title: Left ventricular volume reduction surgery: The 4th International Registry Report 2004.
abstract: METHODS
  An international registry of left ventricular volume reduction (LVVR) procedures, including partial left ventriculectomy, has been expanded, updated, and refined to include 568 cases voluntarily reported from 52 hospitals in 12 countries.
  
  
  RESULTS
  Gender, age, ventricular dimension, ethnology, myocardial mass, presence or absence of mitral regurgitation, as well as transplant indication, had little effect on event-free survival, which was defined as either absence of death or ventricular failure requiring mechanical assist or transplantation. Poor preoperative patient condition such as New York Heart Association classification IV, depressed contractility and decompensation requiring an emergency procedure were associated with reduced event-free survival. Other risk factors included an early surgery date, lack of experience, dilated cardiomyopathy as the underlying pathology and extended myocardial resection. Performance of LVVR reached a peak by 1998, but was largely abandoned by 2001, except in Asia, where experienced institutes continue to perform it in patients in better condition with preserved myocardial contractility.
  
  
  CONCLUSIONS
  Avoidance of risk factors appears to have contributed to the recent survival improvement and may help stratify patients for LVVR. While performance has been decreasing, the concept has been extended to other LVVR and less invasive procedures, which are now under clinical trials.
authors.affiliation: Tokai University School of Medicine, Isehara, Japan. akira@is.icc.u-tokai.ac.jp
authors.forename: Akira T
authors.initials: AT
authors.lastname: Kawaguchi
authors.forename: Hisayoshi
authors.initials: H
authors.lastname: Suma
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Konertz
authors.forename: Sinisa
authors.initials: S
authors.lastname: Gradinac
authors.forename: Jacob
authors.initials: J
authors.lastname: Bergsland
authors.forename: Robert D
authors.initials: RD
authors.lastname: Dowling
authors.forename: Masashi
authors.initials: M
authors.lastname: Komeda
authors.forename: Soichiro
authors.initials: S
authors.lastname: Kitamura
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Ohashi
authors.forename: Byung-Chul
authors.initials: BC
authors.lastname: Chang
authors.forename: Leonard M
authors.initials: LM
authors.lastname: Linde
authors.forename: Randas J V
authors.initials: RJ
authors.lastname: Batista
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001208:Asia / Q000453:epidemiology; D006348:Cardiac Surgical Procedures / Q000009:adverse effects; D002306:Cardiac Volume; D002648:Child; D002675:Child, Preschool; D018572:Disease-Free Survival; D005060:Europe / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000601:surgery; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000453:epidemiology / Q000503:physiopathology / Q000601:surgery*; D007223:Infant; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000601:surgery; D009200:Myocardial Contraction; D012042:Registries; D012307:Risk Factors; D013318:Stroke Volume; D017211:Treatment Failure; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology