Longterm result of standardized patch infundibuloplasty and its application to conotruncal repair in tetralogy of Fallot
Kurosawa, H.; Sugiyama, Y.; Imai, Y.
Kyobu Geka. Japanese Journal of Thoracic Surgery 43(8): 625-628
1990
ISSN/ISBN: 0021-5252 PMID: 2214453 Document Number: 358658
Longterm result more than 10 years of standardized patch infundibuloplasty which had started in 1974 was reviewed. Thirty four cases were categorized into three groups. Group A: patch infundibuloplasty less than 45% of RV length. Group B: patch infundibuloplasty more than 45%, Group C: non-cusped transannular patch. Group B had longer patch infundibulolasty than group A and C. RV/LV pressure ratio of group C was higher than that of group A and B. There was no significant difference in CTR. However, when the cases with CTR more than 55% were precisely compared, enlarged CTR was related to high RV pressure and pulmonary regurgitation in group C while it might result from residual shunt in group A and B. Although longterm result of standardized patch infundibuloplasty was good, even small pressure and volume load in RV should be avoided as much as possible. Based on this longterm result, the conotruncal repair has been introduced and its better longterm result would be expected.