title: Left ventricular remodeling and change of systolic function after closure of patent ductus arteriosus in adults: device and surgical closure.
abstract: BACKGROUND
  Left ventricular (LV) remodeling and predictors of LV systolic function late after closure of patent ductus arteriosus (PDA) in adults remain to be clearly demonstrated.
  
  
  METHODS
  In 45 patients with PDA, including 28 patients who received successful occlusion using the Amplatzer device (AD group) (AGA, Golden Valley, MN) and 17 patients who received surgical closure (OP group), echocardiography studies were performed before closure and 1 day (AD group) or within 7 days (OP group) after closure, and then were repeated at > or = 6 months (17 +/- 13 months).
  
  
  RESULTS
  In both groups, LV ejection fraction (EF) and end-diastolic volume index were significantly decreased immediately after closure, whereas end-systolic volume index did not change. During the long-term follow-up period, end-systolic as well as end-diastolic volume indices decreased significantly in both groups and LV EF recovered compared to the immediate postclosure state. However, LV EF remained low compared to the preclosure state. Five patients (11.1%) including 3 patients in the AD group and 2 patients in the OP group showed persistent late LV systolic dysfunction (EF <50%). In stepwise, multiple logistic regression analysis, preclosure EF was the only independent predictor of late normal postclosure EF (odds ratio, 1.230; 95% CI, 1.054-1.434; P = .008). Receiver operating characteristic curve analysis showed that preclosure EF > or = 62% had a sensitivity of 72% and a specificity of 83% for predicting late normal LV EF after closure.
  
  
  CONCLUSIONS
  Left ventricular EF remains low late after PDA closure compared with preclosure state in adults. Preclosure LV EF is the best index to predict late postclosure LV EF.
authors: Division of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
authors: Young-Hoon
authors: YH
authors: Jeong
authors: Tae-Jin
authors: TJ
authors: Yun
authors: Jong-Min
authors: JM
authors: Song
authors: Jung-Jun
authors: JJ
authors: Park
authors: Dong-Man
authors: DM
authors: Seo
authors: Jae-Kon
authors: JK
authors: Koh
authors: Se-Whan
authors: SW
authors: Lee
authors: Mi-Jeong
authors: MJ
authors: Kim
authors: Duk-Hyun
authors: DH
authors: Kang
authors: Jae-Kwan
authors: JK
authors: Song
mesh_terms: D000328:Adult; D006348:Cardiac Surgical Procedures / Q000295:instrumentation / Q000379:methods; D004374:Ductus Arteriosus, Patent / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D013599:Systole; D020257:Ventricular Remodeling