Clinical outcomes of discordant exercise electrocardiographic and echocardiographic findings compared with concordant findings in patients with chest pain and no history of coronary artery disease: An observational study. Issue 39 (September 2019)

• Record Type: Journal Article
• Authors: Hwang, Hui-Jeong; Sohn, Il Suk; Park, Chang-Bum; Jin, Eun-Sun; Cho, Jin-Man; Kim, Chong-Jin
• Other Names: Baltatu. Ovidiu Constantin section editor.
• Is Part Of: Medicine. Volume 98:Issue 39(2019)
• Publication Date: 2019-09
• Subjects: clinical outcome -- discordance -- echocardiography -- electrocardiography -- myocardial ischemia; Medicine -- Periodicals; Medicine -- Periodicals; Médecine -- Périodiques; Geneeskunde; Medicine; Periodicals; Periodicals; 610.5
• DOI: 10.1097/MD.0000000000017195
• Languages: English
• ISSNs: 0025-7974

Abstract

Abstract : Abstract: The aim of this study was to evaluate comparative clinical outcomes of discordant electrocardiographic (ECG) and echocardiographic (Echo) findings compared with concordant findings during treadmill exercise echocardiography in patients with chest pain and no history of coronary artery disease (CAD). A total of 1725 consecutive patients who underwent treadmill echocardiography with chest pain and no history of CAD were screened. The patients were classified into 4 groups: ECG–/Echo– (negative ECG and Echo), ECG+/Echo– (positive ECG and negative Echo), ECG–/Echo+, and ECG+/Echo+. Concomitant CAD was determined using coronary angiography or coronary computed tomography. Major adverse cardiac events (MACEs) were defined as a composite of coronary revascularization, acute myocardial infarction, and death. MACEs were similar between ECG–/Echo– and ECG+/Echo– groups. Compared with ECG+/Echo– group, ECG–/Echo+ group had more MACEs (adjusted hazard ratio [HR] adjusted by clinical risk factors [95% confidence interval {CI}], 3.57 [1.75–7.29], P < .001). Compared with ECG+/Echo+ group, ECG–/Echo+ group had lower prevalence of concomitant CAD and fewer MACEs (HR, 0.49 [0.29–0.81], P = .006). Positive exercise Echo alone during treadmill exercise echocardiography had worse clinical outcomes than positive ECG alone, and the latter had similar outcomes to both negative ECG and Echo. Positive exercise Echo alone also had better clinical outcomes than both positive ECG and Echo. Therefore, exercise Echo findings might be superior for predicting clinical outcomes compared with exercise ECG findings. Additional consideration of ECG findings on positive exercise Echo will also facilitate better prediction of clinical outcomes. Abstract : Supplemental Digital Content is available in the text