title: Comparison of Postoperative Drain Insertion versus No Drain Insertion in Thyroidectomies: Retrospective case-control study from the Sultan Qaboos University Hospital, Muscat, Oman.
abstract: OBJECTIVE
  A thyroidectomy is a frequently performed surgical procedure which can result in life-threatening complications. The insertion of a drain after a thyroidectomy has been suggested to prevent such complications. This study aimed to evaluate the use of surgical drains following thyroidectomies in relation to postoperative complications and mass sizes.
  
  
  METHODS
  This retrospective case-control study included all thyroidectomies conducted at the Sultan Qaboos University Hospital, Muscat, Oman, from January 2011 to December 2013. Length of hospital stay, readmission, postoperative complications and mass size were evaluated.
  
  
  RESULTS
  During the study period, 250 surgeries were carried out on 241 patients. The majority of patients were female (87.2%). Drains were inserted postoperatively after 202 surgeries (80.8%) compared to 48 surgeries (19.2%) without drains. A total of 32 surgeries (12.8%) were conducted on patients with thyroid masses <1 cm, 138 (55.2%) on those with masses between 1-4 cm and 80 (32.0%) on those with masses >4 cm. The association between drain use and mass size was not significant (P= 0.439). Although postoperative complications were more prevalent in patients with drains, the relationship between these factors was not significant (P>0.050). Length of hospital stay was significantly longer among patients with postoperative drains (P<0.010).
  
  
  CONCLUSIONS
  The routine insertion of drains after thyroid surgeries was found to result in longer hospital stays and did not reduce rates of post-thyroidectomy complications. Thyroid mass size should not be used as an indicator for the insertion of a drain after thyroidectomy.
authors.affiliation: Department of Surgery, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Asma S
authors.initials: AS
authors.lastname: Al-Habsi
authors.affiliation: Department of Surgery, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Al-Anood K
authors.initials: AK
authors.lastname: Al-Sulaimani
authors.affiliation: General Surgery Residency Program, Oman Medical Specialty Board, Muscat, Oman.
authors.forename: Kadhim M
authors.initials: KM
authors.lastname: Taqi
authors.affiliation: Department of Surgery, Sultan Qaboos University Hospital, Muscat, Oman.
authors.forename: Hani A
authors.initials: HA
authors.lastname: Al-Qadhi
keywords: Drainage; Length of Stay; Oman; Postoperative Complications; Thyroidectomy