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Flow-Mediated Vasodilation as a Predictor of Therapeutic Response to Midodrine Hydrochloride in Children With Postural Orthostatic Tachycardia Syndrome

HypertensionCardiovascular DiseaseMedicineMidodrine HydrochloridePhysiologyCardiovascular PharmacologyTherapeutic ResponseCardiovascular PhysiologyPharmacologyCardiologyDiastolic FunctionFlow-mediated Vasodilation