Valsalva maneuver in echocardiography

Area of Science:

• Cardiology
• Diagnostic Imaging
• Physiology

Background:

• The Valsalva maneuver is a widely recognized physiological test.
• Its application in echocardiography can enhance diagnostic accuracy.
• Adequate performance and interpretation are crucial but often overlooked.

Purpose of the Study:

• To detail the correct performance of the Valsalva maneuver.
• To explain the interpretation of its hemodynamic effects in echocardiography.
• To highlight its utility in diagnosing specific cardiac conditions.

Main Methods:

• Description of the four phases of the Valsalva hemodynamic effect.
• Application of the maneuver during echocardiographic examinations.
• Correlation of observed hemodynamic changes with specific diagnoses.

Main Results:

• The Valsalva maneuver effectively decreases preload.
• It can provoke or increase left ventricular outflow tract (LVOT) gradients in dynamic obstruction.
• A >50% decrease in the E/A ratio indicates elevated LV filling pressures and diastolic dysfunction.
• The maneuver can transiently increase right atrial (RA) pressure, aiding in the detection of patent foramen ovale (PFO).

Conclusions:

• The Valsalva maneuver is a valuable, easily performed tool for echocardiographic diagnosis.
• Correct technique is essential for reliable results.
• It aids in diagnosing dynamic LVOT obstruction, diastolic dysfunction, and PFO.