Document Detail

Clinical value of echocardiographic assessment of coronary flow reserve after left anterior descending coronary artery stenting in an unselected population.
MedLine Citation:
PMID:  19001933     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Transthoracic Doppler echocardiography is a valuable tool to measure coronary flow reserve (CFR) and detect in-stent restenosis (ISR) after percutaneous coronary angioplasty in selected series of patients. OBJECTIVES: To assess the usefulness of coronary flow reserve measured by echocardiography in detecting significant (> or =70%) ISR of the left anterior descending coronary artery in a large unselected population. METHODS: Two hundred and twenty-three patients (age 61 +/- 10 years; 168 men) treated with left anterior descending stenting underwent CFR measurement by transthoracic Doppler echocardiography and venous adenosine infusion 24-72 h before control coronary angiography. Coronary-active drugs were continued, and patients with multiple risk factors and old anterior-apical myocardial infarction were included. RESULTS: Significant ISR occurred in 56 patients (25%). Patients with ISR had higher basal coronary flow velocity (27 +/- 10 cm/s vs. 24 +/- 7 cm/s; P < 0.002) and lower CFR (1.5 +/- 0.5 vs. 2.7 +/- 0.6; P < 0.0001) than those without ISR. A linear relation was found between ISR and CFR (r = -0.73; P < 0.0001) and remained significant after adjustment for blood pressure and heart rate (r = -0.74; P < 0.0001). A CFR less than two identified significant ISR (sensitivity 88%, specificity 88%, area under the curve = 0.943; P < 0.001). In a multivariate model of CFR prediction, myocardial infarction and heart rate were slightly contributory (ss = -0.19, P < 0.01; ss = -0.16, P < 0.03, respectively), whereas ISR had a large influence (ss = -0.66; P < 0.0001). The inverse correlation between ISR and CFR persisted in patients with myocardial infarction (r = -0.64; P < 0.0001) and in those treated with beta-blockers (r = -0. 71; P < 0.0001). CONCLUSION: Echocardiographic measurement of CFR detects significant left anterior descending ISR in unselected patients with multiple risk factors, old anterior-apical myocardial infarction, and taking beta-blockers.
Rodolfo Citro; Paolo Voci; Francesco Pizzuto; Anton Giulio Maione; Marco Mariano Patella; Eduardo Bossone; Gennaro Provenza; Giovanni Gregorio; Enrica Mariano; Matthew Feinstein; Georgeos Athanassopoulos; Paolo Emilio Puddu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cardiovascular medicine (Hagerstown, Md.)     Volume:  9     ISSN:  1558-2027     ISO Abbreviation:  J Cardiovasc Med (Hagerstown)     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-12     Completed Date:  2009-02-06     Revised Date:  2009-05-28    
Medline Journal Info:
Nlm Unique ID:  101259752     Medline TA:  J Cardiovasc Med (Hagerstown)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1254-9     Citation Subset:  IM    
San Luca Hospital, Vallo della Lucania, Salerno, Italy.
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MeSH Terms
Coronary Angiography
Coronary Circulation / physiology*
Coronary Disease / therapy*,  ultrasonography
Coronary Restenosis / ultrasonography
Echocardiography, Doppler*
Heart Rate
Middle Aged
Sensitivity and Specificity

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