A medical assistant is taking vital signs and documents a resting adult pulse of 52 beats per minute. The provider asks the assistant to label the finding using correct medical terminology. Which term BEST describes this rate?
- ATachycardia, because the prefix tachy- means fast and the rate falls below the adult reference range.
- BHypertension, because hyper- means above normal and the value lies outside the reference range.
- CArrhythmia, because any value outside 60 to 100 beats per minute means the rhythm is irregular.
- DBradycardia, because the prefix brady- means slow and 52 beats per minute is below the adult reference range. Correct
Why A is wrong: Tachy- does mean fast, but 52 beats per minute is below the normal adult range of 60 to 100, not above it. The prefix is correct in meaning but mismatched to the finding.
Why B is wrong: Hyper- does mean above normal, but -tension refers to pressure, not heart rate. The pulse measurement does not describe blood pressure, so this term is the wrong category.
Why C is wrong: Arrhythmia means an irregular rhythm, which is a separate concept from rate. A slow rate can still be perfectly regular, so the prefix a- (without) plus rhythm does not apply solely on the basis of the count.
Why D is correct: Brady- means slow and -cardia refers to the heart, so bradycardia is the correct label for an adult resting rate under 60 beats per minute. The documented rate of 52 fits this definition.