Qualified Medication Aides (QMA) Practice Exam

What vital sign should you check before administering a cardiotonic?

1. Blood pressure

2. Respiratory rate

3. Pulse rate

4. Temperature

The correct answer is: Pulse rate

The pulse rate is the vital sign that should be checked before administering a cardiotonic because cardiotonics, such as digoxin, primarily affect the heart's contractility and rhythm. These medications are often used for conditions like heart failure or certain arrhythmias, and they can significantly influence heart rate. A baseline pulse rate provides essential information about the patient's heart function and can help identify any concerns regarding bradycardia (a slow heart rate) or other arrhythmias that might contraindicate the administration of the medication. If the pulse rate is below a certain threshold, typically around 60 beats per minute, the healthcare provider may hold the medication to prevent adverse effects such as worsening bradycardia or potential toxicity. While blood pressure, respiratory rate, and temperature are important vital signs and can provide additional context for the patient's overall health, the pulse rate is particularly critical in this situation as it directly relates to the action and safety of cardiotonics.