Left internal mammary artery bypass dysfunction after revascularization of moderately narrowed coronary lesions. Colour-duplex ultrasound versus angiography study
| Autor: | Katia M.C. Verhamme, Viliam Fridrich, I. Riecansky, Juraj Madaric, Ivan Vulev, Jozef Bartunek, Bernard De Bruyne, A. Mistrik, Jozef Pacak |
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| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Transducers Diastole Coronary Disease Internal thoracic artery Revascularization Coronary Angiography Preoperative care Statistics Nonparametric Postoperative Complications Predictive Value of Tests Internal medicine medicine.artery parasitic diseases medicine Humans Radiology Nuclear Medicine and imaging Internal Mammary-Coronary Artery Anastomosis medicine.diagnostic_test business.industry General Medicine Middle Aged medicine.disease Echocardiography Doppler Color Coronary arteries Stenosis medicine.anatomical_structure Predictive value of tests Angiography Cardiology population characteristics Female Radiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology. 9(2) |
| ISSN: | 1532-2114 |
| Popis: | Background The left internal mammary artery (LIMA) is the conduit of choice for revascularization of coronary arteries and its popularity further increases in the era of mini-invasive coronary surgery. The aim of this study was first, to assess the accuracy of CDUS in predicting the LIMA graft dysfunction as compared to angiography, and secondly, to correlate the postoperative status of the LIMA graft with preoperative coronary artery stenosis severity of the bridged lesion. Methods and results We examined 111 patients (pts) by colour-duplex ultrasound after myocardial revascularization by LIMA bypass (3.8 ± 3.2 years after revascularization). LIMA was detected from the left supraclavicular approach at rest using the 7.5 MHz linear transducer. The ultrasound results were compared to contemporaneous angiography. The LIMA bypass patency was correlated with the preoperative coronary artery stenosis severity. The LIMA was detected by ultrasound in 92.8% (103) pts. At angiography, LIMA was patent and functional in 85 pts (76.6%, group A); in 25 subjects LIMA was stenosed or dysfunctional (22.5%, group B). In one patient the coronary subclavian steal syndrome was detected (0.9%). Haemodynamically moderate stenosis (50–60% by preoperative quantitative coronary angiography) was grafted in 5 pts of group A (6%), but in 10 pts of group B (40%) ( P < 0.0001 vs group A). A peak systolic to peak diastolic velocity ratio (SDVR) of |
| Databáze: | OpenAIRE |
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