title: Is the routine pressure dressing after thyroidectomy necessary? A prospective randomized controlled study.
abstract: BACKGROUND
  An acute complication of thyroidectomy is fatal hematoma, which can produce an upper airway obstruction needing immediate intubation or tracheostomy. After neck surgery, we usually apply a pressure dressing with a non-woven, adhesive fabric to reduce bleeding and fluid collection at the operative bed. We conducted a prospective, randomized, controlled study to evaluate a pressure vs. a non-pressure dressing after thyroid surgery by monitoring blood and serum in the operative bed.
  
  
  METHODS
  We studied 108 patients who underwent 116 thyroid surgeries at Srinagarind Hospital, Khon Kaen University, between December 2006 and September 2007. The patients were randomized to either the pressure dressing or non-pressure dressing group. Ultrasound of the neck was performed 24 +/- 3 hours after surgery. The volume of fluid collection in the operative bed was calculated. All patients were observed for any post-operative respiratory distress, wound complications, tingling sensation or tetany.
  
  
  RESULTS
  The distributions of age, sex, surgical indications and approaches were similar between the two groups. There was no statistically significant difference in the volume of fluid collection in the operative bed (p = 0.150) and the collected drained content (p = 0.798). The average time a drain was retained was 3 days. One patient in the pressure dressing group suffered cutaneous bruising while one patient in the non-pressure dressing group developed immediate hemorrhage after the skin sutures.
  
  
  CONCLUSIONS
  Pressure dressing after thyroidectomy does not have any significant impact on decreasing fluid collection at the operative bed. The use of pressure dressing after thyroidectomy may not therefore be justified.
  
  
  BACKGROUND
  NCT00400465, ISRCTN52660978.
authors: Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Thailand. patorn@gmail.com
authors: Patorn
authors: P
authors: Piromchai
authors: Patravoot
authors: P
authors: Vatanasapt
authors: Wisoot
authors: W
authors: Reechaipichitkul
authors: Warinthorn
authors: W
authors: Phuttharak
authors: Sanguansak
authors: S
authors: Thanaviratananich