Pulmonology

Even low COPD exacerbation burden marks higher future risk and worse CT disease

In this 3-year community-based COPD cohort (n=915), even mild or a single moderate prior-year exacerbation predicted worse prognosis than none. Patients with only mild exacerbations had more severe emphysema on CT, while those with a single moderate event had greater air trapping. Both mild and single moderate exacerbation groups had higher subsequent total and moderate-to-severe exacerbation incidence than those without exacerbations (RRs around 1.7–2.3). Despite this, annual lung function decline did not differ significantly by exacerbation pattern over follow-up. 1

Higher antifibrotic adherence and full-dose nintedanib associate with better IPF outcomes

This nested case-control analysis of IPF patients on antifibrotics linked treatment patterns to mortality and hospitalization risk. Good adherence (PDC ≥0.75) was associated with lower mortality (OR 0.563) regardless of drug, and fewer hospitalizations overall (OR 0.692). Dose reduction increased mortality (OR 1.57) and hospitalization (OR 1.667) among nintedanib initiators, but not pirfenidone starters. These findings support aggressive adverse event management and multidisciplinary adherence support rather than routine long-term nintedanib dose de-escalation. 2

Pulmonary telerehabilitation matches center-based PR for short-term COPD outcomes, with variable performance by model

This systematic review and meta-analysis included 17 RCTs (n=1658) comparing pulmonary telerehabilitation or home-based PR with center-based PR in COPD. Overall, Tele-PR achieved similar short-term 6-minute walk gains to center-based PR (mean difference −5.37 m; 95% CI −15.68 to 4.95). Digitally supported, synchronously supervised Tele-PR showed more consistent benefits across studies than low-technology, largely unsupervised home programs. Longer-term (≥6 months) differences in functional and symptom outcomes between Tele-PR and center-based PR largely disappeared. 3

Continuous high-frequency oscillation improves airway mechanics in ventilated patients with heavy secretions

This randomized ICU trial enrolled 46 mechanically ventilated adults with excessive airway secretions to receive either 10 minutes of CHFO plus suction or suction alone. Compared with control, CHFO produced larger reductions in airway resistance at 1 and 3 hours post-intervention and greater increases in respiratory system compliance. CHFO also increased dorsal lung ventilation on electrical impedance tomography relative to standard suctioning, suggesting improved ventilation distribution. Oxygenation indices did not differ between groups, indicating primarily mechanical rather than gas-exchange benefits over the short observation window. 4