Peripheral Blood Eosinophil as a Biomarker in Outcomes of Acute Exacerbation of Chronic Obstructive Pulmonary Disease

© 2019 Wu et al..

Purpose: Mounting evidence suggests that eosinophil levels correlate with the effects of therapy and phenotype for chronic obstructive pulmonary disease (COPD). This study aimed to clarify the relationship between eosinophil levels and clinical outcomes in patients with acute exacerbation of COPD (AECOPD).

Methods: A prospective, multicenter, observational cohort study was performed in three teaching hospitals. Patients were grouped by quartile percentage (0, 0.7, 2.55) and absolute blood eosinophils count (0, 0.05×109/L, 0.17×109/L) and divided into four numbered groups ranked from low to high.

Results: The study included 493 AECOPD patients. In the percentile-ranked groups, patients in Group 1 experienced significantly longer hospital stays, higher rates of both noninvasive mechanical ventilation (NIMV), and heart failure than those in Group 4 (12 days vs 10 days, p = 0.005; 29.5% vs 23.6%, p = 0.007; 48.4% vs 28.5%, p = 0.001). Group 1 also had higher frequencies of respiratory failure and pulmonary heart disease compared to Groups 3 and 4 (54.8% vs 34.8%, p = 0.002; 54.8% vs 35%, p = 0.003). In the absolute count-ranked groups, patients in Group 1 had significantly higher rates of NIMV than those in Group 3 (41.1% vs 21.7%, p = 0.001), had higher rates of heart failure, respiratory failure, and pulmonary heart disease than those in Group 3 and 4 (48.1% vs 30.2%, p = 0.003; 48.1% vs 30.4%, p = 0.005; 50.8% vs 32.2%, p = 0.004; 50.8% vs 34.1%, p = 0.008; 51.9% vs 34.1%, p = 0.004; 51.9% vs 33%, p = 0.003). There were outcome differences among the admitting hospital of stays in the absolute count groups (p = 0.002), but the differences were not significant in a pairwise comparison. The proportion of ICU admissions and mortality was different in two cohorts with no difference in a pairwise comparison.

Conclusion: Patients with lower eosinophil counts experienced poorer clinical outcomes. Eosinophil levels may be a helpful marker to predict outcomes in AECOPD.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

International journal of chronic obstructive pulmonary disease - 14(2019) vom: 03., Seite 3003-3015

Sprache:

Englisch

Beteiligte Personen:

Wu, Hong-Xia [VerfasserIn]
Zhuo, Kai-Quan [VerfasserIn]
Cheng, De-Yun [VerfasserIn]

Links:

Volltext

Themen:

Biomarkers
Chronic obstructive pulmonary disease
Eosinophils
Exacerbation
Journal Article
Mortality
Multicenter Study
Observational Study

Anmerkungen:

Date Completed 09.07.2020

Date Revised 09.07.2020

published: Electronic-eCollection

Citation Status MEDLINE

doi:

10.2147/COPD.S226783

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM305195328