The Valsalva maneuver response, when assessed with vascular ultrasound, involves observing changes in blood flow and vessel caliber during forced expiration against a closed glottis. This transient increase in intrathoracic pressure impacts venous return and arterial outflow, providing crucial insights into autonomic nervous system function and vascular hemodynamics. Clinically, it helps evaluate conditions like orthostatic intolerance, venous insufficiency, and to identify shunts.
Utilizing ultrasound to analyze the Valsalva response is a non-invasive diagnostic tool for vascular specialists. By measuring changes in vessel diameter and Doppler flow patterns, medical professionals can assess venous valve competence and the severity of venous reflux, aiding in the diagnosis and management of various vascular disorders, including deep vein thrombosis and chronic venous disease.