paroxysmal
Pronunciation: par-ok-SIZ-mal
Describing arrhythmias that occur in sudden, intermittent episodes with abrupt onset and termination.
Full Definition
In arrhythmia management, paroxysmal refers to rhythm disturbances that occur in sudden, unpredictable episodes characterized by abrupt onset and spontaneous termination. These episodes are typically brief, lasting from seconds to hours, and occur intermittently with normal rhythm periods in between. Paroxysmal arrhythmias, such as paroxysmal atrial fibrillation or paroxysmal supraventricular tachycardia, can be challenging to diagnose due to their intermittent nature and often require extended monitoring for detection. The term contrasts with persistent or permanent arrhythmias that are continuously present.
Usage
Usage note: Often confused with 'proximal' in medical transcription; ensure correct spelling and context.
In Context
- "The patient experienced paroxysmal atrial fibrillation with episodes lasting 2-6 hours." — Clinical documentation
- "Event monitoring captured three episodes of paroxysmal supraventricular tachycardia over two weeks." — Diagnostic report