The Wiggers family name originated in Derbyshire, specifically in Brampton, during the reign of king Edward III. Although the Saxon influence on English history waned after the Battle of Hastings in 1066, it persisted in a few places, including Derbyshire. Wiggers first appeared in records in 1328, in Brampton, Derbyshire.
The Wiggers diagram is a useful tool for teaching cardiac physiology. It depicts the various changes in the heartbeat and provides a visual representation for novice learners. It also provides instructors with the opportunity to introduce concepts and theories in an easily-understood format. For example, by plotting arterial blood flow and blood pressure versus time, a physician can review the cardiac cycle’s health in a patient.
The Wiggers diagram shows the pressures in the aorta, the left atrium, and the ventricles, as well as the volume of each chamber. It also displays the electrocardiogram. Changes in the electrocardiogram and diastolic blood pressure can indicate the presence of atrial fibrillation.
In contrast to Wiggers’ diagrams, the waveforms in real patients do not follow the same pattern. They vary in timing, and the actual cardiac events will occur at different times. Ultimately, the timing depends on the pressures in the chambers and aorta. If the pressure is too high in diastole, the aortic valve will close too early. Conversely, if the pressure is too low in diastole, the aortic valve will open late.