[Normal intracardiac flow in middle-aged subjects based on Doppler echocardiographic data]

Area of Science:

• Cardiovascular Physiology
• Diagnostic Imaging
• Echocardiography

Context:

• Doppler echocardiography is a key tool for assessing blood flow dynamics.
• Understanding normal flow patterns is crucial for identifying pathological conditions.
• Previous studies have established various hemodynamic parameters.

Purpose:

• To characterize normal atrioventricular valve and great vessel blood flow using Doppler echocardiography.
• To establish reference values for flow velocities, patterns, and timing in healthy adults.
• To investigate respiratory variations and turbulent flow in healthy individuals.

Summary:

• Normal diastolic flows from atrioventricular valves (mitral and tricuspid) are directed towards the monitor, with distinct early and late filling peaks.
• Systolic flows through the aorta and pulmonary artery are single-peaked, with distinct spectral characteristics.
• Respiratory variations were noted in tricuspid flow, and transient systolic turbulent flow was observed in a subset of individuals.

Impact:

• Provides normative data for Doppler echocardiography of valvular and great vessel flows.
• Establishes baseline parameters for identifying subtle hemodynamic abnormalities.
• Contributes to a better understanding of cardiac function in healthy individuals.