A Wiggers diagram is a graphical representation of the cardiac cycle, illustrating the relationship between various physiological parameters during one complete heartbeat. Named after the physiologist Carl J. Wiggers, the diagram is particularly useful for understanding how the electrical events of the heart (represented by the electrocardiogram, or ECG) correlate with mechanical events (like heart muscle contractions), as well as blood pressures in different chambers of the heart and vascular system.
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