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A Wiggers diagram modified from [1]. A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century.
A pulse pressure is considered abnormally low if it is less than 25% of the systolic value. [2] If the pulse pressure is extremely low, i.e. 25 mmHg or less, it may indicate low stroke volume, as in congestive heart failure. [3] The most common cause of a low (narrow) pulse pressure is a drop in left ventricular stroke volume.
The pulse is the rate at which the heart beats while pumping blood through the arteries, recorded as beats per minute (bpm). [11] It may also be called "heart rate". In addition to providing the heart rate, the pulse should also be evaluated for strength and obvious rhythm abnormalities. [11] The pulse is commonly taken at the wrist (radial ...
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An example of this phenomenon is measurement of blood pressure using the "pulse obliteration method" with a sphygmomanometer. At resting state the arterial critical closing pressure is ~ 20 mmHg. Critical closing pressure in arteries is higher than the mean vascular filling pressure that develops after death (~7 mmHg).
In order to correct for an auscultatory gap, the radial pulse should be monitored by palpation. [3] It is therefore recommended to palpate and auscultate when manually recording a patient's blood pressure. [3] Typically, the blood pressure obtained via palpation is around 10 mmHg lower than the pressure obtained via auscultation.
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