DSSSB 12 August 2024
Nursing Foundation
Easy
Sounds heard while taking BP are known as:
Appeared in: DSSSB 12 August 2024
Explanation
- Korotkoff sounds are the specific series of sounds heard through a stethoscope when measuring blood pressure.
- These sounds are generated by the turbulent flow of blood as the pressure in the sphygmomanometer cuff is released.
- The first Korotkoff sound (Phase I) marks the systolic pressure, and the point where the sound disappears (Phase V) marks the diastolic pressure in adults.
- The term was first described by Russian surgeon Nikolai Korotkoff in 1905.
Why Other Options Were Wrong
- Option A: A murmur is an abnormal sound related to turbulent blood flow within the heart, typically across a heart valve, not the sounds heard during routine BP measurement in a peripheral artery.
- Option B: A bruit is an abnormal sound of turbulent blood flow heard over a peripheral artery, but it is a sign of pathology (like atherosclerosis) and is not the term for the normal sounds produced during BP measurement.
- Option D: A gallop is an abnormal heart rhythm featuring an extra heart sound (S3 or S4). It is auscultated over the heart and is associated with ventricular dysfunction, not blood pressure measurement.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of sounds auscultated during blood pressure measurement as background academic context rather than a clinical decision trigger.
- Accurate identification of Korotkoff sounds is a fundamental nursing skill essential for correct blood pressure measurement, which is vital for diagnosing and managing hypertension.
- Nurses must be aware of the 'auscultatory gap'—a temporary disappearance of sounds between Phase I and Phase II—which can lead to underestimation of systolic pressure if the cuff is not inflated high enough.
- What if? If a patient has a very weak pulse and Korotkoff sounds are inaudible, a nurse might need to use an ultrasonic Doppler device to detect blood flow or measure the systolic pressure by palpation, though this does not provide a diastolic reading.
How to Approach the Question
- First, identify the core of the question, which is asking for the specific medical term for sounds heard during blood pressure (BP) measurement.
- Analyze the options provided. All are terms for sounds heard during cardiovascular assessment.
- Recall or deduce the specific context for each term. Murmur and gallop are heart sounds. Bruit is an abnormal vessel sound.
- This leaves Korotkoff, which is the specific term associated with the procedure of taking blood pressure via auscultation.
- Confirm the choice by remembering that the first and last Korotkoff sounds correspond to systolic and diastolic pressures, respectively.
Concept Tested & Keywords
- Concept Tested: Identification of sounds auscultated during blood pressure measurement.
- Stem keywords: Sounds, BP, Blood Pressure
- Lead-in keywords: known as
- Negative lead-in flag: false
Question ID
QAcHnWCePExh3_qJh_OBVa
Reference Book
E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 28-30
E6 Physiology Ganong 27e Vol 2 Part 1 p. 90-92
E6 Physiology Guyton 4SAE Part 2A p. 13-15
Practise the full DSSSB 12 August 2024
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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