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A 79-year-old man was admitted to our ward with symptomatic heart failure 2 months after aortic valve replacement due to severe aortic stenosis. On the third day following admission, he became febrile (>38°C) while manifesting an increase in inflammatory markers. Endocarditis was suspected despite negative blood cultures. check details Echocardiogram (transthoracic and transesophageal) did not describe any vegetations. No hypermetabolic lesions were described on the Positron emission tomography scan. Empirical antibiotics were started but the fever persisted. Serologies revealed a Coxiella burnetii IgG phase II titre of 1800, high erythrocyte sedimentation rate. Positive antinuclear antibodies, antibeta2 IgM and anticardiolipin supported a diagnosis of acute Q fever endocarditis. Doxycycline and hydroxychloroquine were started with total resolution of symptoms. This case illustrates the difficulty of diagnosing Q fever endocarditis during its acute phase, not only because vegetations can be minimal or absent, a challenge that is further compounded by a complex presentation of immunological markers.Autoimmune hepatitis (AIH) is a rare chronic liver disease with a non-specific clinical presentation. Its physiopathology is not fully understood and, if untreated, can progress to cirrhosis and even fulminant liver failure. Here, we describe a case of a 73-year-old patient with an 11-month history suggestive of liver disease, who was concomitantly diagnosed with AIH and the extremely rare postinfantile giant cell hepatitis (PIGCH). Despite standard immunosuppressive therapy, the patient presented a severe clinical course, culminating in acute-on-chronic liver failure and death. This case reminds physicians of the importance of an early diagnosis, close monitoring and timely treatment of AIH. It also highlights the significant role in prognosis of the specific histological pattern of PIGCH, which has been mainly associated with a serious clinical outcome and unpredictable response to immunosuppressive therapy. Triggers of both AIH and PIGCH, such as viral infections, must be excluded, given their treatment implications.Redo mitral valve replacement surgery due to bioprosthetic valve failure can carry serious surgical challenges. In addition to the usual redo sternotomy risk, there is risk of circumflex coronary artery injury or atrioventricular disruption from explanting the prosthesis. Alternatives to prosthesis explantation may be needed in some cases.We report a case of mitral bioprosthetic valve failure in a young patient who had a history of atrioventricular disruption during the first surgery and had pericardial patch repair of the defect. The risk of explanting the bioprosthesis during redo surgery was very high. Therefore, we performed valve replacement using valve-on-valve technique in which the new valve is implanted within the sewing ring of the previous bioprosthesis without explanting the valve. This technique converted a very highly futile surgery to a conventional redo surgery risk. The patient had a successful surgery with no intraoperative or postoperative complications.Severe hypertriglyceridaemia can lead to acute pancreatitis, which is associated with maternal and perinatal mortality when it occurs in pregnancy. Rapid reduction of triglyceride levels is a primary goal in the management of severe hypertriglyceridaemia, however, there are limited safe option for treatment in pregnancy. We present a case of a woman without diabetes presenting with severe hypertriglyceridaemia in late gestation who was safely and successfully treated with insulin and review the literature surrounding the management of this important condition.A young man presented to the emergency department with seizures and recurrent episodes of polymorphic ventricular tachycardia (PMVT)/torsades de pointes (TdP) requiring cardioversion and administration of intravenous magnesium. A battery of tests performed to identify a cause for his arrhythmias and seizures were all normal. A revisit of history with family revealed he had consumed over 100 tablets/day of loperamide for the past 1 year. A prolonged QT interval on his ECG raised concerns for long QT syndrome (LQTS) (congenital or acquired). Our patient was suspected to have loperamide-induced cardiotoxicity. TdP is a specific PMVT that occurs with a prolonged QT interval and is usually drug-induced. Less frequently, congenital LQTS may be implicated. With supportive care, including mechanical ventilation, vasopressors and temporary transvenous overdrive pacing, our patient recovered completely. We describe the importance of a systematic and time-sensitive approach to diagnosing critical illness. Loperamide overdose may cause QT prolongation, life-threatening arrhythmias/cardiogenic shock, or cardiac arrest. Seizures/epilepsy may also be a manifestation in young patients. There is a substantial need to revisit the safety of over-the-counter medications and increasing awareness of manifestations of drug overdose.A thyroid storm (or thyroid crisis) is an emergency in endocrinology. It is a form of complication of hyperthyroidism that can be life-threatening. Inadequate control of hyperthyroidism in pregnancy could develop into thyroid storm, especially in the peripartum period. We present a woman came in the second stage of labour, with thyroid storm, superimposed pre-eclampsia, acute lung oedema and impending respiratory failure. Treatment for thyroid storm, pre-eclampsia protocol and corticosteroid was delivered. The baby was born uneventfully, while the mother was discharged after 5 days of hospitalisation. Delivery is an important precipitant in the development of thyroid storm in uncontrolled hyperthyroidism in pregnancy. Although very rare, it can cause severe consequences. Diagnosis and treatment guidelines for thyroid storm were available and should be done aggressively and immediately. Uncontrolled hyperthyroidism should be prevented by adequate control in thyroid hormone levels, especially before the peripartum period.Used for a wide range of cancers, nivolumab has been reported to cause immune-related adverse events, including isolated adrenocorticotropic hormone deficiency (IAD). We report an 81-year-old woman with malignant mesothelioma who presented with abdominal pain after eight courses of nivolumab therapy, leading to the diagnosis of nivolumab-induced IAD. We should consider adrenal insufficiency (AI) when a patient on nivolumab complains of abdominal pain and has no other explanatory findings. Infusion-resistant hypotension and hyponatraemia can further suggest AI.