title: Frequency of early remodeling of left ventricle and its comparison between patients with stroke volume ≥97 Ml versus patients with stroke volume <97 Ml after aortic valve replacement for severe aortic regurgitation.
abstract: OBJECTIVE
  To evaluate the frequency of early remodeling in patients of severe aortic regurgitation after aortic valve replacement and to see the incidence of early remodeling in patients with stroke volume >97 ml versus < 97 ml before aortic valve replacement.
  
  
  METHODS
  This was a prospective comparative study conducted from August 2013 to December 2014 in a tertiary care hospital. Fifty seven (57) patients of isolated chronic aortic regurgitation were included in this study. SPSS v23 was used for data analysis. Independent sample t-test was used for analysis of continuous variables and chi-square test for qualitative variables.
  
  
  RESULTS
  Out of fifty seven patients, early remodeling occurred in 34 (59.64%) patients after surgery. The mean pre-operative stroke volume of patient in whom remodeling occurred was 110.3+9.66 ml while mean pre-operative stroke volume of patients who did not undergo remodeling was 86.65+7.63 ml. There were 28 (82.4%) patients with stroke volume >97 ml in whom Remodeling occurred where as in patients with stroke volume <97 ml remodeling occurred only in 6 (17.6%) patients (p value 0.004). There was no in-hospital mortality.
  
  
  CONCLUSIONS
  There is an association between stroke volume and early LV remodeling after Aortic valve replacement. Stroke volume >97 ml is a good predictor of early LV remodeling.
authors.affiliation: Hafiz Muhammad Farhan Ali Rizvi, FCPS CS. Senior Registrar Cardiac Surgery, Pakistan.
authors.forename: Hafiz Muhammad Farhan
authors.initials: HM
authors.lastname: Ali Rizvi
authors.affiliation: Zaigham Rasool Khalid, FCPS CS. Senior Registrar Pediatric Cardiac Surgery, Pakistan.
authors.forename: Zaigham Rasool
authors.initials: ZR
authors.lastname: Khalid
authors.affiliation: Allah Baksh, FCPS CS. Senior Registrar Cardiac Surgery, Pakistan.
authors.forename: Allah
authors.initials: A
authors.lastname: Baksh
authors.affiliation: Mirza Ahmad Raza Baig, B.SC Hons., CPT. Clinical Perfusionist, Pakistan.
authors.forename: Mirza Ahmad
authors.initials: MA
authors.lastname: Raza Baig
keywords: Aortic Regurgitation; Aortic Valve Replacement; Left Ventricular Remodeling