Troponin T elevation and long-term mortality after chronic obstructive pulmonary disease exacerbation
P H Brekke1, T Omland, S H Holmedal
1Dept of Medicine Akershus University Hospital, N-1478 Lørenskog, Norway. pal.brekke@ahus.no
The European Respiratory Journal
|November 23, 2007
Summary
Elevated cardiac-specific Troponin T (cTnT) levels during chronic obstructive pulmonary disease (COPD) exacerbations indicate a higher risk of death. This finding highlights the importance of monitoring cardiac biomarkers in COPD patients post-exacerbation.
Area of Science:
- Cardiology
- Pulmonology
- Biomarkers
Background:
- Patients with chronic obstructive pulmonary disease (COPD) face increased cardiovascular disease risk.
- COPD exacerbations significantly strain the heart, potentially leading to cardiac events.
Purpose of the Study:
- To investigate the prognostic value of elevated cardiac Troponin T (cTnT) levels in patients following a COPD exacerbation.
- To determine if elevated cTnT during exacerbation predicts mortality after hospital discharge.
Main Methods:
- Retrospective analysis of 897 patients discharged after COPD exacerbation (2000-2003).
- Cardiac-specific troponin T (cTnT) levels measured in 396 patients; elevated defined as >/=0.04 mug.L(-1).
- Exposure propensity score (EPS) used to adjust for non-randomized cTnT measurements in Cox regression analyses.
Main Results:
- Elevated cTnT levels were significantly associated with increased all-cause mortality.
- Adjusted hazard ratio for all-cause mortality in patients with elevated cTnT was 1.64 (95% CI 1.15-2.34).
- Median follow-up was 1.9 years.
Conclusions:
- Elevated cardiac-specific Troponin T during COPD exacerbation is a significant predictor of increased mortality risk post-discharge.
- Monitoring cTnT may aid in risk stratification for COPD patients after exacerbations.
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