title: A randomized controlled trial of women's early use of a novel undergarment following sternotomy: the Women's Recovery from Sternotomy Trial (WREST).
abstract: BACKGROUND
  Despite a lack of randomized trial evidence, clinicians often suggest that women use a brassiere to reduce poststernotomy pain and discomfort. We tested the effect of women's use of a special (compression) undergarment after sternotomy on pain, discomfort, and functional status.
  
  
  METHODS
  Women (n = 481) having first-time sternotomy in 1 of 10 Canadian centers were randomized to receive the intervention or usual care. Pain and discomfort data (using numeric rating scales) were collected in person while participants were hospitalized. Thereafter, pain, discomfort, and functional status data (using Health Assessment Questionnaire) were collected by standardized telephone interview until 12 postoperative weeks.
  
  
  RESULTS
  Overall, and until at least 6 weeks postoperatively, fewer women in the intervention than usual care group reported having incision and breast pain and discomfort. Breast pain scores were lower in the intervention than the usual care group at 2 weeks postoperatively (P = .04), and over time (OR 0.65 [95% CI 0.45-0.94], P = .02). For women discharged within 14 postoperative days, post hoc analyses revealed intervention group patients had a significantly reduced likelihood of breast pain (OR 0.46 [95% CI 0.32-0.66], P < .001) and breast discomfort (OR 0.62 [95% CI 0.44-0.86], P = .01) but not incision pain (OR 0.99 [95% CI 0.72-1.37], P = .95) or discomfort (OR 0.77 [95% CI 0.55-1.02], P = .06). There was no difference between groups in functional status. The effects were not influenced by age or brassiere size.
  
  
  CONCLUSIONS
  Using a supportive undergarment during the early postoperative reduces breast pain. This finding is amplified and extends to include a reduction in breast discomfort, when women are discharged within 14 postoperative days.
authors.affiliation: University of Calgary, Calgary, Alberta, Canada. kingk@ucalgary.ca
authors.forename: Kathryn M
authors.initials: KM
authors.lastname: King
authors.forename: Ross
authors.initials: R
authors.lastname: Tsuyuki
authors.forename: Peter
authors.initials: P
authors.lastname: Faris
authors.forename: Gillian
authors.initials: G
authors.lastname: Currie
authors.forename: Andrew
authors.initials: A
authors.lastname: Maitland
authors.forename: Ruth L
authors.initials: RL
authors.lastname: Collins-Nakai
mesh_terms: D000368:Aged; D001940:Breast; D006348:Cardiac Surgical Procedures; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D010146:Pain / Q000517:prevention & control; D010149:Postoperative Pain / Q000517:prevention & control*; D011182:Postoperative Care; D011481:Protective Clothing; D013249:Sternum / Q000601:surgery*; D013997:Time Factors