What is the classical sign of obstructive sleep apnea?

Appeared in: RRB Nsg. Superintendent-20 July 2019 (Shift-2)

Explanation

Snoring is the correct answer as it is the most common and classical 'sign' of Obstructive Sleep Apnea (OSA).
A sign is an objective finding. Snoring is an audible, physical manifestation of the partial airway obstruction that defines OSA.
The sound is produced by the vibration of soft tissues in the pharynx as air struggles to pass through the narrowed passage.
Textbooks often refer to the '3S's' of OSA: Snoring, Sleepiness, and Significant-other report of apnea, with snoring being the key observable sign.

Option A: Sleep deprivation is a general consequence of many sleep disorders, including OSA, but it is not the specific, classical sign of the airway obstruction itself.
Option B: Hypersomnia (excessive daytime sleepiness) is the most common 'symptom' of OSA, not a 'sign'. A symptom is a subjective experience reported by the patient, whereas a sign is an objective finding.
Option D: Narcolepsy is a completely different primary sleep disorder characterized by excessive sleepiness and cataplexy. It is not a sign or symptom of OSA.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differentiating the classical sign from symptoms and consequences of Obstructive Sleep Apnea (OSA) as background academic context rather than a clinical decision trigger.
A nurse's assessment for OSA often relies on interviewing the patient's bed partner, as they are the ones who witness the loud snoring and apneic episodes.
Recognizing the difference between signs (snoring) and symptoms (sleepiness) is crucial for accurate patient assessment and documentation.
Untreated OSA is a major risk factor for hypertension, myocardial infarction, and stroke. Therefore, screening for signs like snoring is a critical patient safety intervention.

How to Approach the Question

First, identify the keywords in the question: 'classical sign' and 'obstructive sleep apnea'.
Understand the critical difference between a 'sign' and a 'symptom'. A sign is objective (can be observed, e.g., snoring, rash), while a symptom is subjective (reported by the patient, e.g., pain, sleepiness).
Evaluate each option based on this distinction.
Snoring is an audible, objective event caused by airway obstruction.
Hypersomnia and sleep deprivation are subjective feelings or consequences reported by the patient.
Narcolepsy is a different diagnosis entirely.

Concept Tested & Keywords

Concept Tested: Differentiating the classical sign from symptoms and consequences of Obstructive Sleep Apnea (OSA).
Stem keywords: classical sign, obstructive sleep apnea
Lead-in keywords: What is

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E6 Nursing Brunner Adult Health 3SA Vol 2 Part 1 p. 41-43

E6 Physiology Guyton 4SAE Part 2A p. 137-139

Practise the full RRB Nsg. Superintendent-20 July 2019 (Shift-2)

Attempt every question from this paper in a timed mock, then review the full solution for each one.