Which is the correct sequence for rabies post-exposure prophylaxis vaccine in an animal bite patient?

NORCET-7 Mains-2024

Pharmacology

Easy

Appeared in: NORCET-7 Mains-2024

Explanation

The schedule 0, 3, 7, 14, and 28 days represents the standard 5-dose intramuscular (IM) protocol known as the Essen regimen.
This regimen is recommended for post-exposure prophylaxis (PEP) in individuals who have not been previously vaccinated against rabies.
The doses are strategically timed to stimulate a rapid and robust immune response, aiming to neutralize the virus before it can cause fatal disease by reaching the central nervous system.
This schedule is endorsed by major health organizations, including the WHO, for its proven efficacy.

Option A: The standard 5-dose Essen regimen concludes on day 28. A day 90 dose is not part of this primary series.
Option B: This schedule is incorrect because it omits the crucial dose on day 3. The day 3 dose is vital for initiating an early immune response against the virus.
Option C: This schedule is highly ineffective as it misses two critical doses: day 3 and day 14. Both are essential for building and sustaining an adequate antibody response.

Visual 1: Infographic - A chart comparing different rabies post-exposure prophylaxis (PEP) schedules, including the Intramuscular (Essen, Zagreb) and Intradermal (Thai Red Cross) regimens. The chart should highlight the number of doses, administration sites, and days of administration for each.

Clinical Relevance

Nursing practice connection: Safe nursing care depends on performing Rabies post-exposure prophylaxis (PEP) vaccination schedules in the correct sequence, documenting the action clearly, and monitoring for the expected response.
Strict adherence to the PEP schedule is critical for preventing rabies, a disease with a case-fatality rate approaching 100%. Nurses are pivotal in administering the vaccine correctly, educating the patient on the importance of completing the series, and managing the bite wound.
What if? If a patient misses a scheduled dose, the series should be resumed, not restarted. For example, if the day 7 dose is missed and the patient presents on day 9, the nurse should administer the day 7 dose then and reschedule the next dose (day 14) accordingly after consulting with the physician. The schedule is continued to completion.

How to Approach the Question

First, identify the core of the question: it's asking for the correct vaccination schedule for rabies post-exposure prophylaxis.
Recognize this as a factual recall question based on established medical and public health protocols.
Examine the options provided. Note that they are all sequences of numbers representing days. The key differences lie in the specific days included (e.g., presence of day 3, day 28, day 90).
Recall the most common intramuscular (IM) regimen for rabies PEP, which is the 5-dose Essen regimen.
Compare the given options to the standard Essen schedule (days 0, 3, 7, 14, 28) to identify the exact match.

Concept Tested & Keywords

Concept Tested: Rabies post-exposure prophylaxis (PEP) vaccination schedules
Stem keywords: rabies, post-exposure prophylaxis, vaccine, animal bite, sequence
Lead-in keywords: correct sequence
Negative lead-in flag: false

QjeMaq-uTI1xy3brOf-zNr