RT Journal Article SR Electronic T1 Transcatheter closure of perimembranous ventricular septal defect: is the risk of heart block too high a price? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 284 OP 286 DO 10.1136/hrt.2006.103671 VO 93 IS 3 A1 Ian D Sullivan YR 2007 UL http://heart.bmj.com/content/93/3/284.abstract AB The late development of heart block in paediatric patients following device closure of a perimembranous ventricular septal defect may be a cause for concern. See article on page 355.