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European Heart Journal 1985 6(4):335-341;
Copyright © 1985 by the European Society of Cardiology.
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© 1985 The European Society of Cardiology

Premature ventricular beats in healthy adult subjects 20 to 79 years of age

V. RASMUSSEN, G. JENSEN, P. SCHNOHR and J. FISCHER HANSEN

Department of Cardiology, Municipal Hospital of Copenhagen, and the Copenhagen City Heart Study, Medical Department B Rigshospitalet, Copenhagen, Denmark

Received 26 October 1984; revised 4 January 1985; .

V. Rasmussen, 14, Skovalleen, DK 2880 Bagsvaerd. Denmark.

Abstract

111 healthy subjects, 57 males and 54 females, 20–79 years of age, randomly selected among the participants of the Copenhagen City Heart Study were tested for ventricular ectopic activity using ambulatory 24-h ECG recording.One or more premature ventricular beats (PVBs) appeared in 68 subjects (61%), 35 males and 33 females (61% of each group). The prevalence of PVBs increased significantly with age: 31, 68 and 84% in the respective age groups: 20–39, 40–59 and 60–79 (P<0.05).

The number of PVBs per 24 h was <24 in 88 (79%), <300 in 105 (95%), and <500 in 107 (96%). More than 1000 PVBs per 24 h appeared in 3 (2.7%), one of whom had 11 669. The number of PV Bs per 24 h increased with age, but the increase was not statistically significant. The number of PV Bs per 100 000 recorded QRS-complexes did not differ significantly from the number of PV Bs per 24 h.

The number of PV Bs h-1 was highest in daytime, and apparently higher in males than in females. However, the difference between the two sexes was not statistically significant.

Multiform PV Bs appeared in 4 subjects, interpolated PV Bs in 2, a run of 5 PV Bs in 1, dropped beats in 3, two pauses of 1900 ms duration in 1, and several post-acceleration pauses of 1300 ms duration in 1.

Key Words: Ambulatory electrocardiography • premature ventricular beats • healthy adult subjects


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