[Long-term oxygen therapy in Switzerland]

Area of Science:

• Pulmonary Medicine
• Respiratory Care
• Medical Guideline Compliance

Background:

• Long-term oxygen treatment (LTOT) is a cornerstone therapy for chronic hypoxemia.
• In Switzerland, LTOT is primarily managed via oxygen concentrators supplied by the Swiss Association against Tuberculosis and Pulmonary Diseases.
• Adherence to established prescription guidelines is crucial for optimizing patient outcomes and resource allocation.

Purpose of the Study:

• To evaluate the compliance with LTOT guidelines in Switzerland.
• To analyze prescription patterns concerning diagnoses, lung function, and blood gas parameters.
• To identify discrepancies in LTOT prescribing practices.

Main Methods:

• Retrospective analysis of 447 LTOT patient prescription forms from 1981-1985.
• Inclusion of data on diagnoses, lung function tests, and arterial blood gas (PaO2) measurements.
• Categorization of diagnoses into COPD, restrictive syndromes, and cardiovascular diseases.

Main Results:

• Of 398 diagnoses, 73% were COPD, 16% restrictive syndromes, and 11% cardiovascular diseases.
• Lung function data were available for 81% of patients, but less for non-COPD groups (73% and 67%).
• Blood gas data (PaO2) were frequently provided, but prescription criteria were not consistently met, especially in non-COPD patients, suggesting prescription based on clinical judgment over objective measures.

Conclusions:

• LTOT prescription guidelines are not uniformly followed in Switzerland, particularly for non-COPD patients.
• The study suggests LTOT is sometimes prescribed based on clinical assessment rather than strict PaO2 criteria, potentially leading to inappropriate use.
• Enhanced education for physicians on LTOT guidelines is recommended to ensure appropriate patient selection for this resource-intensive therapy.