Characteristics of Heart Rate Reduction with Resumption of Supine Position in the Postural Tachycardia Syndrome: Factors Influencing Recovery

摘要

Objectives:Postural orthostatic tachycardia syndrome (POTS), a heart rate (HR) rise with upright positioning,is dependent on autonomic influences. HR recovery (HR decrease after exercise cessation) is a measure of autonomicfunction. Characteristics of HR reduction during supine Recovery after head-up Tilt in POTS patients have not been elucidated.