Long-term oxygen therapy

Long-term oxygen therapy (LTOT) is an essential intervention for patients with chronic hypoxemia due to respiratory diseases such as COPD, interstitial lung disease, and pulmonary hypertension. The primary goal of LTOT is to improve oxygen saturation, reduce symptoms, prevent complications, and enhance survival. Candidates are typically identified through arterial blood gas analysis, pulse oximetry, and assessment of disease severity. Oxygen supplementation can be delivered via stationary or portable devices, with careful titration to maintain target oxygen levels while avoiding hyperoxia. Proper patient selection and adherence are critical to achieving optimal outcomes.

Beyond correcting hypoxemia, LTOT offers multiple physiologic and functional benefits. It reduces strain on the cardiovascular system, improves exercise tolerance, enhances sleep quality, and may decrease hospitalizations. Patient education on safe oxygen use, device maintenance, and lifestyle considerations, including smoking cessation, is essential. Multidisciplinary support, including respiratory therapists, pulmonologists, and home care teams, ensures ongoing monitoring, adherence, and prompt management of complications. Emerging technologies such as portable oxygen concentrators, telemonitoring, and adaptive oxygen delivery systems are improving patient mobility and quality of life. By combining clinical oversight, patient engagement, and technological advances, long-term oxygen therapy remains a cornerstone of care for patients with chronic respiratory failure and hypoxemia.