1. A medical technique that measures changes in the volume of a body part or organ to assess blood flow, air movement, or other physiological functions.
Usage: technical; medical

Examples

• The doctor ordered plethysmography to evaluate the patient's circulation in the legs.
• Plethysmography is commonly used to diagnose deep vein thrombosis.
• The test uses plethysmography to measure how well blood flows through the arteries.
• Pulmonary plethysmography helps assess lung function and breathing patterns.
• The technician performed plethysmography by placing sensors on the patient's limb to detect volume changes.