Research Hotspots and Future Trends of Oxygen Therapy for COPD: A Bibliometric and Visualization Analysis from 1973 to 2024

Oxygen therapy research for COPD has grown steadily since 1973. Keyword burst and temporal analyses indicate a recent shift of research focus from general oxygen supplementation toward modality-specific and context-specific strategies, including HFNC, exacerbation-related oxygen use, comorbidity-oriented management (eg, COPD-ILD overlap), and respiratory failure-related care, reflecting an increasing emphasis on precision and individualized oxygen therapy.