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One-year mortality after severe COPD exacerbation in Bulgaria
Evgeni Mekov1, Yanina Slavova1, Adelina Tsakova2
1Clinical Center for Pulmonary Diseases, Medical University-Sofia , Sofia , Bulgaria.
Peerj
|December 21, 2016
Summary
One-year mortality after severe COPD exacerbation is 7.2%. Key risk factors for increased mortality include older age, lower FEV1, prior severe exacerbations, and reduced quality of life.
Area of Science:
- Pulmonology
- Critical Care Medicine
- Epidemiology
Background:
- One-year mortality in Chronic Obstructive Pulmonary Disease (COPD) patients varies widely (4%-43%).
- Severe exacerbations significantly impact COPD patient outcomes and survival.
- Understanding mortality predictors post-exacerbation is crucial for patient management.
Purpose of the Study:
- To determine one-year mortality rates in COPD patients following severe exacerbation.
- To identify correlations between mortality and patient characteristics, comorbidities, and disease severity.
Main Methods:
- A cohort of 152 COPD patients hospitalized for severe exacerbation was studied.
- Data collected included vitamin D status, diabetes mellitus (DM), arterial hypertension (AH), metabolic syndrome (MS), smoking history, prior exacerbations, spirometry (FEV1, PEF), and quality of life (CAT, mMRC).
- One-year mortality was tracked via the national death register.
Main Results:
- The one-year mortality rate was 7.2%.
- Arterial hypertension showed a trend towards increased mortality (p=0.107).
- Higher mMRC scores (mMRC > 2), prior severe exacerbations, and lower FEV1 (<50%) were associated with increased mortality (p<0.05).
- Age, FEV1, PEF, CAT score, and prior severe exacerbations were significant predictors of mortality via Cox regression (p<0.05).
Conclusions:
- One-year mortality after severe COPD exacerbation is relatively low (7.2%) for survivors.
- Factors indicating a good prognosis include GOLD Grade C and FEV1 > 80%.
- Age, reduced FEV1, previous severe exacerbations, and lower quality of life are significant risk factors for mortality.
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