Quality of routine spirometry tests in Dutch general practices

Area of Science:

• Pulmonary Medicine
• Primary Care Diagnostics

Background:

• Spirometry is crucial for diagnosing and monitoring chronic airways disease in primary care settings.
• Evaluating the quality of routine spirometry tests is essential for reliable patient management.

Purpose of the Study:

• To assess the quality of spirometry tests conducted in general practice.
• To investigate how patient characteristics (age, sex, obstruction severity) correlate with spirometry test quality.

Main Methods:

• Analysis of 1271 routine spirometry test records from 15 general practices.
• Tests were evaluated by pulmonary function technicians and chest physicians using 1994 American Thoracic Society guidelines for acceptability and reproducibility.
• Logistic regression was employed to examine associations between quality markers and patient demographics/disease severity.

Main Results:

• Overall, 38.8% of spirometry tests met both acceptability and reproducibility criteria.
• Adequate forced expiratory time was the least acceptable marker, observed in only 60.6% of tests.
• Test quality was significantly associated with patient age, sex, and the severity of airway obstruction.

Conclusions:

• While spirometry quality in primary care has improved, significant room for enhancement remains.
• Forced expiratory time duration is a key area for quality improvement.
• Healthcare providers should consider patient-specific factors that may impact spirometry test quality and clinical interpretation.