ABSTRACT
Abstract Chloroquine (CQ) and Hydroxychloroquine (HCQ) are antimalarial drugs, with anti-inflammatory properties that justify their use in the treatment of systemic lupus erythematosus and rheumatic diseases. A pandemic caused by the new coronavirus led the entire world's scientific community to look for drugs already available on the market, capable of exercising beneficial actions in the fight against the disease. Preliminary studies in patients, as well as in vitro studies, suggested possible therapeutic effects associated with the use of HCQ and CQ in the treatment of COVID-19. Despite controversies over the effects of these drugs in combating the "cytokine storm" associated with COVID and the dismal of results in different clinical trials in Brazil, their use has been encouraged and several ongoing investigative studies are underway. In addition to the possible beneficial effects on the prognosis of patients with SARS-CoV-2, such drugs include varied effects on the cardiovascular system, ranging from positive developments related to their vasodilator properties to potential negative effects, such as cardiotoxicity. This work presents the main effects exerted by these drugs on the cardiovascular system, in order to contribute to a scientific discussion about the repurposing of these drugs in the context of COVID-19.
Subject(s)
Chloroquine/toxicity , Azithromycin/therapeutic use , COVID-19/drug therapy , Chloroquine/adverse effects , Chloroquine/therapeutic use , Azithromycin/adverse effects , Azithromycin/toxicity , Drug InteractionsABSTRACT
Este trabalho faz uma revisão sobre o tema de tortuosidade coronariana abordando várias situações na prática clínica aonde a tortuosidade coronariana pode desempenhar um papel relevante e procura avaliar se há correlação entre tortuosidade coronariana e a presença de isquemia miocárdica em pacientes sem obstruções coronarianas fazendo uma busca na literatura das evidências científicas. Livro-texto de Fisiologia em Cardiologia com estudo da circulação coronariana, artigos teóricos com estudos de Hemodinâmica, Dinâmica de Fluidos e de Mecânica e artigos experimentais com simulação em computadores serviram de sustentação para a formulação da hipótese a ser verificada
Subject(s)
Humans , Male , Female , Aged , Coronary Circulation , Coronary Vessels/physiopathology , Myocardial Ischemia/physiopathology , Age Factors , Aging , Echocardiography/methods , Heart , Hypertension/complications , Oxygen Consumption/physiology , Regional Blood Flow/physiologyABSTRACT
É relatado um caso de morte súbita (MS) registrada através de eletrocardiografia dinâmica (Holter) e demonstrada como uma rara manifestaçäo da disfunçäo do nódulo sinusal. É destacada a fundamental importância do método para avaliar os fatores precipitantes da arritmia fatal