Determinants of ventricular refractory periods in children with congenital heart disease: Effects of cycle length and age

Ashok V. Mehta, Grace S. Wolff, Dolores Tamer, Arthur S. Pickoff, Alfonso Casta, Otto L. Garcia, Henry Gelband

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Ventricular effective refractory periods (ERP) and functional refractory periods (FRP) were determined by programmed ventricular extrastimulation in 63 pediatric patients with a spectrum of congenital heart disorders. Of these 63 children (ages 8 months to 18 years), 38 were preoperative, 17 had repair of their cardiac lesion via right ventriculotomy, and eight were postoperative without a ventriculotomy. We demonstrated that there was a linear relationship between the cycle length and ventricular refractory periods. The regression equations 73 + 0.29 × cycle length (msec) for the ventricular ERP (msec) and 80 + 0.30 × cycle length (msec) for ventricular FRP (msec) were found to define the determined properties of ventricular refractory periods (VRP) in children. These VRP characteristics were independent of age in children less than 13 years of age.

Original languageEnglish (US)
Pages (from-to)75-79
Number of pages5
JournalAmerican Heart Journal
Volume102
Issue number1
DOIs
StatePublished - Jul 1981

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Determinants of ventricular refractory periods in children with congenital heart disease: Effects of cycle length and age'. Together they form a unique fingerprint.

Cite this