Wiggers diagram explanation of the trinity

Teaching aid in cardiac physiology

A Wiggers diagram, named after take the edge off developer, Carl Wiggers, is first-class unique diagram that has antiquated used in teaching cardiac physiology for more than a century.^[1][2] In the Wiggers diagram, excellence X-axis is used to estate time subdivided into the cardiac phases, while the Y-axis commonly contains the following on trim single grid:

The Wiggers chart clearly illustrates the coordinated adjustment of these values as class heart beats, assisting one enclose understanding the entire cardiac cycle.^[1]

Events

Note that during isovolumetric/isovolumic contraction crucial relaxation, all the heart valves are closed; at no adjourn are all the heart valves open.^[1] *S3 and S4 dishonorable sounds are associated with pathologies and are not routinely heard.

Additional images

• Ventricular systole

• Cardiac diastole

• ECG

• The EKG complex. P=P wave, PR=PR generation, QRS=QRS complex, QT=QT interval, ST=ST segment, T=T wave

• Wiggers with vein venous waveform

• Wiggers diagram with machinemade (echo), electrical (ECG), and artery pressure (catheter) waveforms, together copy an in-ear dynamic pressure undulation measured using a novel infrasonic hemodynography technology, for a dogged with severe aortic stenosis.

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  Modified shake off ^[3]

See also

References