Dose of Adrenaline in one ampule?

Appeared in: SGPGI Nursing Officer-2024

Explanation

A standard ampule of Adrenaline (Epinephrine) contains 1 mg of the drug.
This 1 mg is typically dissolved in 1 mL of solution, resulting in a 1:1000 concentration.
This 1:1000 concentration is primarily intended for intramuscular (IM) use, such as in cases of anaphylaxis.
The total content of the ampule is 1 mg, from which specific doses (like 0.5 mg) may be drawn and administered.

Option A: 1 mg is not the total content of a standard ampule. It is the amount of adrenaline in 1 mL of a 1:10,000 solution.
Option B: 5 mg is a common administered dose for an adult, but it is not the total amount contained within a standard 1 mL ampule.
Option D: Standard adrenaline ampules contain 1 mg, not 2 mg. The 1:10,000 concentration is used for IV administration, but it is typically prepared by diluting a 1 mg/1 mL ampule to a total volume of 10 mL.

Clinical Relevance

Nursing practice connection: Knowing Standard dosage and concentration of Adrenaline (Epinephrine) in an ampule helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Administering the wrong concentration of adrenaline can be fatal. Giving a 1:1000 solution intravenously instead of intramuscularly can cause life-threatening hypertension and cardiac arrhythmias.
The principle of 'double-checking' high-alert medications like adrenaline with another nurse is a critical patient safety measure to prevent medication errors.
In the Indian context, it is vital for nurses in all settings, from primary health centres to tertiary care hospitals, to be proficient in identifying and preparing the correct adrenaline concentration for emergencies like anaphylaxis and cardiac arrest.

How to Approach the Question

First, identify the core of the question, which is asking for the total amount of drug in a standard container ('one ampule').
Recognize that 'Adrenaline' (Epinephrine) is a high-alert medication with different standard concentrations for different uses.
Recall the standard preparation of adrenaline. The most common ampule contains 1 mg in 1 mL (1:1000).
Differentiate between the total content of the ampule and a single administered dose. The question asks for the total content.
Evaluate the options. '1 mg' matches the standard total content. The other options represent administered doses (0.5 mg), doses from a different concentration (0.1 mg), or an incorrect amount (2 mg).

Concept Tested & Keywords

Concept Tested: Standard dosage and concentration of Adrenaline (Epinephrine) in an ampule.
Stem keywords: Dose, Adrenaline, ampule
Lead-in keywords: BEST, MOST RELEVANT CLUE

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E6 Medicine Davidson Principles Practice 24e p. 224-226

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1419-1421

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