Irregular heart rhythm is termed as?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2021

Explanation

Arrhythmia, also called dysrhythmia, is the correct medical term for any deviation from the normal rhythm of the heart.
It is caused by a malfunction in the heart's electrical conduction system.
This term encompasses rhythms that are too fast (tachycardia), too slow (bradycardia), or irregular in pattern.
The question asks for the general term for an irregular rhythm, making arrhythmia the most accurate and comprehensive answer.

Option A: Acceleration is a general physics term for an increase in the rate of change of velocity. It is not a specific medical term used to describe heart rhythm.
Option C: Bradycardia is a specific type of arrhythmia, not the general term. It exclusively refers to a heart rate that is too slow (less than 60 beats per minute).
Option D: Tachypnoea refers to abnormally rapid breathing, which is a sign related to the respiratory system, not the cardiovascular system's rhythm.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Cardiac Rhythm Terminology as background academic context rather than a clinical decision trigger.
Nurses must be able to accurately assess a patient's pulse for not just rate, but also rhythm and strength. An irregular rhythm is a key finding that must be reported.
Arrhythmias can range from harmless (e.g., occasional ectopic beats) to life-threatening (e.g., ventricular fibrillation). Prompt identification is crucial for patient safety.
The primary diagnostic tool for identifying and classifying an arrhythmia is the electrocardiogram (ECG).

How to Approach the Question

This is a factual recall question that tests your knowledge of medical terminology.
First, identify the key phrase in the question: 'Irregular heart rhythm'.
Define this phrase in your mind. It means any heartbeat that is not regular or normal.
Evaluate each option against this definition.
Eliminate options that are incorrect. 'Tachypnoea' relates to breathing. 'Acceleration' is a non-medical term in this context.
Differentiate between the remaining specific and general terms. 'Bradycardia' is a slow rhythm, which is a type of irregularity, but 'Arrhythmia' is the broad term for all types of irregularities.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 488-490

E6 Nursing Fundamentals Potter Perry 12e Part 4 p. 234-236

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