An error in measuring blood pressure may result because of which of the following?

GMCH Chandigarh - 2022

Nursing Foundation

Easy

Appeared in: GMCH Chandigarh - 2022

Explanation

All the options provided are well-documented sources of error in blood pressure measurement.
Using an incorrect cuff size, improper arm positioning relative to the heart, and applying excessive stethoscope pressure can all lead to inaccurate readings.
Since options A, B, and C are all valid causes of error, the most comprehensive and correct answer is that any of these can result in an error.

Option A: This option is a correct statement but is not the only cause of error. While wrong cuff size or position does cause errors, other factors also contribute.
Option B: This is a correct statement but is incomplete. Positioning the arm above or below heart level is a common error, but it is not the only one.
Option C: This is a correct statement but is not the sole cause of error. Pressing the stethoscope too firmly can alter diastolic readings, but other errors are also common.

Visual 1: Diagram - An infographic illustrating the correct technique for blood pressure measurement, including proper cuff sizing (bladder width 40% and length 80% of arm circumference), arm supported at heart level, and correct stethoscope placement.
Visual 2: Chart - A comparative chart showing common errors (e.g., cuff too small, arm below heart) and the resulting effect on the BP reading (falsely high or falsely low).

Clinical Relevance

Nursing practice connection: Knowing Accuracy in blood pressure measurement helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Accurate blood pressure measurement is critical for diagnosing and managing hypertension, assessing cardiovascular risk, and making decisions about medication.
Inaccurate readings can lead to under-treatment of hypertension (risking organ damage) or over-treatment (risking hypotension, falls, and unnecessary side effects).
What if? A patient's reading is 138/88 mmHg, which is Stage 1 Hypertension. If the nurse used a cuff that was too small, the patient's true BP might be normal. Re-measuring with the correct cuff size is essential before documenting hypertension or initiating treatment.

How to Approach the Question

First, read the question stem carefully to identify the core concept: 'error in measuring blood pressure'.
Next, evaluate each option (A, B, and C) independently to determine if it is a valid cause of error.
Recognize that using the wrong cuff size (A), incorrect arm position (B), and improper stethoscope pressure (C) are all well-known sources of error in BP measurement.
Since multiple options are factually correct, look for a composite option like 'All of the above' or 'Any of these'.
Conclude that option D is the most complete and accurate answer because it encompasses all the valid points listed in the other options.

Concept Tested & Keywords

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