Abstract
Heart failure remains a medical issue with a high burden of morbidity and mortality. Diagnosis, treatment, and heart failure monitoring continue to be challenges in clinical practice. Many factors have been proposed for the diagnosis, monitoring, and prognosis of heart failure, including left ventricular outflow tract velocity-time integral. Left ventricular outflow tract velocity-time integral is a hemodynamic parameter measured by echocardiography and has a long history of application in calculating stroke volume and cardiac output. Recently, there has been growing evidence suggesting that left ventricular outflow tract velocity-time integral has great potential in monitoring and predicting acute and chronic heart failure patients.