HSAT and PSG for Sleep Apnea Testing
Introduction: HSAT and PSG both investigate sleep apnea, yet they collect different signals, use different workflows, and support different clinical decisions. A home sleep apnea test makes selected overnight respiratory monitoring possible in a familiar setting. A laboratory polysomnogram, or PSG, combines respiratory measurements with a broader set of physiological signals under attended supervision. The important comparison involves more than home versus hospital. Test design affects the channels recorded, the estimation of sleep time, technical support, patient preparation, and professional interpretation. Understanding these differences clarifies when a home sleep test can support screening and when a laboratory study provides the broader information required for clinical assessment. How HSAT and PSG collect sleep information in different environments A laboratory PSG is an attended overnight study. The patient sleeps in a dedicated room while a technologist applies multiple sen...