History of Pulmonary Tuberculosis Accelerates Early Onset and Severity of COPD: Evidence from a Multicenter Study in Romania.

Pulmonary tuberculosis (TB) is increasingly recognized as a risk factor for chronic obstructive pulmonary disease (COPD), but its impact on COPD onset and severity remains poorly characterized, particularly in low- and middle-income countries. This multicenter study aimed to assess the impact of prior pulmonary TB on COPD onset, severity, the timing of the first severe exacerbation, and progression among Romanian patients with and without a history of pulmonary TB. : This retrospective multicenter study included adults hospitalized for their first severe COPD exacerbation at two tertiary care centers in Romania between April 2020 and April 2025. Patients were grouped based on smoking status and prior TB history. Propensity score matching was used to control for confounding factors. Clinical characteristics, spirometry, and radiological TB patterns were analyzed comparatively between patients with prior TB and TB-naïve patients. : Among 403 COPD patients, those with prior TB had significantly earlier COPD onset (mean age 48.67 ± 6.42 vs. 65.61 ± 5.14 years in smokers, < 0.001) and shorter intervals to their first severe COPD exacerbation compared to patients without prior TB (6.35 ± 4.71 vs. 15.14 ± 6.93 years in smokers, < 0.001). COPD prevalence was higher among TB survivors compared to those without TB history, especially in smokers (OR = 5.73; 95% CI, 3.30-9.94, < 0.001), versus non-smokers (OR =2.23; 95% CI, 1.37-3.64, = 0.001). Radiological severity of TB lesions significantly influenced COPD prevalence among smokers (OR = 10.79, < 0.001). Prior pulmonary TB substantially accelerates COPD onset, exacerbation timing, and disease severity, particularly in smokers. This multicenter comparative study demonstrates that prior pulmonary TB significantly accelerates COPD onset, exacerbation timing, and disease severity, especially among smokers. Recognizing TB history as a significant COPD risk factor underscores the importance of targeted COPD screening and tailored management in populations with high TB prevalence.