Simultaneous Multi-Vessel Very Late Stent Thrombosis in Acute ST-Segment Elevation Myocardial Infarction

Simultaneous multi-vessel very later stent thrombosis (VLST) is a very rare complication of percutaneous coronary intervention (PCI). We present a case of simultaneous multi-vessel VLST as the cause of acute ST-segment elevation myocardial infarction (STEMI). PCI of the culprit vessel was performed at acute presentation. Resolution of in-stent thrombosis in non-culprit vessels was noted on coronary angiography 2 days later. Our case suggests that PCI for culprit lesion in acute setting may be a reasonable option for simultaneous multi-vessel VLST.

Chest Pain in a Psychiatric Patient Due to Clozapine-Induced Myopericarditis

Drug-induced myocarditis is a rare, but underrecognized complication of clozapine therapy for schizophrenia. We present a case of clozapine-induced myocarditis with recovery of cardiac function after drug cessation and summarize the literature to highlight the variable presentation of this condition.

Cardiac Arrest during Transesophageal Echocardiogram (TEE) due to Acute Right Ventricular Failure

The case of a patient who suffered cardiac arrest while undergoing transesophageal echocardiography (TEE) is presented here. A 75-year-old man with moderate right ventricular (RV) dysfunction and pulmonary hypertension became bradycardic and hypotensive after receiving propofol for procedural sedation. His profound hypotension ultimately led to a pulseless electrical activity (PEA) cardiac arrest. TEE images captured immediately prior to cardiac arrest show a severely dilated and hypokinetic RV, consistent with acute right ventricular failure. This case highlights the potentially fatal consequences of procedural sedation in patients with RV dysfunction and pulmonary hypertension.

Acute Nonatherosclerotic Coronary Thromboembolism Presenting with an Inferior STEMI in a Patient on Oral Contraception

Background. Direct coronary embolism in the setting of oral contraceptive pill (OCP) use is a rare adverse effect. It is known for OCP to increase the risk of thrombosis; however, leading to an inferior ST elevated myocardial infarction (STEMI) due to an acute occlusive embolism is a rare entity. Coronary embolism occurs in about 3% of patients with acute coronary syndrome. Case Report. We present a case of a young 41-year-old female with a past medical history significant for dysfunctional uterine bleeding on oral contraceptive pills, who presented to the hospital with chest pain. Her workup was significant for troponin elevation and an electrocardiogram showing inferior ST elevations. The patient was taken emergently to the cardiac catheterization lab. A coronary angiogram revealed a coronary thrombus involving the distal left main and proximal left anterior descending (LAD) with no evidence of atherosclerotic disease. The patient subsequently received anticoagulation therapy leading to complete resolution of symptoms and ST elevations. Conclusion. Coronary embolism is rare and often not considered in the differential of acute coronary syndrome. It is of utmost importance for clinicians to keep a wide differential of nonatherosclerotic causes of STEMI especially when the patient is young, without significant cardiac risk factors.

Acute Lower Limb Ischemia in COVID-19 Patient with Delayed Presentation

Thromboembolism is a common complication of SARS-CoV-2, which generally involves venous thromboembolism, although there have been reported cases of arterial thrombosis affecting cerebral, coronary, and visceral arteries, as well as arteries in the extremities. We discuss a case of a 45-year-old diabetic man with COVID-19 who developed late-onset acute lower limb ischemia.

Coronary Atherosclerosis and Aortic Valve Disease as Long-Term Sequelae of Radiation Therapy in Childhood

Coronary atherosclerosis and valvular heart disease are rare, but potentially severe sequelae following mediastinal radiation therapy. We present a case of premature ischemic heart disease and severe aortic stenosis in a 40-year-old woman following radiation therapy in childhood. We stress the awareness of prior mediastinal radiation therapy as an important risk factor for premature coronary atherosclerosis and valvular heart disease, particularly in younger patients without classical risk factors for coronary artery disease.

Chylopericardium due to Subclavian Vein Thrombosis in the Setting of Protein S Deficiency

Background. Chylopericardium is the accumulation of lymphatic fluid in the pericardial cavity. It can be idiopathic or secondary to trauma, cardiothoracic surgery, neoplasm, radiation, tuberculosis, lymphatic duct dysfunction, thrombosis, or other causes. We present a case of chylopericardium due to subclavian vein thrombosis in a patient with protein S deficiency. Clinical Case. A 48-year-old man with a history of protein S deficiency presented to the emergency department with shortness of breath and a productive cough. CT of the chest showed pulmonary emboli, moderate pericardial effusion, and a large thrombus of the superior vena cava, brachiocephalic vein, and subclavian veins. He developed echocardiographic evidence of cardiac tamponade so he underwent pericardiocentesis with drainage of milky-appearing fluid. Analysis of the fluid showed elevated triglycerides consistent with chylopericardium. The pericardial effusion reaccumulated, likely secondary to lymphatic duct obstruction due to his subclavian vein thrombus. Catheter-assisted thrombolysis was performed with resolution of the patient’s effusion and symptoms. Conclusion. Chylopericardium is a rare but important complication of subclavian vein thrombosis. Management is typically with surgical intervention, although our case represents successful treatment with catheter-assisted thrombolysis.

Large Device-Related Thrombus Detected following Symptoms of Transient Ischemic Attack

As an independent risk factor for stroke, atrial fibrillation has been shown to be associated with a fivefold increase in the cause of embolic stroke in comparison to healthy individuals without atrial fibrillation. This risk may be compounded by other factors; however, the main probable cause of stroke leading from atrial fibrillation is thrombus formation in the left atrial appendage. In patients for whom anticoagulation is contraindicated, left atrial appendage occlusion has become a leading alternative option for therapeutic prevention of thromboembolism and stroke in patients with this condition. Unfortunately, these devices (particularly the WATCHMAN) have been associated with a 3-6% incidence of intracardiac thrombus development postimplantation. Some risk factors for the development of device-related thrombus are high platelet count, permanent atrial fibrillation, resistance to clopidogrel, and prior transient ischemic attack or stroke. Despite following an anticoagulant regimen, thrombus formation was reported in 5.6% of participants of a randomized clinical trial, and further analysis showed that some of these patients continued to develop either ischemic stroke or thromboembolism five years later as compared to patients without initial thrombus development. We present a case of an elderly male with prior history of stroke and transient ischemic attack who developed a large device-related thrombus five months following WATCHMAN FLX™ implantation. Currently, there are no specific recommendations on the management of this rare complication; however, we discuss possible consideration of initially prolonging anticoagulation therapy following implantation for high-risk individuals, as there is an increased possibility for thrombus formation in this population. Management options should continue to be studied for therapeutic benefit in streamlining postprocedural therapy and improve future outcomes in the use of left atrial appendage occlusion devices, as well as continual thrombus prevention.

Acute Limb Ischemia in the Young: A Rare Case of Essential Thrombocytosis

Acute limb ischemia (ALI) is rarely observed in young populations. The hypercoagulable state is a notable cause of ALI other than artery disease progression and cardiac embolization. A hypercoagulable state occurs in essential thrombocytosis because of the overproduction of hematopoietic cells secondary to the mutation of the JAK2, CALR, or MPL genes. We report a rare case of a 37-year-old woman presenting with Rutherford IIA ALI in the left lower extremity. Laboratory data revealed she had a platelet count reaching up to 1.38 mil/μL, with other blood profiles being normal. A JAK2 mutation examination was later performed and proved positive. After careful management with catheter-directed thrombolysis, surgical thrombectomy, and cytoreductive therapy using hydroxyurea, the symptoms subsided and eventually restored the patient to physical activity in less than one month.

A Case of Transcatheter Aortic Valve Implantation in a Centenarian Patient

Calcified aortic stenosis has become the most common form of acquired valvular heart disease in very old patients. Despite this fact, a majority of these patients were turned down by surgery owing to a risk of mortality > 10 % in patients older than 90 years. In recent years, transcatheter aortic valve implantation (TAVI) has emerged as a therapeutic option for severe aortic stenosis. However, there is a paucity of data regarding the outcomes of TAVI in patients older than 100 years. We present the oldest patient who has undergone successful TAVI reported in the current literature.