Lung Sounds and Patterns - In this animation, we show the sound patterns and breathing characteristics of various lung conditions — from normal vesicular breathing to severe respiratory distress. You’ll hear and visualize how each state differs, including wheezing, pleural friction rub, inspiratory stridor, asthma-related wheezing, agonal breathing, and the final death rattle. This educational visualization highlights how lung sounds evolve from healthy function to life-threatening conditions. A

Ausmed Explains... 1. Stridor: Stridor is a continuous, high-pitched, crowing sound heard predominantly on inspiration. The cause of this sound is generally the partial obstruction of the larynx or trachea. Stridor may be heard in conditions such as croup and foreign body obstruction. It’s typically loudest over the anterior neck, as air moves turbulently over a partially-obstructed, upper airway. 2. Wheeze: The sound of a wheeze is a high-pitched, continuous musical sound. This is caused by air