is the term used for slower heart in an adult, usually less than 60 BPM?

Appeared in: ESIC Nursing Officer 2016 (shift-1)

Explanation

Bradycardia is the correct medical term for a resting heart rate below 60 beats per minute (BPM) in an adult.
The normal resting heart rate for an adult ranges from 60 to 100 BPM.
This term specifically describes a slow heart rate, as opposed to a fast or irregular one.

Option A: Tachycardia refers to a fast heart rate, specifically a resting rate greater than 100 BPM in an adult.
Option B: Arrhythmia (or dysrhythmia) is a general term for any irregular heart rhythm. The heart rate can be slow, normal, or fast during an arrhythmia.
Option D: Mesocardia is not a term related to heart rate or rhythm. It is a rare congenital condition where the apex of the heart is located in the midline of the thorax.

Visual 1: ECG Strip Comparison - A diagram showing the difference in R-R intervals for Normal Sinus Rhythm (60-100 bpm), Sinus Bradycardia (less than 60 bpm), and Sinus Tachycardia (greater than 100 bpm). This helps visualize the rate differences.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition of Bradycardia as background academic context rather than a clinical decision trigger.
A key nursing responsibility is to differentiate between asymptomatic bradycardia (often benign, e.g., in athletes) and symptomatic bradycardia (which can indicate poor perfusion and requires intervention).
Always assess the patient first, not just the monitor. If a patient has a heart rate of 45 BPM but is alert, talking, and has a stable blood pressure, the situation is less urgent than a patient with the same heart rate who is dizzy and hypotensive.
What if? If the patient is an athlete with a resting heart rate of 50 BPM and is asymptomatic, this is likely a normal physiological adaptation due to a strong, efficient heart muscle and does not require intervention.

How to Approach the Question

This is a factual recall question that tests your knowledge of medical terminology.
First, identify the key information in the question: 'slower heart' and 'less than 60 BPM' in an 'adult'.
Define each option in your mind: Tachycardia (fast), Arrhythmia (irregular), Bradycardia (slow), Mesocardia (position).
Compare the definitions to the keywords in the question.
Bradycardia directly matches the definition of a slow heart rate (less than 60 BPM).
Eliminate the other options as they describe a fast rate, an irregular rhythm, or an anatomical position.

Concept Tested & Keywords

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