Abstract Background The advent of drug-eluting stents allowed the percutaneous coronary intervention to present safe results in lesions in the left main coronary artery. Objectives To analyze the results of the percutaneous treatment of unprotected left main coronary artery lesion with the use of intravascular ultrasound. Methods Study of consecutive case series carried out from January 2010 to December 2018. Clinical data were collected from patients as well as prognostic scores and data on coronary lesion. Low-grade residual lesion (less […]

Abstract Background: Myocardial reperfusion is a fundamental part of the treatment for ST elevation myocardial infarction (STEMI) and is responsible for reducing morbidity and mortality in affected patients. However, reperfusion rates are usually lower and mortality rates higher in women compared to men. Objectives: To evaluate the prevalence of the use of reperfusion therapies among women and men with STEMI in hospitals where percutaneous coronary intervention (PCI) is available in the state of Sergipe. Methods: This is a cross-sectional study […]

Abstract Background Custodiol®-histidine-tryptophan-ketoglutarate (HTK) cardioplegia is widely used. Objective To compare the outcomes of isolated coronary surgery requiring prolonged cross-clamp time (XCT) in patients receiving a single-dose HTK or multidose cold blood (MCB) cardioplegia. Methods XCT was ≥120 minutes for 148 consecutive patients undergoing isolated coronary surgery (2009−2016). HTK and MCB cardioplegia were used in 38 and 110 cases, respectively. The two cohorts were compared on baseline characteristics, operative data, and early outcomes. Because risk profile and operative data differed […]

Background: Patients with ST-elevation acute myocardial infarction attending primary care centers, treated with pharmaco-invasive strategy, are submitted to coronary angiography within 2-24 hours of fibrinolytic treatment. In this context, the knowledge about biomarkers of reperfusion, such as 50% ST-segment resolution is crucial. Objective: To evaluate the performance of QT interval dispersion in addition to other classical criteria, as an early marker of reperfusion after thrombolytic therapy. Methods: Observational study including 104 patients treated with tenecteplase (TNK), referred for a tertiary […]

Resumo Background: Melatonin is a neuroendocrine hormone synthesized primarily by the pineal gland that is indicated to effectively prevent myocardial reperfusion injury. It is unclear whether melatonin protects cardiac function from reperfusion injury by modulating intracellular calcium homeostasis. Objective: Demonstrate that melatonin protect against myocardial reperfusion injury through modulating IP3R and SERCA2a to maintain calcium homeostasis via activation of ERK1 in cardiomyocytes. Methods: In vitro experiments were performed using H9C2 cells undergoing simulative hypoxia/reoxygenation (H/R) induction. Expression level of ERK1, […]