While instilling ear drops, the ear canal of an adult is straightened by pulling the pinna:

Appeared in: UP CHO - 2018

Explanation

In adults and children over 3 years old, the external auditory canal has a distinct S-shape, curving upwards.
Pulling the pinna (the outer ear) up and back straightens this canal.
This maneuver ensures that the ear drops flow directly towards the tympanic membrane (eardrum) for maximum therapeutic effect.
Without this step, the medication may pool in the outer part of the canal and not reach the intended site.

Option A: This technique is incorrect for adults. It would fail to straighten the upward curve of the adult ear canal, impeding medication flow.
Option C: Pulling the pinna straight down is an incorrect maneuver for any age group and would not straighten the auditory canal effectively.
Option D: Pulling the pinna only straight back is insufficient to straighten the S-shaped curve of the adult ear canal. The upward pull is essential.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Procedure for Ear Drop Instillation as background academic context rather than a clinical decision trigger.
Correct administration technique is crucial for medication efficacy. If the canal is not straightened, the medication will not reach the middle or inner ear structures, rendering the treatment ineffective.
Patient safety is a key concern. Instilling cold drops can cause a vestibular reaction, leading to severe dizziness, vertigo, and nausea. Always warm the drops to body temperature before administration.
What if? If the patient were a 2-year-old child, the correct technique would be to pull the pinna down and back to straighten their differently shaped ear canal.

How to Approach the Question

First, identify the core task in the question: 'instilling ear drops'.
Next, identify the specific patient population: 'an adult'. This is the most critical piece of information.
Recall the standard nursing procedures for medication administration, specifically noting that techniques can vary by age.
Differentiate the procedure for an adult from that for a child. The adult ear canal curves up, while a child's is more horizontal or curves down.
Based on this anatomical difference, select the option that correctly straightens the adult ear canal: pulling 'up and back'.

Concept Tested & Keywords

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E6 Nursing Fundamentals Taylor p. 867-869

E6 Pharmacology Nursing Lilley 11e Part 1 p. 146-148

Practise the full UP CHO - 2018

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