Objective: To assess the diagnostic value of exercise echocardiography in patients with complete left bundle branch block and clinical suspicion of coronary artery disease.
Material And Methods: Among 1,176 exercise echocardiograms performed from May of 1994 to November of 1996, 92 showed complete left bundle branch block in the resting electrocardiogram. We retrospectively analyzed data of 23 patients who had coronary angiography performed within 6 weeks of the exercise echo (19 males and 4 females, age 62 +/- 8, resting ejection fraction 52 +/- 10%). Previous acute myocardial infarction was demonstrated in 8 of them. The development of new or worsening regional dysfunction was considered an ischaemic response on exercise echo; whereas we assumed that there was significant coronary artery disease on the coronariography whether there was > or = 1 vessel disease in patients without previous myocardial infarction or > or = 2 vessel disease in patients with previous infarction.
Results: Ten patients showed multivessel disease (> or = 2 vessels, 6 with previous infarction); 5 one-vessel disease; and 8 non significant coronary artery disease. Exercise echocardiography sensitivity for ischaemia detection in the entire group was 86% (95% confidence interval 67-100%); the specificity was 67% (36-98%), predictive value of a positive test was 80% and predictive value of a negative test was 75%. Sensitivity for the detection of > 50% stenosis in the left anterior descending coronary territory was 92% (76%-100%) and specificity 64% (35%-92%); for right coronary artery sensitivity was 80% (55%-100%) and specificity 77% (54%-100%); and for left circumflex artery sensitivity was 70% (42%-98%) and specificity 69% (44%-94%).
Conclusions: Exercise echocardiography may be useful in the evaluation of patients with left bundle branch block and clinical suspicion of coronary artery disease; with good sensitivity and low specificity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0300-8932(98)74735-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Effect of Colchicine on Platelet Function Profiles in Patients with Stable Coronary Artery Disease: The ECLIPSE Pilot Study.
Cardiol Ther
January 2025
Adult Medicine, Department of Clinical Medical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago.
Introduction: This prospective, single-arm pharmacodynamic study assessed the effect of colchicine (COLC) [Strides Pharma UK Ltd, Watford, Hertfordshire, England] 0.5 mg administered orally once daily for 14 days on platelet reactivity with respect to aspirin reaction units (ARUs) and P2Y reaction units (PRUs).
Methods: Twenty-two patients with stable coronary artery disease (CAD) on dual antiplatelet therapy (DAPT) with daily maintenance aspirin and clopidogrel were recruited.
Development and Validation of KCPREDICT: A Deep Learning Model for Early Detection of Coronary Artery Lesions in Kawasaki Disease Patients.
Pediatr Cardiol
January 2025
Department of Infectious Disease, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, No. 1678 Dongfang Road, Pudong New Area, Shanghai, 200127, China.
Kawasaki disease (KD) is a febrile vasculitis disorder, with coronary artery lesions (CALs) being the most severe complication. Early detection of CALs is challenging due to limitations in echocardiographic equipment (UCG). This study aimed to develop and validate an artificial intelligence algorithm to distinguish CALs in KD patients and support diagnostic decision-making at admission.
View Article and Find Full Text PDFNear-Infrared Spectroscopic Mapping of the Human Epicardium.
J Biophotonics
January 2025
Department of Electrical Engineering, Columbia University, New York, New York, USA.
Epicardial catheter ablation is necessary to address ventricular tachycardia targets located far from the endocardium, but epicardial adipose tissue and coronary blood vessels can complicate ablation. We demonstrate that catheter-based near-infrared spectroscopy (NIRS) can identify these obstacles to guide ablation. Eighteen human ventricles were mapped ex vivo using NIRS catheters with optical source-detector separations (SDSs) of 0.
View Article and Find Full Text PDF[Berberine ameliorates coronary artery endothelial cell injury in Kawasaki disease through complement and coagulation cascades].
Zhongguo Dang Dai Er Ke Za Zhi
January 2025
Department of Pediatrics, Third People's Hospital of Longgang District of Shenzhen, Shenzhen, Guangdong 518020, China.
Objectives: To explore the role of berberine (BBR) in ameliorating coronary endothelial cell injury in Kawasaki disease (KD) by regulating the complement and coagulation cascade.
Methods: Human coronary artery endothelial cells (HCAEC) were divided into a healthy control group, a KD group, and a BBR treatment group (=3 for each group). The healthy control group and KD group were supplemented with 15% serum from healthy children and KD patients, respectively, while the BBR treatment group received 15% serum from KD patients followed by the addition of 20 mmol/L BBR.
Integrative bioinformatics and machine learning approach unveils potential biomarkers linking coronary atherosclerosis and fatty acid metabolism-associated gene.
J Cardiothorac Surg
January 2025
Dongying People's Hospital (Dongying Hospital of Shandong Provincial Hospital Group), Dongying, 257091, Shandong, People's Republic of China.
Background: Atherosclerosis (AS) is increasingly recognized as a chronic inflammatory disease that significantly compromises vascular health and acts as a major contributor to cardiovascular diseases. Advancements in lipidomics and metabolomics have unveiled the complex role of fatty acid metabolism (FAM) in both healthy and pathological states. However, the specific roles of fatty acid metabolism-related genes (FAMGs) in shaping therapeutic approaches, especially in AS, remain largely unexplored and are a subject of ongoing research.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!