title: Open repair of large abdominal wall hernias with and without components separation; an analysis from the ACS-NSQIP database.
abstract: BACKGROUND
  Components separation technique emerged several years ago as a novel procedure to improve durability of repair for ventral abdominal hernias. Almost twenty-five years since its initial description, little comprehensive risk adjusted data exists on the morbidity of this procedure. This study is the largest analysis to date of short-term outcomes for these cases.
  
  
  METHODS
  The ACS-NSQIP database identified open ventral or incisional hernia repairs with components separation from 2005 to 2012. A data set of cohorts without this technique, matched for preoperative risk factors and operative characteristics, was developed for comparison. A comprehensive risk-adjusted analysis of outcomes and morbidity was performed.
  
  
  RESULTS
  A total of 68,439 patients underwent open ventral hernia repair during the study period (2245 with components separation performed (3.3%) and 66,194 without). In comparison with risk-adjusted controls, use of components separation increased operative duration (additional 83 min), length of stay (6.4 days vs. 3.8 days, p < 0.001), return to the OR rate (5.9% vs. 3.6%, p < 0.001), and 30-day morbidity (10.1% vs. 7.6%, p < 0.001) with no increase in mortality (0.0% in each group).
  
  
  CONCLUSIONS
  Components separation technique for large incisional hernias significantly increases length of stay and postoperative morbidity. Novel strategies to improve short-term outcomes are needed with continued use of this technique.
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: Nirav K
authors.initials: NK
authors.lastname: Desai
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: I Michael
authors.initials: IM
authors.lastname: Leitman
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Mills
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: Valentina
authors.initials: V
authors.lastname: Lavarias
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: David L
authors.initials: DL
authors.lastname: Lucido
authors.affiliation: Department of Surgery, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
authors.forename: Martin S
authors.initials: MS
authors.lastname: Karpeh
keywords: Components separation; Incisional hernia; Ventral hernia