Prognostic Value of Self-Reported Subjective Exercise Capacity in Patients With Acute Dyspnea

Overview

Journal JACC Adv

Specialty Cardiology & Vascular Diseases

Date 2024 Jun 28

PMID 38939580

Authors

Maria Belkin

Desiree Wussler

Eleni Michou

Ivo Strebel

Nikola Kozhuharov

Zaid Sabti

Albina Nowak

Samyut Shrestha

Pedro Lopez-Ayala

Alexandra Prepoudis

Sabrina Stefanelli

Ibrahim Schafer

Constantin Mork

Miriam Albus

Isabelle Danier

Cornelia Simmen

Tobias Zimmermann

Matthias Diebold

Tobias Breidthardt

Christian Mueller

Affiliations

Soon will be listed here.

Abstract

Background: Self-reported exercise capacity is a well-established prognostic measure in stable ambulatory patients with cardiac and pulmonary disease.

Objectives: The authors aimed to directly compare the prognostic accuracy of quantified self-reported exercise capacity using the Duke Activity Status Index (DASI) with the established objective disease-severity marker B-type natriuretic peptide (BNP) in patients presenting with acute dyspnea to the emergency department.

Methods: The DASI was obtained in a prospective multicenter diagnostic study recruiting unselected patients presenting with acute dyspnea to the emergency department. The prognostic accuracy of DASI and BNP for 90-day and 720-day all-cause mortality was evaluated using C-index.

Results: Among 1,019 patients eligible for this analysis, 75 (7%) and 297 (29%) patients died within 90 and 720 days after presentation, respectively. Unadjusted hazard ratios (HRs) and multivariable adjusted hazard ratios (aHRs) for 90- and 720-day mortality increased continuously from the fourth (best self-reported exercise capacity) to the first DASI quartile (worst self-reported exercise capacity). For 720-day mortality the HR of the first quartile vs the fourth was 9.1 (95% CI, 5.5-14.9) vs (aHR: 6.1, 95% CI: 3.7-10.1), of the second quartile 6.4 (95% CI: 3.9-10.6) vs (aHR: 4.4, 95% CI: 2.6-7.3), while of the third quartile the HR was 3.2 (95% CI: 1.9-5.5) vs (aHR: 2.4, 95% CI: 1.4-4.0). The prognostic accuracy of the DASI score was high, and higher than that of BNP concentrations (720-day mortality C-index: 0.67 vs 0.62; = 0.024).

Conclusions: Quantification of self-reported subjective exercise capacity using the DASI provides high prognostic accuracy and may aid physicians in risk stratification. (Basics in Acute Shortness of Breath EvaLuation [BASEL V] Study [BASEL V]; NCT01831115).

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