title: Argon beam coagulation for post-tonsillectomy hemostasis.
abstract: OBJECTIVE
  The study goal was to evaluate the effectiveness of argon beam coagulation (ABC) in the prevention of post-tonsillectomy hemorrhage. ABC provides monopolar coagulation by arcing ionized argon gas to the target tissue; it is not a laser.
  
  
  METHODS
  Two consecutive studies were performed as follows. In the first, a retrospective analysis of post-tonsillectomy bleeding in 344 patients was conducted. Final tonsil fossa hemostasis was achieved with ABC (257 patients) or with electrocoagulation (EC) (87 patients). In the second, a prospective, randomized, patient-blind study of post-tonsillectomy bleeding was conducted in 88 patients. Final hemostasis was achieved using ABC in one fossa and EC in the other fossa, with the sides chosen at random.
  
  
  RESULTS
  Post-tonsillectomy hemorrhage was defined as the expectoration of fresh blood, as opposed to blood-streaked saliva. The rates of bleeding for the 2 studies were as follows. In study 1 for EC, 20% for adults, 6.5% for children, and 10.3% for total; for ABC, 4.7% for adults, 0.6% for children, and 1.9% for total. In study 2 for EC, 19.2% for adults, 1.6% for children, and 6.8% for total; for ABC, 7.7% for adults, 0.0% for children, and 1.1% for total. The rates of hospital admission for observation or reoperation to treat the bleeding in study 1 for EC were 8% for adults, 6.5% for children, and 6.9% for total; for ABC, 1.2% for adults, 0.6% for children, and 0.7% for total. Corresponding rates for study 2 for EC were 15.4% for adults, 1.6% for children, and 5.7% for total; for ABC, 3.8% for adults, 0.0% for children, and 1.1% for total.
  
  
  CONCLUSIONS
  ABC is more effective than EC for hemostasis after tonsillectomy. The costs of ABC use vs the savings achieved from reduced bleeding are discussed.
authors.affiliation: Massachusetts Eye and Ear Infirmary, Department of Otolaryngology, and Harvard Medical School, Boston 02180, USA. dbowling@massmed.org
authors.forename: David M
authors.initials: DM
authors.lastname: Bowling
mesh_terms: D000293:Adolescent; D000328:Adult; D001128:Argon; D002648:Child; D002675:Child, Preschool; D004564:Electrocoagulation / Q000379:methods; D006489:Hemostatic Techniques; D006801:Humans; D007223:Infant; D017075:Laser Coagulation / Q000379:methods*; D019106:Postoperative Hemorrhage / Q000628:therapy*; D012189:Retrospective Studies; D014068:Tonsillectomy / Q000009:adverse effects* / Q000379:methods
chemical_list: D001128:Argon