Clearing the Air: Impact of COPD on Inhalation Injury Outcomes

Chronic obstructive pulmonary disease (COPD) involves airway obstruction and emphysema, leading to air trapping and shortness of breath. COPD may impair healing in patients with inhalation injuries, where there can be significant airway damage. This study examines the effect of COPD comorbidity on short-term clinical outcomes for patients with inhalation injuries sustained from residential or structure fires. A 12-year retrospective analysis was conducted utilizing patient records from a single burn center. Outcome variables, including hospital length of stay, ventilator days, and complications, were compared between patients with or without a prior diagnosis of COPD. One hundred eighty-four patients were diagnosed with inhalation injury via bronchoscopy, 69 (37.5%) of whom had COPD. These patients were older (P < .001) and more likely to be current smokers (P < .001). COPD did not predict a difference in hospital days (P = .060), ventilator days (P = .487), or complication rates. Moreover, COPD did not increase mortality risk (OR = 0.61, 95% CI: 0.24-1.53, P = .297). Instead, carbon monoxide poisoning arose as the predominant risk factor of mortality (OR = 3.80, 95% CI: 1.41-10.25, P = .008). Although the mortality rate was the same regardless of COPD status, among patients who died, those with obstructive disease survived 6.0 days longer (P = .007). These findings suggest that COPD does not independently worsen short-term outcomes following fire-related inhalation injuries. Rather, factors such as systemic toxicity and burn severity play a more significant role in prognosis. While COPD patients who died had a slightly longer survival period, further investigation is needed to determine whether this reflects a protective effect of COPD-related treatments or heightened medical intervention.