1. Increased myocardial energy expenditure in cardiac syndrome X: More work, more pain
- Author
-
Mehmet Serkan Çetin, Elif Hande Özcan Çetin, Uğur Canpolat, Mehmet Akif Erdöl, Selahattin Aydın, Özlem Özcan Çelebi, Ahmet Temizhan, Yeşim Akın, Omaç Tüfekçioğlu, Dursun Aras, Serkan Topaloğlu, and Sinan Aydoğdu
- Subjects
duke score ,cardiac syndrome x ,myocardial energy expenditure. ,Medicine ,Internal medicine ,RC31-1245 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Objective: The aim of this study was to assess the myocardial energy expenditure (MEE) in patients with cardiac syndrome X (CSX) and to examine its association with exercise electrocardiogram (ECG) parameters. Methods: A total of 99 patients who underwent coronary angiography and who were diagnosed as having normal coronary arteries were included. The patients were divided into 2 groups based on symptoms and exercise ECG parameters: 56 CSX patients and 43 control patients with a negative stress test. MEE was calculated using transthoracic echocardiography-derived parameters: circumferential end-systolic stress, left ventricular ejection time, and stroke volume. Results: In patients with CSX, the MEE at rest was 28% higher in than the control group (89.2+-36.3 vs. 69.8+-17.2 cal/minute). Correlation analysis revealed a moderately negative correlation between MEE and the Duke treadmill score (DTS) (β: -0.456; p
- Published
- 2018
- Full Text
- View/download PDF