قيمة السلالة الطولية مقابل تصوير الاوعية التاجية في الكشف عن مرض الشريان التاجي == The Value of Longitudinal Strain versus Coronary Angiography in Detection of Coronary Artery Disease
Author name:
حسان نوري محمود
Supervisor name:
معتز فوزي حسين
General topic:
Medicine
Specific topic:
Echocardiography
Degree:
Higher Diploma
University:
University of Baghdad - Faculty Of Medicine
Language:
English
University location:
Baghdad
First pages:
19T1447 - p.pdf
Abstract:
Introduction : Coronary artery disease is characterized by atherosclerosis in the epicardial coronary arteries. The reduction in coronary artery flow may be symptomatic or asymptomatic, occurs with exertion or at rest, and culminate in a myocardial infarction or angina, depending on obstruction severity and the rapidity of development. Speckle - tracking echocardiography is a new noninvasive ultrasound imaging technique that allows for an objective and quantitative evaluation of global and regional myocardial function independently from the angle of insonation and from cardiac translational movements.Aim of the study : to assess the value of longitudinal strain versus coronary angiography in detection of coronary artery disease Patients and method : A cross sectional study was conducted in Ibn - Albitar hospital during the period between March 2015 and March 2016 and a sample of 72 patients was selected with positive coronary angiography. Results : The mean age of patients was 56.4 ± 10.1 years; furthermore, 73.6% of the patients aged more than 50 years. About half of the patients, (51.4%) were smokers, (73.6%) were diabetic, (33.3%) were hypertensive and (58.3%) had hyperlipidemia. the findings of 2D LV Longitudinal strain - speckle tracking, positive LADA (left anterior descending artery) stenosis was reported in (86.1%), the CX artery stenosis reported in (76.4%) and the RCA stenosis was found in (84.7%) of the patients. for the stenosis in LADA, the current study showed that the longitudinal strain was a good predictor with a sensitivity of (93.8%), specificity (75%) and accuracy (91.7%) compared with coronary angiography, with good performance of the test between tests, good predictive value and accuracy of the test.The longitudinal strain showed that there was a good performance in detection of stenosis in CXA with high sensitivity, specificity and accuracy. The performance and validity of 2D LV longitudinal strain in detection of RCA stenosis in comparison with angiography, it had a sensitivity of (93.5%), specificity of (70.0%) and accuracy of (90.3%).Conclusion : The current study revealed that the Speckle - tracking echocardiography technique has a good performance and validity in detection of coronary artery stenosis with very good agreement with angiography.
