The Role of Tuberculosis in Chronic Obstructive Lung Disease

NCT ID: NCT02759848

Last Updated: 2016-05-03

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 598 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2012-01-31
• Study Completion Date: 2014-12-31

Brief Summary

Influence of tuberculosis (TB) on natural course of chronic obstructive lung disease (COPD) has not been well known. This study was designed to investigate the effects of history of TB on the long-term course of COPD.

Detailed Description

Patients hospitalized with COPD exacerbation were consecutively included (n=598). Cases were classified into two categories: those with a history of TB and those without. Clinical, demographic, and radiological features were meticulously recorded and patients were followed up for mortality. 93 patients (15%) had past TB. On average, patients with a history of TB were four-year younger (p=0.002). Our study revealed that patients with TB history were diagnosed with COPD five-year earlier and died five-year earlier as compared to the patients without TB. In addition, in the TB history positive group, the rate of hospital admissions per year was higher compared to the group that lacked TB history (2.46±0.26 vs. 1.56±0.88; p=0.001). The patients with TB history had higher PaCO2 and lower FEV1 (p=0.008 and p=0.069 respectively). Median survival was 24 months for patients with past TB, and was 36 months for those without. Kaplan-Meier analysis revealed that although 3-year survival rate was lower in patients with TB history, it was not statistically significant (p=0.08). Cox regression analysis showed that while factors such as age, PaCO2, hematocrit, BMI and the Charlson index affected mortality rates in COPD patients (p<0.05), prior history of TB did not seem to have a significant impact on the mortality.

Our results showed that past TB caused more hospitalizations, lower respiratory functions and higher arterial carbon dioxide levels. It was found that, though the mortality rates were similar, COPD patients with past TB was diagnosed and died five-year earlier. We conclude that history of TB has an important role in natural course of COPD.

Conditions

The Role of Tuberculosis in COPD

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

with history of TB

No interventions assigned to this group

without history of TB

No interventions assigned to this group

Eligibility Criteria

Inclusion Criteria

• Being diagnosed with COPD exacerbations

Exclusion Criteria

• Not diagnosed with COPD exacerbations

• Minimum Eligible Age: 40 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Istanbul Medeniyet University

OTHER

Sponsor Role: lead

Responsible Party

Halil İbrahim Yakar

Halil İbrahim Yakar

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Halil I Yakar, Md

Role: PRINCIPAL_INVESTIGATOR

Halil Ibrahim Yakar

Other Identifiers

TROTIC-1234-TROTIC

Identifier Type: -

Identifier Source: org_study_id