Prognostic Value of Troponin-T and B-Type Natriuretic Peptide in Patients Hospitalized for COVID-19.

Background: COVID-19 causes severe pulmonary involvement, but the cardiovascular system can also be affected by myocarditis, heart failure and shock. The increase in cardiac biomarkers has been associated with a worse prognosis.

Objectives: To evaluate the prognostic value of Troponin-T (TNT) and natriuretic peptide (BNP) in patients hospitalized for Covid-19.

Resistance to clopidogrel: prevalence and associate variables.

Background: The dual antiplatelet therapy with acetylsalicylic acid (ASA) and clopidogrel is the cornerstone of treatment for patients undergoing angioplasty with coronary stent implantation. However, some of these patients, despite the use of aspirin and clopidogrel, are not effectively anti-aggregated, a phenomenon known as resistance to antiplatelet agents. Its prevalence, as well as the conditions associated with it, is unknown in our country.

[Left internal thoracic artery to left pulmonary artery fistula after coronary artery bypass graft surgery. A rare cause of myocardial ischemia].

We report a patient who developed dyspnea on mild exertion six years after coronary artery bypass graft surgery (CABG). Myocardial ischemia was documented by radionuclide imaging, and coronary angiography showed patency of all grafts and a large fistula between the left internal thoracic artery (LITA) and the left pulmonary artery (LPA). The patient was submitted to surgical closure of the fistula and made an excellent recovery.