title: Directional coronary atherectomy at the Toronto and Mount Sinai Hospitals: report of the initial 120 procedures.
abstract: OBJECTIVE
  To assess the procedural success and complication rates of the first 120 directional coronary atherectomy cases performed at two Toronto hospitals.
  
  
  METHODS
  Case series in tertiary referral centres.
  
  
  METHODS
  One hundred and thirteen patients in whom 120 atherectomy procedures were attempted between July 1990 and April 1992.
  
  
  METHODS
  Directional coronary atherectomy.
  
  
  RESULTS
  Angiographic success was obtained in 115 of 120 procedures (96%) involving 117 of 123 lesions (95%). Procedural success (angiographic success without death, myocardial infarction or coronary bypass surgery) was obtained in 110 of 120 procedures (92%). Adjunctive balloon angioplasty was required in 20 procedures (17%). There was one death at 36 h in an elderly patient who underwent an emergency procedure while in cardiogenic shock. Periprocedural non-Q wave myocardial infarction occurred in five patients. There were no Q wave myocardial infarctions. Three patients required coronary bypass surgery prior to discharge and vascular complications occurred in five patients.
  
  
  CONCLUSIONS
  Directional coronary atherectomy can be performed with procedural success and complication rates comparable to conventional balloon angioplasty. Randomized trials are underway to determine if atherectomy results in a lower restenosis rate.
authors.affiliation: Department of Medicine, Toronto Hospital, Ontario.
authors.forename: A G
authors.initials: AG
authors.lastname: Adelman
authors.forename: E A
authors.initials: EA
authors.lastname: Cohen
authors.forename: R G
authors.initials: RG
authors.lastname: Carere
authors.forename: B P
authors.initials: BP
authors.lastname: Kimball
mesh_terms: D000328:Adult; D000368:Aged; D017225:Atherectomy, Coronary / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods; D002170:Canada; D017023:Coronary Angiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome