Resolution of Sinus Tachycardia Secondary to Hyperthyroidism With Ivabradine.

Currently, ivabradine is not approved for the treatment of sinus tachycardia secondary to hyperthyroidism. We aimed to increase the recognition of ivabradine as an effective alternative to, or combination with, beta-blockers in controlling sinus tachycardia secondary to hyperthyroidism. Elevated thyroid hormone levels enhance cardiac performance through a positive chronotropic effect, resulting in an increased heart rate (HR), an effect brought on by increasing the funny current at sinoatrial node (SAN).

Mycobacterium abscessus Pneumonia in Severe Alcoholism.

Non-tuberculous mycobacterial infections (mycobacterium other than and ) are organisms that are commonly found in the environment such as water, soil, and dust. They may form difficult to eliminate biofilms and have been reported to cause significant infections in humans, especially in immunocompromised hosts. This article describes an interesting case of in the lung.

Rare Case of Reversible Pulmonary Arterial Hypertension Secondary to Cyclophosphamide and Doxorubicin Chemotherapy.

Pulmonary arterial hypertension (PAH), characterized as a resting mean pulmonary artery pressure greater than 25 mmHg, is due to the narrowing of the pulmonary arteries, which can be idiopathic, inherited, or drug-related. Alkylating agents, including cyclophosphamide, are a risk factor for developing the pulmonary veno-occlusive disease. Drug-induced PAH is extremely rare.

An Unusual Case of Hemorrhagic Pleuropericarditis After COVID-19 Vaccination.

As coronavirus disease 2019 (COVID-19) vaccines are being increasingly administered worldwide, subsequent side effects, such as myocarditis, pericarditis, and myopericarditis, are becoming increasingly more common. Our case describes a 64-year-old male who developed chest pain and shortness of breath one week after receiving the Moderna (Cambridge, Massachusetts) COVID-19 mRNA vaccine. He was found to have a large, left-sided pleural effusion and a small pericardial effusion.