1. A graphic record or tracing produced by a plethysmograph, showing changes in the volume of a body part or organ over time.
Usage: medical; technical

Examples

• The doctor reviewed the plethysmogram to assess blood flow in the patient's leg.
• A plethysmogram can reveal abnormalities in vascular function.
• The plethysmogram showed increased volume changes during the exercise test.
• Technicians use plethysmograms to diagnose deep vein thrombosis.
• The plethysmogram provided objective data about the patient's circulatory response.