title: A case-controlled matched-pair cohort study of single-incision and conventional laparoscopic gastric band patients in a single US center with 1-year follow-up.
abstract: BACKGROUND
  Single-incision laparoscopic gastric banding has been reported to be safe and feasible. This matched case-control study is the first to compare the outcome in terms of weight loss and comorbidity improvement and band positioning of single-incision versus conventional laparoscopic gastric banding with 1-year follow-up.
  
  
  METHODS
  Patients undergoing gastric banding surgery by one surgeon (S.V.) were prospectively entered into a database. Data collected included basic demographics, perioperative parameters, early and late postoperative (PO) morbidity, weight loss, and phi angle. Ten patients who underwent a single-incision gastric banding procedure were matched one-to-two with 20 patients undergoing conventional gastric banding from a database of 151 patients. Match was obtained according to gender, body mass index (BMI) ± 4 kg/m(2), age ± 8 years, and presence of at least one comorbidity in common. Generalized linear mixed models were used for statistical analysis.
  
  
  RESULTS
  Patients' initial characteristics were similar: SIL and conventional, respectively: sex (female:male) 9:10 and 18:20; age (years): 36.5 ± 10 and 37.5 ± 9; preoperative BMI (kg/m(2)): 41.8 ± 4 and 42.4 ± 3; weight (kg): 110.2 ± 13 and 117.9 ± 13; hospital stay (days): 1 and 1; operative time (min): 106.6 ± 24 and 100.9 ± 22. No significant differences were found in patients' BMI or excess weight loss during 1-year follow-up. The phi angles of the bands varied in a comparable range: PO day 1 (degrees): 62 ± 13 and 59 ± 15; PO week 6: 55 ± 9 and 54 ± 11, for SIL and conventional, respectively.
  
  
  CONCLUSIONS
  In this matched case-controlled study, single-incision laparoscopic adjustable gastric banding surgery outcomes were similar to those of the conventional multi-trocar laparoscopic operation. Band position as described by phi angle was also similar in the two groups. These results suggest that use of a single-incision approach does not compromise the results or band positioning of gastric banding surgery.
authors: Department of Surgery, The Miriam Hospital, Warren Alpert Medical School of Brown University, 164 Summit Ave, Providence, RI 02906, USA. svithiananthan@lifespan.org
authors: Sivamainthan
authors: S
authors: Vithiananthan
authors: Daniel
authors: D
authors: Gero
authors: Jason Y
authors: JY
authors: Zhang
authors: Jason T
authors: JT
authors: Machan
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D015331:Cohort Studies; D005260:Female; D015391:Gastroplasty / Q000379:methods*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D055815:Young Adult