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Chronic obstructive pulmonary disease (COPD) often coexists with many diseases that require bronchoscopy. We conducted this systematic review and meta-analysis to assess the safety and complication rate of diagnostic bronchoscopy in patients with COPD. We retrieved clinical trials that reporting the complications of conducting diagnostic bronchoscopy on patients with COPD through electronic databases. Analyses of the overall major complication rate of bronchoscopy and potential risk factors in patients with COPD were conducted. 18 trials/arms were evaluated. The overall major complication rate of bronchoscopy was 4.3% (95% CI, 2.2%-8.2%; 18 trials/arms, n = 2000). The major complication rate of the patients with an exacerbation of COPD was higher than that of the stable patients (7.8% vs. 4.5%, Q-value = 11.29, df (Q) = 1,  p  &lt; 0.01); using of sedative medicine was also related with higher major complication rate (Q-value = 6.303, df (Q) = 2,  p  = 0.043). Patients with severe COPD who were GOLD stages III and IV (Q = 13.40, df = 1,  p  &lt; 0.01; R 2  = 0.66) or had a high BMI (Q = 30.83, df = 1,  p  &lt; 0.01; R 2  = 0.91) more easily encountered complications during bronchoscopy. The major complication rate of diagnostic bronchoscopy in patients with COPD was acceptable and low Exacerbations of COPD and using sedative medicine were related with higher major complication rate. COPD is a major risk factor for lung cancer and infection, so the patients with COPD often required bronchoscopy. Although our results showed diagnostic bronchoscopy might not be more fatal for patients with COPD, further studies are needed to explore the potential risk factors for major complications of bronchoscopy in patients with COPD.

Complications and safety analysis of diagnostic bronchoscopy in COPD: a systematic review and meta-analysis