Abstract Introduction: Heart failure (HF) causes peripheral hypoperfusion, with impaired tissue oxygenation and, considering that penile erection is a predominantly vascular phenomenon, may affect male sexual function (SF). Objective: In men with HF, evaluate peripheral muscle oxygenation and erectile function (EF). Methods: Presentation of five case reports of sedentary male individuals with HF functional class II (2 cases) and III (3 cases), with left ventricular ejection fraction ≤45%. FS was assessed by the international index of erectile function (IIEF) and […]