Diagnostics World | For decades now, doctors have been referring people suspected of having obstructive sleep apnea to a specialized medical facility for a polysomnogram (PSG). The gold-standard overnight test collects millions of data points from across the body, only a small subset of which gets prioritized for scoring the severity of the condition—notably, the apnea-hypopnea index (AHI) ranking how often their breathing slows or stops per hour of sleep.
