Initial dose of atropine in bradycardia is?

Appeared in: SGPGI Nursing Officer-2023

Explanation

The current Advanced Cardiovascular Life Support (ACLS) guideline recommends an initial dose of 1 mg of atropine for adult symptomatic bradycardia.
This dose is administered as a rapid IV bolus.
The 1 mg dose can be repeated every 3-5 minutes as needed.
The total cumulative dose should not exceed 3 mg.

Option A: This is an outdated dose. Previous guidelines recommended 0.5 mg, and doses below this can paradoxically slow the heart rate. The current standard is 1 mg.
Option C: An initial dose of 2 mg is higher than the standard ACLS protocol for bradycardia.
Option D: This dose is not the standard initial dose for bradycardia according to current ACLS guidelines.

Clinical Relevance

Nursing practice connection: Knowing Pharmacological management of symptomatic bradycardia in adults helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Recognizing symptomatic bradycardia (e.g., hypotension, altered mental status, signs of shock) is a critical nursing skill that triggers immediate intervention.
Nurses must be prepared to administer atropine quickly and monitor for its effects (increase in heart rate) and potential side effects.
A key nursing responsibility is anticipating the failure of atropine and preparing for second-line therapies like transcutaneous pacing to ensure no delay in treatment.

How to Approach the Question

First, identify the core of the question, which is asking for a specific drug dosage for a specific condition: the 'initial dose' of 'atropine' for 'bradycardia'.
This is a factual recall question that relies on knowledge of established clinical guidelines, specifically the ACLS protocol.
Recall the standard ACLS algorithm for adult bradycardia.
The first-line drug is atropine. Remember the specific dose: 1 mg IV.
Evaluate the options provided. Select the option that matches the current guideline (1 mg).
Eliminate other options by recalling why they are incorrect: 0.6 mg is an outdated dose, and higher doses like 1.5 mg or 2 mg are used for toxicology, not routine bradycardia.

Concept Tested & Keywords

Concept Tested: Pharmacological management of symptomatic bradycardia in adults.
Stem keywords: atropine, bradycardia, initial dose
Lead-in keywords: BEST, MOST RELEVANT CLUE
Negative lead-in flag: false

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E6 Pharmacology Katzung 16e p. 1618-1620

Practise the full SGPGI Nursing Officer-2023

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