title: Repair of large incisional hernias. To drain or not to drain. Randomized clinical trial.
abstract: OBJECTIVE
  To evaluate the occurrence of seroma and surgical wound infection after surgery.
  
  
  METHODS
  A total of 42 individuals with large incisional hernias were subjected toonlay mesh repair. Following the mesh placement, the participants were randomly allocated to two groups. In group 1, closed-suction drains were placed in the subcutaneous tissue, while progressive tension sutures were performed in group 2. The participants were subjected to clinical and ultrasound assessment to detect seroma and surgical wound infection at three time-points after surgery.
  
  
  RESULTS
  The occurrence of seroma at the early, intermediate or late assessments was respectively 19.0%, 47.6%, 52.4% in group 1 and 28.6%, 57.1%, 42.9% in group 2 and was not significantly different between groups (p 0.469; 0.631; 0.619). Surgical wound infection occurred 19% in group 1 and 23.8% in group 2, without a significant difference between the groups (p>0.999).
  
  
  CONCLUSIONS
  The frequency of seroma and infection did not exhibit significant differences between individuals subjected to onlay mesh repair of large incisional hernias with drains or progressive tension sutures without drainage.
authors.affiliation: Department of Surgery, School of Medicine, Universidade Estadual do Oeste do Paraná, Brazil.
authors.forename: André Pereira
authors.initials: AP
authors.lastname: Westphalen
authors.affiliation: Department of Surgery, School of Medicine, UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Allan Cézar Faria
authors.initials: AC
authors.lastname: Araújo
authors.affiliation: Department of Surgery, School of Medicine, UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Zacharias
authors.affiliation: Department of Surgery, School of Medicine, UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Eduardo Silva
authors.initials: ES
authors.lastname: Rodrigues
authors.affiliation: Department of Surgery, UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Geanine Baggio
authors.initials: GB
authors.lastname: Fracaro
authors.affiliation: Department of Surgery, School of Medicine, Universidade Federal de São Paulo, Brazil.
authors.forename: Gaspar de Jesus
authors.initials: Gde J
authors.lastname: Lopes Filho
mesh_terms: D000328:Adult; D000368:Aged; D004322:Drainage / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006555:Hernia, Ventral / Q000601:surgery; D059685:Herniorrhaphy / Q000534:rehabilitation*; D006801:Humans; D000069290:Incisional Hernia / Q000150:complications / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012086:Reoperation; D049291:Seroma / Q000000981:diagnostic imaging / Q000209:etiology*; D013526:Surgical Mesh / Q000009:adverse effects; D013530:Surgical Wound Infection / Q000209:etiology*; D013536:Suture Techniques / Q000009:adverse effects; D014463:Ultrasonography