Which of the following tools is commonly used to assess the severity of asthma in clinical settings?

BTSC Staff Nurse 1 August-2025

Medical Surgical Nursing

Easy

Appeared in: BTSC Staff Nurse 1 August-2025

Explanation

Peak Expiratory Flow Rate (PEFR) directly measures the maximum speed of air exhaled from the lungs, which reflects the degree of airway obstruction.
In asthma, narrowed airways lead to a decreased PEFR, making it a key indicator of disease severity and control.
The device shown in the image is a peak flow meter, which is specifically used to measure PEFR.
Regular monitoring of PEFR allows patients to track their condition, identify triggers, and follow their asthma action plan, especially noting when values fall into the 'Yellow' or 'Red' zones.

Option A: The Glasgow Coma Scale assesses neurological function, specifically the level of consciousness, not respiratory function.
Option B: The Apgar Score is a rapid assessment tool for newborns immediately after birth.
Option D: The Braden Scale is used to assess a patient's risk for developing pressure injuries (bedsores).

Clinical Relevance

Nursing practice connection: Knowing Assessment of Asthma Severity helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses are central to patient education on asthma management. This includes teaching the correct technique for using a peak flow meter, how to record readings, and how to interpret them according to their personalized asthma action plan.
Empowering patients with the skill of self-monitoring PEFR promotes autonomy and early intervention, which can significantly reduce emergency room visits and hospitalizations for asthma exacerbations.
What if? If the patient were a child under 5, reliable PEFR measurement would be difficult. In that case, a nurse would assess asthma severity based on clinical signs like respiratory rate, use of accessory muscles, audible wheezing, and oxygen saturation via pulse oximetry.

How to Approach the Question

First, identify the core concept of the question, which is finding a tool to assess 'asthma severity'.
Next, carefully examine the image provided. Recognize the device as a handheld peak flow meter, which is used for respiratory measurements.
Evaluate each option based on its known clinical use.
Eliminate the Glasgow Coma Scale (neurological assessment), Apgar Score (newborn assessment), and Braden Scale (pressure ulcer risk).
Connect the remaining option, Peak Expiratory Flow Rate (PEFR), with the function of the device in the image and its relevance to asthma (an obstructive airway disease).
Conclude that PEFR is the correct tool for monitoring airflow obstruction and thus, asthma severity.

Concept Tested & Keywords

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E6 Nursing Fundamentals Taylor p. 720-722

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 59-61

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1405-1407