascites. It is commonly seen in patients with ascites. Symptoms of SBP include fever, chills, nausea, vomiting, abdominal pain, and mental confusion. To diagnose SBP, a procedure called paracentesis is done to analyze the fluid in the abdomen. If the neutrophil count in the fluid is higher than 250 cells/mm³, it confirms the diagnosis of SBP, regardless of whether bacteria are found in the culture. The initial treatment for acute community-acquired SBP is usually a 3rd generation cephalosporin antibiotic like cefotaxime or ceftriaxone. However, hospital-acquired SBP may require different antibiotics based on local resistance patterns. Patients who have had SBP in the past are at a high risk of recurrence and may need long-term antibiotic prophylaxis.

Further Reading:

Cirrhosis is a condition where the liver undergoes structural changes, resulting in dysfunction of its normal functions. It can be classified as either compensated or decompensated. Compensated cirrhosis refers to a stage where the liver can still function effectively with minimal symptoms, while decompensated cirrhosis is when the liver damage is severe and clinical complications are present.

Cirrhosis develops over a period of several years due to repeated insults to the liver. Risk factors for cirrhosis include alcohol misuse, hepatitis B and C infection, obesity, type 2 diabetes, autoimmune liver disease, genetic conditions, certain medications, and other rare conditions.

The prognosis of cirrhosis can be assessed using the Child-Pugh score, which predicts mortality based on parameters such as bilirubin levels, albumin levels, INR, ascites, and encephalopathy. The score ranges from A to C, with higher scores indicating a poorer prognosis.

Complications of cirrhosis include portal hypertension, ascites, hepatic encephalopathy, variceal hemorrhage, increased infection risk, hepatocellular carcinoma, and cardiovascular complications.

Diagnosis of cirrhosis is typically done through liver function tests, blood tests, viral hepatitis screening, and imaging techniques such as transient elastography or acoustic radiation force impulse imaging. Liver biopsy may also be performed in some cases.

Management of cirrhosis involves treating the underlying cause, controlling risk factors, and monitoring for complications. Complications such as ascites, spontaneous bacterial peritonitis, oesophageal varices, and hepatic encephalopathy require specific management strategies.

Overall, cirrhosis is a progressive condition that requires ongoing monitoring and management to prevent further complications and improve outcomes for patients.

The most probable diagnosis in this case is septic arthritis, which occurs when an infectious agent invades a joint and causes pus formation. The clinical features of septic arthritis include pain in the affected joint, redness, warmth, and swelling of the joint, and difficulty in moving the joint. Patients may also experience fever and overall feeling of being unwell.

The most common cause of septic arthritis is Staphylococcus aureus, but other bacteria can also be responsible. These include Streptococcus spp., Haemophilus influenzae, Neisseria gonorrhoea (typically seen in sexually active young adults with macules or vesicles on the trunk), and Escherichia coli (common in intravenous drug users, the elderly, and seriously ill individuals).

According to the current recommendations by NICE (National Institute for Health and Care Excellence) and the BNF (British National Formulary), the treatment for septic arthritis involves using specific antibiotics. Flucloxacillin is the first-line choice, but if a patient is allergic to penicillin, clindamycin can be used instead. If there is suspicion of MRSA (Methicillin-resistant Staphylococcus aureus), vancomycin is recommended. In cases where gonococcal arthritis or Gram-negative infection is suspected, cefotaxime is the preferred antibiotic.

The suggested duration of treatment for septic arthritis is 4-6 weeks, although it may be longer if the infection is complicated.

One of the clinical features of a tension pneumothorax is the deviation of the trachea away from the side where the pneumothorax is located. This particular feature is typically observed in cases of right-sided tension pneumothorax.

Further Reading:

A pneumothorax is an abnormal collection of air in the pleural cavity of the lung. It can be classified by cause as primary spontaneous, secondary spontaneous, or traumatic. Primary spontaneous pneumothorax occurs without any obvious cause in the absence of underlying lung disease, while secondary spontaneous pneumothorax occurs in patients with significant underlying lung diseases. Traumatic pneumothorax is caused by trauma to the lung, often from blunt or penetrating chest wall injuries.

Tension pneumothorax is a life-threatening condition where the collection of air in the pleural cavity expands and compresses normal lung tissue and mediastinal structures. It can be caused by any of the aforementioned types of pneumothorax. Immediate management of tension pneumothorax involves the ABCDE approach, which includes ensuring a patent airway, controlling the C-spine, providing supplemental oxygen, establishing IV access for fluid resuscitation, and assessing and managing other injuries.

Treatment of tension pneumothorax involves needle thoracocentesis as a temporary measure to provide immediate decompression, followed by tube thoracostomy as definitive management. Needle thoracocentesis involves inserting a 14g cannula into the pleural space, typically via the 4th or 5th intercostal space midaxillary line. If the patient is peri-arrest, immediate thoracostomy is advised.

The pathophysiology of tension pneumothorax involves disruption to the visceral or parietal pleura, allowing air to flow into the pleural space. This can occur through an injury to the lung parenchyma and visceral pleura, or through an entry wound to the external chest wall in the case of a sucking pneumothorax. Injured tissue forms a one-way valve, allowing air to enter the pleural space with inhalation but prohibiting air outflow. This leads to a progressive increase in the volume of non-absorbable intrapleural air with each inspiration, causing pleural volume and pressure to rise within the affected hemithorax.

Lesions that occur in the optic nerve, specifically those that are located outside of the optic chiasm, result in visual loss in only one eye on the same side as the lesion. There are several factors that can cause these optic nerve lesions, including optic neuritis which is often associated with multiple sclerosis. Other causes include compression of the optic nerve due to tumors in the eye, toxicity from substances like ethambutol or methanol, and trauma to the optic nerve such as fractures in the orbital bone. The diagram provided below illustrates the different types of visual field defects that can occur depending on the location of the lesion along the visual pathway.

The most probable diagnosis in this case is vaginal thrush. Vaginal thrush is characterized by symptoms such as vulval irritation and itching, vulval redness, and a discharge that is often described as cheesy. Some women may also experience dysuria, which is pain or discomfort during urination, but without an increase in frequency or urgency. The recommended treatment for vaginal thrush is the use of antifungal agents, with topical azoles like clotrimazole or miconazole being commonly prescribed. It is important to note that breastfeeding patients should avoid taking oral terbinafine as it can pass into breast milk.

Iodine deficiency is a widespread issue globally and is the leading cause of hypothyroidism worldwide. It is particularly prevalent in numerous African countries, as well as in developed nations such as Norway, Germany, Russia, and Ukraine. In the UK, however, autoimmune thyroiditis is the most common cause of hypothyroidism.

Further Reading:

The thyroid gland is an endocrine organ located in the anterior neck. It consists of two lobes connected by an isthmus. The gland produces hormones called thyroxine (T4) and triiodothyronine (T3), which regulate energy use, protein synthesis, and the body’s sensitivity to other hormones. The production of T4 and T3 is stimulated by thyroid-stimulating hormone (TSH) secreted by the pituitary gland, which is in turn stimulated by thyrotropin-releasing hormone (TRH) from the hypothalamus.

Thyroid disorders can occur when there is an imbalance in the production or regulation of thyroid hormones. Hypothyroidism is characterized by a deficiency of thyroid hormones, while hyperthyroidism is characterized by an excess. The most common cause of hypothyroidism is autoimmune thyroiditis, also known as Hashimoto’s thyroiditis. It is more common in women and is often associated with goiter. Other causes include subacute thyroiditis, atrophic thyroiditis, and iodine deficiency. On the other hand, the most common cause of hyperthyroidism is Graves’ disease, which is also an autoimmune disorder. Other causes include toxic multinodular goiter and subacute thyroiditis.

The symptoms and signs of thyroid disorders can vary depending on whether the thyroid gland is underactive or overactive. In hypothyroidism, common symptoms include weight gain, lethargy, cold intolerance, and dry skin. In hyperthyroidism, common symptoms include weight loss, restlessness, heat intolerance, and increased sweating. Both hypothyroidism and hyperthyroidism can also affect other systems in the body, such as the cardiovascular, gastrointestinal, and neurological systems.

Complications of thyroid disorders can include dyslipidemia, metabolic syndrome, coronary heart disease, heart failure, subfertility and infertility, impaired special senses, and myxedema coma in severe cases of hypothyroidism. In hyperthyroidism, complications can include Graves’ orbitopathy, compression of the esophagus or trachea by goiter, thyrotoxic periodic paralysis, arrhythmias, osteoporosis, mood disorders, and increased obstetric complications.

Myxedema coma is a rare and life-threatening complication of severe hypothyroidism. It can be triggered by factors such as infection or physiological insult and presents with lethargy, bradycardia, hypothermia, hypotension, hypoventilation, altered mental state, seizures and/or coma.

A Meckel’s diverticulum is a leftover part of the vitellointestinal duct, which is no longer needed in the body. It is the most common abnormality in the gastrointestinal tract, found in about 2% of people. Interestingly, it is twice as likely to occur in men compared to women.

When a Meckel’s diverticulum is present, it is usually located in the lower part of the small intestine, specifically within 60-100 cm (2 feet) of the ileocaecal valve. These diverticula are typically 3-6 cm (approximately 2 inches) long and may have a larger opening than the ileum.

Meckel’s diverticula are often discovered incidentally, especially during an appendectomy. Most of the time, they do not cause any symptoms. However, they can lead to complications such as bleeding (25-50% of cases), intestinal blockage (10-40% of cases), diverticulitis, or perforation.

These diverticula run in the opposite direction of the intestine’s natural folds but receive their blood supply from the ileum mesentery. They can be identified by a specific blood vessel called the vitelline artery. Typically, they are lined with the same type of tissue as the ileum, but they often contain abnormal tissue, with gastric tissue being the most common (50%) and pancreatic tissue being the second most common (5%). In rare cases, colonic or jejunal tissue may be present.

To remember some key facts about Meckel’s diverticulum, the rule of 2s can be helpful:
– It is found in 2% of the population.
– It is more common in men, with a ratio of 2:1 compared to women.
– It is located 2 feet away from the ileocaecal valve.
– It is approximately 2 inches long.
– It often contains two types of abnormal tissue: gastric and pancreatic.
– The most common age for clinical presentation is 2 years old.

When giving chest compressions to an adult, it is important to compress the sternum to a depth of 5-6 cm. The resuscitation council updated their guidance in 2015 and now recommends a ratio of 30 chest compressions to 2 rescue breaths. It is worth noting that according to the algorithm, checking for a pulse is no longer necessary in the latest BLS sequence. The chest compressions should be administered at a rate of 100-120 per minute, with a ratio of 30 compressions to 2 rescue breaths.

Further Reading:

Cardiopulmonary arrest is a serious event with low survival rates. In non-traumatic cardiac arrest, only about 20% of patients who arrest as an in-patient survive to hospital discharge, while the survival rate for out-of-hospital cardiac arrest is approximately 8%. The Resus Council BLS/AED Algorithm for 2015 recommends chest compressions at a rate of 100-120 per minute with a compression depth of 5-6 cm. The ratio of chest compressions to rescue breaths is 30:2.

After a cardiac arrest, the goal of patient care is to minimize the impact of post cardiac arrest syndrome, which includes brain injury, myocardial dysfunction, the ischaemic/reperfusion response, and the underlying pathology that caused the arrest. The ABCDE approach is used for clinical assessment and general management. Intubation may be necessary if the airway cannot be maintained by simple measures or if it is immediately threatened. Controlled ventilation is aimed at maintaining oxygen saturation levels between 94-98% and normocarbia. Fluid status may be difficult to judge, but a target mean arterial pressure (MAP) between 65 and 100 mmHg is recommended. Inotropes may be administered to maintain blood pressure. Sedation should be adequate to gain control of ventilation, and short-acting sedating agents like propofol are preferred. Blood glucose levels should be maintained below 8 mmol/l. Pyrexia should be avoided, and there is some evidence for controlled mild hypothermia but no consensus on this.

Post ROSC investigations may include a chest X-ray, ECG monitoring, serial potassium and lactate measurements, and other imaging modalities like ultrasonography, echocardiography, CTPA, and CT head, depending on availability and skills in the local department. Treatment should be directed towards the underlying cause, and PCI or thrombolysis may be considered for acute coronary syndrome or suspected pulmonary embolism, respectively.

Patients who are comatose after ROSC without significant pre-arrest comorbidities should be transferred to the ICU for supportive care. Neurological outcome at 72 hours is the best prognostic indicator of outcome.

This patient has been experiencing absence seizures, which are a form of primary generalized epilepsy that is frequently observed in children.

The defining characteristic of absence seizures is a sudden and immediate loss of consciousness, causing a disruption in ongoing activities. During these episodes, individuals may exhibit a vacant stare and occasionally a brief upward movement of the eyes.

While an EEG cannot definitively confirm or rule out an epilepsy diagnosis, it does provide valuable information in the diagnostic process. In the case of absence seizures, EEG results typically reveal generalized spike-and-slow wave complexes occurring at a frequency of 3-4 Hz.

Fractures that extend into the calcaneocuboid joint are commonly intra-articular. It is recommended to refer patients to orthopaedics for further evaluation and treatment. Conservative management usually involves keeping the patient non-weight bearing for a period of 6-12 weeks.

Further Reading:

Calcaneus fractures are a common type of lower limb and joint injury. The calcaneus, or heel bone, is the most frequently fractured tarsal bone. These fractures are often intra-articular, meaning they involve the joint. The most common cause of calcaneus fractures is a fall or jump from a height.

When assessing calcaneus fractures, X-rays are used to visualize the fracture lines. Two angles are commonly assessed to determine the severity of the fracture. Böhler’s angle, which measures the angle between two tangent lines drawn across the anterior and posterior borders of the calcaneus, should be between 20-40 degrees. If it is less than 20 degrees, it indicates a calcaneal fracture with flattening. The angle of Gissane, which measures the depression of the posterior facet of the subtalar joint, should be between 120-145 degrees. An increased angle of Gissane suggests a calcaneal fracture.

In the emergency department, the management of a fractured calcaneus involves identifying the injury and any associated injuries, providing pain relief, elevating the affected limb(s), and referring the patient to an orthopedic specialist. It is important to be aware that calcaneus fractures are often accompanied by other injuries, such as bilateral fractures of vertebral fractures.

The definitive management of a fractured calcaneus can be done conservatively or through surgery, specifically open reduction internal fixation (ORIF). The orthopedic team will typically order a CT or MRI scan to classify the fracture and determine the most appropriate treatment. However, a recent UK heel fracture trial suggests that in most cases, ORIF does not improve fracture outcomes.