Limited value of recovery phase-limited ST segment depression of treadmill exercise test.

Hongbo Yang; Zheyong Huang; Yi Lou; Yunli Shen; Juying Qian; Junbo GE

Return

Limited value of recovery phase-limited ST segment depression of treadmill exercise test.

Author: Hongbo YANG ¹ ; Zheyong HUANG ¹ ; Yi LOU ¹ ; Yunli SHEN ¹ ; Juying QIAN ² ; Junbo GE ¹
Author Information

1. Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
2. Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China. Email: qian.juying@zs-hospital.sh.cn.
Publication Type:Journal Article
MeSH: Coronary Angiography; Coronary Artery Disease; diagnosis; Electrocardiography; Exercise Test; Female; Humans; Male; Middle Aged; Prognosis; Retrospective Studies
From: Chinese Medical Journal 2014;127(4):742-746
CountryChina
Language:English
Abstract:
BACKGROUNDClinical meaning of recovery phase limited ST segment depression of a treadmill exercise test is controversial. The aim of this study was to re-assess the diagnostic and prognostic value of ST segment depression during the recovery phase with the active phase of a treadmill exercise test in suspected coronary artery disease patients.
METHODSClinical, exercise and angiographic data were retrospectively collected from 602 patients in the study. Five hundred and seventy-six patients developed ST segment depression during the active phase of the treadmill exercise test (group 1) and 26 patients developed ST segment depression only during the recovery phase (group 2).
RESULTSWith similar major clinical features, the prevalence of significant coronary artery stenosis and average Gensini scores were lower in the recovery phase-limited depression patients (group 2 vs. group 1, 50.0% vs. 66.9%, P = 0.031 and group 2 vs. group 1, 1.5 vs. 8.5, P = 0.04). At a median follow up of 50.9 months for 22 group 2 and 34.8 months for 438 group 1 patients, the prevalence of total cardiac events was higher in group 1 than in group 2 patients (RR 1.60, 95% CI 1.00-2.54, P = 0.049).
CONCLUSIONThe present study provides preliminary evidence that the diagnostic and prognostic value of recovery phaselimited ST segment depression of treadmill exercise test is limited.