# A 35-year-old client in stable narrow-complex supraventricular tachycardia (HR 192) is ordered adenosine 6 mg IV rapid push after vagal maneuvers fail. Which set of nursing actions reflects correct technique and safety?

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> language: en  
> subject: Adverse Effects/Contraindications/Interactions  
> category: PA

## Question

A 35-year-old client in stable narrow-complex supraventricular tachycardia (HR 192) is ordered adenosine 6 mg IV rapid push after vagal maneuvers fail. Which set of nursing actions reflects correct technique and safety?

## Option

1. Use a peripheral IV in the hand without a stopcock; inject the adenosine over 30-60 seconds and follow with a slow saline flush over 2 minutes; reassure the client that the rhythm will convert without any noticeable sensations; monitor cardiac rhythm but do not need emergency equipment because the drug is short-acting.
2. Use the antecubital or other large proximal IV with a stopcock; push the adenosine over 1-2 seconds and immediately follow with a 20 mL normal saline flush; warn the client of brief chest tightness, flushing, or a sense that the heart "stops"; have continuous ECG, BP, and resuscitation equipment ready. **✔ Correct answer**
3. Dilute the adenosine in 250 mL of D5W and administer as a continuous IV infusion over 30 minutes using a pump; explain that the gradual effect will avoid any unpleasant transient side effects; document rhythm changes every 15 minutes and have emergency equipment at the bedside.
4. If IV access is not functioning, administer adenosine 12 mg intramuscularly into the deltoid muscle; explain that the drug may take several minutes to act and may cause local pain; monitor the cardiac rhythm and blood pressure every 5 minutes and document the injection site.

**Correct answer: 2**

## Explanation

Adenosine — pharmacology and administration technique
Adenosine causes brief AV-node block (a few seconds of asystole) that interrupts re-entry SVT and restores sinus rhythm. Its half-life is

## In-depth explanation

Clinical reasoning summary
Adenosine — pharmacology and administration technique
Adenosine causes brief AV-node block (a few seconds of asystole) that interrupts re-entry SVT and restores sinus rhythm. Its half-life is

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