Characteristics of Patients With Acute Coronary Syndrome and Normal Electrocardiogram.

Background: Patients with acute coronary syndrome (ACS) and normal electrocardiogram (ECG) may have an increased risk of late diagnosis and complications of the disease.

Objective: To study the demographic, angiographic and echocardiographic characteristics of patients hospitalized for ACS in whom the ECG was normal on admission to the hospital.

Methods: This retrospective study included patients who were hospitalized for ACS without ST-elevation between 2015 and 2023 and who had coronary artery disease (CAD) confirmed by coronary angiography.

The relationship of diagonal earlobe crease (Frank's sign) and obstructive coronary artery disease in patients undergoing coronary angiography.

Background: Traditional risk factors for cardiovascular disease (CVD) play an important role in the clinical evaluation of patients with symptoms suggestive of coronary artery disease (CAD). The utility of the diagonal earlobe crease (DELC) in predicting the presence of CAD is controversial.

Purpose: To investigate the association between DELC, traditional CVD risk factors, and obstructive CAD.

COVID-19 Outbreak in an Urban Hemodialysis Unit.

Rationale & Objective: Hemodialysis patients are at increased risk for coronavirus disease 2019 (COVID-19) transmission due in part to difficulty maintaining physical distancing. Our hemodialysis unit experienced a COVID-19 outbreak despite following symptom-based screening guidelines. We describe the course of the COVID-19 outbreak and the infection control measures taken for mitigation.

Modified hemoglobin in hypoglycemia caused by hyperinsulinism.

Hemoglobin (Hb) was found to be modified in patients with prolonged hypoglycemia caused by hyperinsulinism. This modification was of a nonpolar nature, did not affect the overall charge of the Hb and caused its aggregation in aqueous solution. After normal concentrations of glucose and insulin were reestablished, this modification slowly disappeared.