Background and ObjectivesIn patients with coronary vasospastic angina we investigated whether exercise ECG test results vary with the different modes of exercise load and compared various clinical characteristics, including coronary risk factors, between patients with positive and those with negative exercise test results. Materials and MethodsThis study examined 34 patients who had documented coronary artery spasm without significant stenosis coronary artery luminal diameter narrowing 70 . The two different modes of treadmill exercise ECG tests, the first based on the Bruce's protocol graded exercise test, GET and the second on the sudden rapid exercise protocol non-graded exercise test, NGET , were performed in the morning of the same day. Results Of 29 patients who underwent both GET and NGET, 19 patients manifested a positive result by NGET, whereas only 11 did by GET 66 vs. 38 , p 0.04 . All patients with a positive GET result produced a positive NGET result and 8 of 18 patients with a negative GET result also did. Of 34 patients who underwent GET, there was no significant difference in the frequency of hypertension, diabetes, current smoking, history of effort chest pain, mixed disease fixed stenosis 50 , 70 of luminal diameter or in total cholesterol level between patients with positive and those with negative results. Among 18 patients with typical variant angina by clinical history, 8 of 10 patients with high disease activity 5 or more attacks per week exhibited a positive result by either GET or NGET, whereas 4 of 8 patients with low disease activity did 80 vs. 50 , p NS . Conclusion In patients with coronary vasospastic angina, sudden rapid exercise has the potential to induce coronary artery spasm more frequently than multistage exercise. Exercise test results may not be correlated with coronary risk factors, coronary anatomy, effort chest pain, and the disease activity. Korean Circulation J 2001 ; 31 9 : 857-866
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.