Significance of 'recovery ST-segment Depression' in Exercise Stress Test

Overview

Journal Indian Heart J

Publisher Elsevier

Specialty Cardiology & Vascular Diseases

Date 2021 Oct 16

PMID 34655577

Citations 1

Authors

Rockey Katheria

Subramanyam K Setty MDDM

B S Arun

Prabhavathi Bhat MDDM DNB

H V Jagadeesh

C N Manjunath

Affiliations

Soon will be listed here.

Abstract

Objective: To study the significance of ST-segment depression during 'recovery' compared to that 'during stress' and 'both the phases' in exercise stress test.

Methods: Patients with positive exercise stress test who underwent coronary angiography (CAG) from 1st January 2017 to 31st December 2018 were studied. Patients were divided into 3 groups- Group A with ST-depression restricted to recovery phase, group B with ST-depression restricted to stress phase and group C with ST-depression seen both during exercise and recovery. All patients underwent CAG. Sensitivity, specificity, and predictive values of each of these groups in diagnosis of significant coronary artery disease (CAD) were analysed and compared.

Results: Total 300 patients were studied. Mean age of the study population was 48.77 ± 7.94 years. 78.3% of patients with positive exercise stress test had significant CAD. 96% of patients in group A had significant CAD, which was higher than in group B (88.9%) & group C (70.1%). The specificity, positive predictive value and negative predictive value of ST-segment depression in group A (96.92%, 96% and 25.2% respectively) were higher than that of ST-depression in group B (89.23%, 88.89% and 24.47% respectively) and group C (13.85%, 70.05% and 7.96% respectively). Sensitivity and accuracy of ST-depression in group A were lower (20.43% and 37% respectively), compared to other 2 groups.

Conclusion: Patient with ST-depression restricted to recovery phase had highest specificity, positive predictive value, and negative predictive value. However, accuracy was highest in group with both stress phase and exercise ST-segment depression.

Citing Articles

Brazilian Guideline for Exercise Test in the Adult Population - 2024.

Carvalho T, Freitas O, Chalela W, Hossri C, Milani M, Buglia S Arq Bras Cardiol. 2024; 121(3):e20240110.

PMID: 38896581 PMC: 11656589. DOI: 10.36660/abc.20240110.

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