Early rehabilitation trajectories and influencing factors in elderly patients with severe pneumonia and sarcopenia after bronchoscopy treatment: A single-center retrospective cohort study

Objective To systematically evaluate the characteristics of early rehabilitation trajectories in elderly patients with severe pneumonia complicated by sarcopenia after bronchoscopy treatment and identify key factors associated with the rehabilitation process. Methods A single-center retrospective cohort study design was adopted, including 183 elderly patients with severe pneumonia complicated by sarcopenia after bronchoscopy treatment admitted from January 2021 to June 2024. Based on the improvement in FIM scores at 28 days post-surgery, patients were divided into rapid recovery group (improvement ≥30 points), slow recovery group (improvement 10-29 points), and recovery stagnation group (improvement