In 14 @entity1 undergoing transcatheter closure of a large (greater than 4 mm diameter) patent ductus arteriosus, @entity432 was attempted with use of the Bard @entity9009 . @entity1 age ranged from 0.7 to 30.4 years. Isolated patent ductus arteriosus was present in 11 @entity1 ; 3 had additional congenital heart lesions. Moderate or severe @entity120 was present in four @entity1 . The diameter of the patent ductus arteriosus ranged from 4.5 to 14 mm, as determined by contrast injection through an 11F sheath or by balloon sizing; it appeared larger by this method than by the standard angiographic method. All 14 patent ductus arteriosi were successfully closed. Prior embolization of a Rashkind umbrella was the reason for using a Clamshell device in three @entity1 ; one additional embolization of a Clamshell device occurred. All errant devices were retrieved at cardiac catheterization, without associated hemodynamic instability. No other complications occurred. Among the 14 @entity1 , 11 had complete ductal closure by Doppler color flow mapping at last follow-up and 3 had trivial residual flow. All four @entity1 having associated complex lesions or @entity120 , or both, had symptomatic improvement after the procedure, although one @entity1 (with @entity154 ) died 3 months later. The Clamshell device provides stable and effective closure of a large patent ductus arteriosus, and allows transcatheter closure to be offered to some @entity1 who were previously considered unsuitable for this procedure.

Transcatheter closure of a large patent ductus arteriosus with the XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'Patient', 'child'] @entity154 :: ('MESH:D000013', 'Disease') :: ["Shone's anomaly"] @entity9009 :: ('MESH:D018658', 'Disease') :: ['Clamshell septal umbrella'] @entity120 :: ('MESH:D006976', 'Disease') :: ['pulmonary hypertension'] @entity432 :: ('MESH:D001157', 'Disease') :: ['occlusion']
@entity9009 :: (MESH:D018658,Disease) :: ['clamshell septal umbrella']
