For the management of nocturnal angina, nitroglycerine (NTG) tablet given at?

NORCET -4 , 2023

Pharmacology

Medium

Appeared in: NORCET -4 , 2023

Explanation

Nocturnal angina specifically occurs at night, so medication must provide coverage during sleeping hours.
Administering long-acting nitroglycerin at bedtime ensures peak therapeutic levels are present overnight, preventing ischemic episodes.
This timing aligns with the principle of matching drug administration to the patient's symptom pattern.
The goal is to maintain coronary vasodilation and reduce cardiac preload throughout the night.

Option A: Giving the tablet in the 'evening' is imprecise and may be too early. The drug's effect could diminish by the early morning, a common time for nocturnal episodes.
Option C: Morning administration would leave the patient unprotected at night, which is when nocturnal angina occurs.
Option D: Nitrate therapy requires strategic timing to be effective and to prevent the development of drug tolerance. Random administration is ineffective and inappropriate.

Visual 1: Diagram: A 24-hour timeline comparing drug administration schedules for nocturnal vs. exertional angina. It would show the NTG dose at bedtime for nocturnal angina with a daytime nitrate-free interval, and the opposite for exertional angina.
Visual 2: Flowchart: A decision-making tree for nitrate scheduling based on the type of angina (exertional, nocturnal, variant) to determine the optimal time for administration and the nitrate-free period.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pharmacological management of nocturnal angina as background academic context rather than a clinical decision trigger.
A key nursing responsibility is to assess the patient's pattern of angina to ensure correct medication scheduling. Incorrect timing can lead to breakthrough pain and hospital readmission.
Patient education is crucial. The nurse must explain the rationale for the specific timing and the importance of the nitrate-free interval to ensure adherence and prevent tolerance.
What if? If a patient with nocturnal angina also starts experiencing exertional angina during the day, their therapy may need to be adjusted. This could involve adding other anti-anginal agents like beta-blockers or calcium channel blockers, rather than just changing the nitrate timing, to provide 24-hour coverage without losing the nitrate-free interval.

How to Approach the Question

First, identify the core of the question: it asks for the correct timing of a prophylactic medication (NTG tablet) for a specific condition (nocturnal angina).
Recall the meaning of 'nocturnal': it means occurring at night.
Connect the timing of the symptom with the timing of the treatment. Prophylactic medication should be active when the symptom is expected to occur.
Therefore, for chest pain that happens at night, the medication should be given before night, which is bedtime.
Evaluate the other options. 'Morning' is for daytime symptoms (exertional angina). 'At any time' is incorrect for prophylactic therapy. 'Evening time' is less precise than 'bedtime' for overnight coverage.

Concept Tested & Keywords

Q9wOg-PchaRMzd-J_E6_Xc