Abstract:
OBJECTIVES:The purpose of this study was to determine the prevalence, clinical characteristics, and management of coronary chronic total occlusions (CTOs) in current practice. BACKGROUND:There is little evidence in contemporary literature concerning the prevalence, clinical characteristics, and treatment decisions regarding patients who have coronary CTOs identified during coronary angiography. METHODS:Consecutive patients undergoing nonurgent coronary angiography with CTO were prospectively identified at 3 Canadian sites from April 2008 to July 2009. Patients with previous coronary artery bypass graft surgery or presenting with acute ST-segment elevation myocardial infarction were excluded. Detailed baseline clinical, angiographic, electrocardiographic, and revascularization data were collected. RESULTS:Chronic total occlusions were identified in 1,697 (18.4%) patients with significant coronary artery disease (>50% stenosis in ≥1 coronary artery) who were undergoing nonemergent angiography. Previous history of myocardial infarction was documented in 40% of study patients, with electrocardiographic evidence of Q waves corresponding to the CTO artery territory in only 26% of cases. Left ventricular function was normal in >50% of patients with CTO. Half the CTOs were located in the right coronary artery. Almost half the patients with CTO were treated medically, and 25% underwent coronary artery bypass graft surgery (CTO bypassed in 88%). Percutaneous coronary intervention was done in 30% of patients, although CTO lesions were attempted in only 10% (with 70% success rate). CONCLUSIONS:Chronic total occlusions are common in contemporary catheterization laboratory practice. Prospective studies are needed to ascertain the benefits of treatment strategies of these complex patients.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Fefer P,Knudtson ML,Cheema AN,Galbraith PD,Osherov AB,Yalonetsky S,Gannot S,Samuel M,Weisbrod M,Bierstone D,Sparkes JD,Wright GA,Strauss BHdoi
10.1016/j.jacc.2011.12.007subject
Has Abstractpub_date
2012-03-13 00:00:00pages
991-7issue
11eissn
0735-1097issn
1558-3597pii
S0735-1097(11)05353-8journal_volume
59pub_type
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