Why the study?
Do VPC characteristics (such as coupling interval and Lown grade) predict cardiac death or spontaneous regression in patients with frequent VPCs?
Population
100 patients with frequent (> 1,000 beats/day) ventricular premature contractions (VPCs)
Design
Cohort
Follow-up
4 years
Authors
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May flag higher-risk idiopathic VPCs for monitoring; leaves open whether coupling intervals or Lown grade should guide management.
Do VPC characteristics (such as coupling interval and Lown grade) predict cardiac death or spontaneous regression in patients with frequent VPCs?
In patients with frequent VPCs, longer and more varied coupling intervals may predict a poor prognosis, while Lown grade 2 may predict spontaneous regression.
Fujimoto et al. (1994) studied this question.
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