Key result
Spontaneous paroxysmal supraventricular tachycardia in clinically healthy subjects exhibited circadian rhythmicity with a higher incidence in the morning-afternoon hours and an afternoon peak.
Why the study?
Is there a circadian variation in the occurrence of spontaneous paroxysmal supraventricular tachycardia (PSVT) in clinically healthy subjects?
Population
177 drug-free subjects with spontaneous paroxysmal supraventricular tachycardia and no previous history or…
Design
Cross-sectional
Authors
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Suggests time-of-day awareness in PSVT evaluation; extends circadian arrhythmia data but remains hypothesis-generating and should not change practice.
Observational (n=177)
No
Is there a circadian variation in the occurrence of spontaneous paroxysmal supraventricular tachycardia (PSVT) in clinically healthy subjects?
Spontaneous paroxysmal supraventricular tachycardia exhibits a circadian rhythm with an afternoon peak in clinically healthy subjects, suggesting intrinsic electrical instability fluctuations independent of underlying cardiopulmonary disease.
Manfredini et al. (1995) conducted an observational in Paroxysmal supraventricular tachycardia (PSVT) (n=177). Time of day (circadian variation) was evaluated on Circadian distribution of spontaneous paroxysmal supraventricular tachycardia (PSVT) symptom onset. Spontaneous paroxysmal supraventricular tachycardia in clinically healthy subjects exhibited circadian rhythmicity with a higher incidence in the morning-afternoon hours and an afternoon peak.
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