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The Association Between Pleural Empyema and Peripheral Arterial Disease in Younger Patients: A Retrospective National
Tzu-Yuan Wang1,2, Hsin-Hung Chen3,4,5, Chun-Hung Su6,7
1Department of Internal Medicine, College of Medicine, China Medical University, Taichung, Taiwan.
Insights
Patients with pleural empyema (PE) face a higher risk of developing peripheral arterial disease (PAD). This risk is particularly elevated in younger individuals (under 49) and within two years of their PE diagnosis.
Area of Science:
- Cardiovascular Medicine
- Pulmonology
- Epidemiology
Background:
- Pleural empyema (PE) is a serious thoracic infection.
- Peripheral arterial disease (PAD) is a significant vascular condition.
- The association between PE and PAD risk requires further investigation.
Purpose of the Study:
- To examine the relationship between pleural empyema and the subsequent risk of developing peripheral arterial disease.
- To identify specific patient subgroups with a heightened risk of PAD following PE.
Main Methods:
- Retrospective cohort study utilizing the National Health Institute Research Database.
- Analysis of univariable and multivariable Cox's proportional hazard regressions.
- Kaplan-Meier method and log-rank tests for survival analysis.
Main Results:
- The incidence of PAD was higher in the PE cohort (2.76 per 1,000 person-years) versus the non-PE cohort (1.72 per 1,000 person-years).
- Patients with PE showed an increased risk of PAD (adjusted HR = 1.18).
- Significantly higher PAD risk was observed in PE patients aged ≤ 49 years (aHR = 5.34) and within 2 years post-PE diagnosis (aHR = 1.35).
Conclusions:
- Pleural empyema is associated with an elevated risk of peripheral arterial disease.
- Younger patients (≤ 49 years) with PE face a substantially higher risk of PAD.
- The risk of PAD is notably increased within the first two years following a PE diagnosis.
Abstract:
Background: To investigate the relationship between pleural empyema (PE) and peripheral arterial disease (PAD). Methods: We conducted a retrospective cohort study using data from the National Health Institute Research Database. Univariable and multivariable Cox's proportional hazard regressions were performed to investigate the association between PE and the risk of PAD. Kaplan-Meier method and the differences were assessed using a log-rank test. Results: The overall incidence of PAD was higher in the PE cohort than in the non-PE cohort (2.76 vs. 1.72 per 1,000 person-years) with a crude hazard ratio (HR) of 1.61 [95% confidence interval (CI) = 1.41-1.83]. After adjustment for age, gender, and comorbidities, patients with PE were noted to be associated with an increased risk of PAD compared with those without PE [adjusted HR (aHR) = 1.18, 95% CI = 1.03-1.35]. Regarding the age-specific comparison between the PE and non-PE cohorts, PAD was noted to be significantly high in the ≤ 49 years age group (aHR = 5.34, 95% CI = 2.34-10.1). The incidence of PAD was higher in the first 2 years, with an aHR of 1.35 (95% CI = 1.09-1.68) for patients with PE compared with those without PE. Conclusion: The risk of PAD was higher if patients with PE were younger than 49 years and within the 2-year diagnosis of PE.
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