title: Incidence of short-term complications and associated factors after primary trabeculectomy in Chiang Mai University Hospital.
abstract: BACKGROUND
  To determine the incidence of early postoperative complications and associated factors after primary trabeculectomy in Thai glaucoma patients.
  
  
  METHODS
  This was a retrospective observational study performed in Chiang Mai University Hospital.
  
  
  METHODS
  One hundred and eighteen glaucoma patients participated in the study.
  
  
  METHODS
  All glaucoma patients underwent primary trabeculectomy with mitomycin C (MMC) using fornix-based conjunctival flap technique between December 2011 and May 2013. Surgical complications during the first 3 months of follow-up were recorded, and associated risk factors were analyzed.
  
  
  METHODS
  The incidence of posttrabeculectomy complications was the main outcome measure.
  
  
  RESULTS
  One hundred and eighteen eyes of 118 patients were included. Early postoperative complications developed in 55 eyes (56.7%). Complications included hypotony (25 eyes, 27.2%), serous choroidal detachment (CD) (14 eyes, 15.6%), subconjunctival hemorrhage (12 eyes, 13.0%), hyphema (11 eyes, 12.4%), bleb leak (8 eyes, 8.8%), encapsulated bleb (2 eyes, 2.2%), aqueous misdirection (1 eyes, 1.1%), corneal epithelial defect (1 eyes, 1.1%), and overfiltration (1 eyes, 1.1%). There were no reported cases of endophthalmitis or blebitis. Hypotony was associated with serous CD (P = 0.006), and hyphema was associated with neovascular glaucoma (NVG) patients (P = 0.009). NVG was not associated with the increased rate of surgical failure (P = 0.083).
  
  
  CONCLUSIONS
  The incidence of early complications after first-time trabeculectomy with MMC was high (56.7%) in this Thai clinic setting, but most were transient and self-limited conditions. The correlations between hypotony and CD as well as hyphema and NVG were compatible with the previous studies.
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Thidarat
authors.initials: T
authors.lastname: Leeungurasatien
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Preeyanuch
authors.initials: P
authors.lastname: Khunsongkiet
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Kassara
authors.initials: K
authors.lastname: Pathanapitoon
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Damrong
authors.initials: D
authors.lastname: Wiwatwongwana
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D005901:Glaucoma / Q000601:surgery*; D006785:Hospitals, University / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D012189:Retrospective Studies; D013785:Thailand / Q000453:epidemiology; D013997:Time Factors; D014130:Trabeculectomy / Q000009:adverse effects*; D016896:Treatment Outcome; D055815:Young Adult