Wiggers diagram

Wiggers Diagram

The Wiggers Diagram (pronounced: /ˈwɪɡərz/), named after Carl J. Wiggers, is a standard graphical representation in cardiology and physiology that illustrates the changes in pressure, volume, and electrical activity in the heart during a complete cardiac cycle.

Etymology

The Wiggers Diagram is named after Carl J. Wiggers, an American physiologist who made significant contributions to the understanding of cardiovascular dynamics.

Description

The Wiggers Diagram is a composite graph that includes several individual plots. These plots include the electrocardiogram (ECG), phonocardiogram (PCG), left ventricular pressure (LVP), aortic pressure (AoP), left atrial pressure (LAP), and left ventricular volume (LV Vol). Each of these plots corresponds to a specific aspect of the cardiac cycle.

Usage

The Wiggers Diagram is commonly used in medical and physiological education to illustrate the relationships between the different aspects of the cardiac cycle. It is particularly useful for understanding the timing of events in the heart, such as the opening and closing of the heart valves, and the changes in pressure and volume in the heart chambers.

Related Terms

• Cardiac Cycle
• Electrocardiogram
• Phonocardiogram
• Heart Valves
• Cardiology
• Physiology

External links

• Medical encyclopedia article on Wiggers diagram
• Wikipedia's article - Wiggers diagram

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