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Sleep Apnea Test Bias Found in Black Patients
5 Nov
Summary
- A common sleep apnea test may be less accurate for Black patients.
- Oxygen-based scoring counted fewer breathing events in Black individuals.
- Heart-rate-based scoring showed no racial differences in findings.
A standard test for obstructive sleep apnea may be less accurate for Black patients, potentially leading to misdiagnosis and impacting crucial treatment plans. This diagnostic tool often relies on pulse oximeters to measure blood oxygen levels and gauge the severity of sleep apnea.
Recent findings from a study published in the American Journal of Respiratory and Critical Care Medicine revealed that oxygen-based scoring methods counted approximately 20% fewer breathing events in Black participants than in their white counterparts. Conversely, heart-rate-based scoring demonstrated no such racial disparities.
Researchers emphasize that while earlier studies suggested potential inaccuracies of pulse oximeters on darker skin tones, this study cannot definitively prove the device is the sole cause. They advise that normal or borderline results in Black patients, especially when symptoms like loud snoring, gasping, or daytime exhaustion are present, should be carefully evaluated. Conditions such as high blood pressure or diabetes also warrant close attention.
Ali Azarbarzin, the study's lead author from Mass General Brigham in Boston, stated that the goal is not to establish race-based diagnostic thresholds but to ensure the accuracy and reliability of the underlying measurements for all individuals. The study's findings have significant implications for how sleep apnea is diagnosed and classified.
