Ideal number of fully frozen ice packs contained in a vaccine carrier?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2021

Explanation

A standard vaccine carrier is designed to hold four fully frozen ice packs, with one placed against each of the four internal walls.
This configuration creates a stable environment, maintaining the required temperature of +2°C to +8°C, which is critical for vaccine efficacy.
This setup is standard for transporting 16-20 vaccine vials for outreach immunization sessions, as per national and international health guidelines.
The source text explicitly mentions placing ice packs against the 'four sides of the carrier'.

Option A: Two ice packs are used for a smaller 'day carrier', not a standard vaccine carrier.
Option C: Six is not a standard number of ice packs for any commonly used vaccine carrier or day carrier.
Option D: Eight is not the correct number of ice packs for a vaccine carrier.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Cold Chain Maintenance and Equipment as background academic context rather than a clinical decision trigger.
Nurses are directly responsible for maintaining the cold chain during immunization sessions. Using the correct number of ice packs is a fundamental part of this duty to ensure public health.
Failure to maintain the cold chain (a 'break') can render vaccines ineffective, leading to wasted resources and, more importantly, leaving individuals and communities unprotected against preventable diseases.
What if? If freeze-sensitive vaccines (like Pentavalent, TT, IPV) are being transported, the ice packs MUST be 'conditioned' first. Placing these vaccines against hard-frozen packs (at 0°C or below) can irreversibly destroy their potency, which is a critical patient safety error.

How to Approach the Question

This is a factual recall question based on standard immunization program guidelines.
First, identify the key terms in the question: 'vaccine carrier' and 'number of ice packs'.
Mentally differentiate between the types of portable cold chain equipment. The most common are the standard 'vaccine carrier' and the smaller 'day carrier'.
Recall the specific configuration for each. A standard vaccine carrier is designed for four ice packs.
Select the option that matches this standard number.

Concept Tested & Keywords

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E6 Comprehensive Textbook of Community Health Nursing for BSc Nursing Students Part 2 — Subpart B (pp 276-535 of 550) pp. 229-231, 228-230

Practise the full RUHS, Jaipur, M.Sc Nursing Entrance Exam-2021

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