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Heart 1998;79:148-152; doi:10.1136/hrt.79.2.148
Copyright © 1998 BMJ Publishing Group Ltd & British Cardiovascular Society

Heart 1998;79:148-152 ( February )

Stenting of "unprotected" left main coronary artery stenoses: early and late results

C J J Laruelle, G B R Brueren, S M P G Ernst, E T Bal, G E Mast, M-J Suttorp, A Brutel de la Rivière, T H W Plokker

Department of Interventional Cardiology and Cardiothoracic Surgery, St Antonius Hospital Koekoekslaan 1, Nieuwegein 3435, Netherlands

Correspondence to: Dr Plokker.

Accepted for publication 22 September 1997

Objective---To assess short and long term efficacy of coronary stent implantation for unprotected left main coronary artery stenosis.
Design---Retrospective follow up study.
Setting---Tertiary referral centre for interventional cardiology and cardiac surgery.
Patients---Eighteen consecutive patients (12 men; age 70.8 years) between May 1993 and July 1996. Ten patients presented with stable angina and underwent the procedure electively, eight patients presented either with unstable angina or myocardial infarction and underwent the procedure in emergency.
Intervention---Johnson and Johnson Palmaz-Schatz stents were used in 16 patients, and a Microstent and a Gianturco-Roubin in one patient each. An intra-aortic balloon pump was prophylactively used for two patients in the elective group. In the acute group, six required an intra-aortic balloon pump.
Main outcome measures---Procedural success rate and major adverse cardiac events.
Results---Successful stent implantation was achieved in all patients. In the elective group, no major adverse cardiac event occurred during the procedure, but one patient had to undergo repeated angioplasty before discharge. All patients of the elective group were discharged alive and there has been one non-cardiac death during a follow up of (mean (SD)) 10 (4) months. In the emergency group, one patient died during the procedure, one patient developed a non Q-wave myocardial infarction, one patient underwent emergency coronary bypass surgery, while another patient died suddenly before hospital discharge. Six patients of the emergency group were discharged alive and there has been one non-cardiac death during a follow up of 7 (4) months.
Conclusions---Elective stent implantation for unprotected left main coronary artery stenosis is safe and effective in selected stable patients. Urgent stent implantation, however, cannot be considered as a definitive procedure in emergency situation.

Keywords: stent;  left main coronary artery disease

© 1998 by Heart
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