Which of the following is the correct sequence of steps in conducting an auditory assessment?

A) Pure-tone audiometry, otoscopy, speech audiometry
B) Speech audiometry, otoscopy, pure-tone audiometry
C) Otoscopy, pure-tone audiometry, speech audiometry
D) Otoscopy, speech audiometry, pure-tone audiometry

Appeared in: MP NHM CHO-2024 (Shift-2)

Explanation

The correct sequence begins with a physical examination (otoscopy) to ensure the ear canal is clear and free from obstructions or pathology that could invalidate testing.
The second step is pure-tone audiometry, which establishes the fundamental hearing thresholds across a range of frequencies, providing a baseline audiogram.
The assessment concludes with speech audiometry, a functional test that evaluates the patient's ability to hear and understand spoken words, building upon the findings from the pure-tone test.

Option A: This sequence is incorrect because audiometry should never be performed before otoscopy. A blockage like cerumen (earwax) would cause a false conductive hearing loss on the audiogram.
Option B: This sequence is incorrect for the same reason as option A. A physical examination of the ear canal (otoscopy) must be the first step to ensure the pathway for sound is clear.
Option D: This sequence is not standard practice. Pure-tone audiometry is performed before speech audiometry because the pure-tone thresholds are used to determine the appropriate presentation levels for the speech tests.

Visual 1: Diagram - An illustration showing a healthcare provider using an otoscope to look into a patient's ear, highlighting the view of the tympanic membrane.
Visual 2: Chart - An example of a completed audiogram, with frequency (Hz) on the x-axis and hearing level (dB HL) on the y-axis, showing symbols for air and bone conduction.
Visual 3: Flowchart - A simple flowchart depicting the three steps in order: Otoscopy → Pure-Tone Audiometry → Speech Audiometry.

Clinical Relevance

Nursing practice connection: Safe nursing care depends on performing Sequence of Auditory Assessment in the correct sequence, documenting the action clearly, and monitoring for the expected response.
Adhering to the correct assessment sequence is critical for diagnostic accuracy. Skipping otoscopy can lead to misinterpreting a temporary, fixable problem (like earwax) as a more serious sensorineural hearing loss.
This sequence ensures efficient and logical data collection, where results from earlier, simpler tests inform the procedures for later, more complex tests.
What if? If otoscopy reveals a complete cerumen impaction, the nurse or audiologist must stop the assessment. The priority action changes to cerumen management (e.g., softening drops, irrigation, or manual removal). The audiometry tests are rescheduled for after the canal is clear.

How to Approach the Question

First, recognize that this is a process-based question asking for the correct order of clinical steps.
Apply the fundamental principle of any physical assessment: 'inspect before you test.' This immediately establishes that otoscopy (visual inspection) must be the first step, eliminating options A and B.
Next, compare the remaining options (C and D). Differentiate between pure-tone audiometry and speech audiometry. Pure-tone testing measures basic sensory ability (hearing tones), while speech testing measures a more complex cognitive function (understanding words).
In clinical testing, simpler, foundational tests are almost always performed before more complex, functional tests. Therefore, pure-tone audiometry should precede speech audiometry.
Combine these logical steps: Inspection (Otoscopy) → Basic Test (Pure-tone) → Complex Test (Speech). This confirms that sequence C is the correct answer.

Concept Tested & Keywords

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Practise the full MP NHM CHO-2024 (Shift-2)

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