The sniff test, using ultrasound for diaphragm evaluation, is a key diagnostic tool in lung and respiratory assessment. This dynamic ultrasound technique assesses diaphragmatic motion and function by observing its movement during quiet breathing and a maximal sniff maneuver. It helps identify diaphragmatic paralysis or weakness, which can significantly impact respiratory mechanics and overall lung health.
This non-invasive, real-time ultrasound examination offers critical insights for pulmonologists and intensivists. By visualizing the diaphragm’s excursion, thickness, and paradoxical motion, medical professionals can accurately diagnose various respiratory conditions. The sniff test is vital for understanding lung mechanics, guiding treatment strategies, and optimizing patient care in respiratory medicine.