Question:medium
An alternative drug for cardiac arrest in place of epinephrine is:
An alternative drug for cardiac arrest in place of epinephrine is:
Show Hint
Look for a non-adrenergic vasopressor that constricts vessels via V1 receptors.
Updated On: Jun 24, 2026
- Amiodarone infusion
- Atropine
- High dose vasopressin
- Adenosine
Show Solution
The Correct Option is C
Solution and Explanation
Step 1: The drug that substitutes for adrenaline in an arrest must also clamp down blood vessels to push blood to the heart and brain.
Step 2: Vasopressin fits because it constricts vessels through V1 receptors without needing the adrenergic pathway, and guidelines allow one 40 unit dose to stand in for a dose of epinephrine in pulseless arrest.
Step 3: The other choices fail the job: amiodarone steadies rhythm, atropine speeds a slow heart, and adenosine slows the AV node. Only vasopressin is a true vasopressor alternative.
\[\boxed{\text{High dose vasopressin}}\]
Step 2: Vasopressin fits because it constricts vessels through V1 receptors without needing the adrenergic pathway, and guidelines allow one 40 unit dose to stand in for a dose of epinephrine in pulseless arrest.
Step 3: The other choices fail the job: amiodarone steadies rhythm, atropine speeds a slow heart, and adenosine slows the AV node. Only vasopressin is a true vasopressor alternative.
\[\boxed{\text{High dose vasopressin}}\]
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