Collapsing pulse is also known as?

UPRVUNL - 2021

Medical Surgical Nursing

Easy

Appeared in: UPRVUNL - 2021

Explanation

A collapsing pulse is defined by its unique characteristic of a rapid, forceful upstroke followed by an equally rapid and sudden fall-off.
This specific pulse character is medically known by the synonyms 'Water hammer pulse' or 'Corrigan's pulse'.
It is considered a classic physical examination finding for moderate to severe aortic regurgitation, where blood leaks back into the left ventricle, causing a wide pulse pressure.

Option A: Bigeminal pulse describes a disturbance in heart rhythm, not the character or quality of the pulse wave. It refers to a pattern of a normal beat followed by a premature beat, creating a 'paired' rhythm.
Option B: Pulsus alternans is a beat-to-beat variation in the amplitude (strength) of the pulse, with alternating strong and weak beats, while the rhythm remains regular. This is different from the sudden collapse of a water-hammer pulse.
Option D: While a water-hammer pulse is a type of high-volume pulse, 'bounding pulse' is a more general term for any pulse that feels strong and full. It lacks the specific 'collapsing' quality.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Synonyms and characteristics of arterial pulse abnormalities as background academic context rather than a clinical decision trigger.
Identifying a water-hammer pulse is a critical nursing assessment skill. It strongly suggests significant aortic regurgitation, a condition that requires prompt medical evaluation and further diagnostic tests like an echocardiogram.
A nurse who detects a new-onset collapsing pulse must report this finding to the physician immediately, as it can indicate a hemodynamically significant and potentially worsening valvular heart lesion.
What if? If the pulse felt weak and had a delayed upstroke (pulsus parvus et tardus), the nurse should suspect severe aortic stenosis, which is an obstruction to outflow, rather than the backflow seen in regurgitation.

How to Approach the Question

First, identify the key term in the question stem, which is 'Collapsing pulse'.
Recognize that the question is asking for a synonym ('also known as'), which is a test of factual recall.
Access your knowledge of cardiovascular assessment and the different named pulse characteristics.
Mentally define 'collapsing pulse': a pulse with a rapid upstroke and an even more rapid, sudden fall.
Compare this definition to the options provided. 'Water hammer pulse' is the direct synonym for this finding.
Eliminate the other options by recalling their definitions: 'Bigeminal pulse' is a rhythm issue, 'Pulsus alternans' is about alternating amplitude, and 'Bounding pulse' is a general term for a strong pulse without the specific collapsing quality.

Concept Tested & Keywords

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E6 Medicine Macleod Clinical Examination 15e p. 61-63

E6 Medicine Harrison 22e Part 1 p. 1904-1906