[Normal values of valvular flow velocities determined by Doppler echocardiography: relations with heart rate and age].

Abstract

VTI is a Doppler parameter independent of body surface area, inversely related to heart rate, not sex-related and remains stable up to the age of 60. Normal mean velocity values should be defined in relation to heart rate and age. Normal values of these Doppler parameters should be borne in mind for non-invasive assessment of cardiovascular function.