CHAOSTOCOSMOS

Friday, 15 March 2013

The Postural Tachycardia Syndrome (POTS): Pathophysiology, Diagnosis & Management

Postural tachycardia syndrome (POTS), characterized by orthostatic tachycardia in the absence of orthostatic hypotension, has been the focus of increasing clinical interest over the last 15 years 1. Patients with POTS complain of symptoms of tachycardia, exercise intolerance, lightheadedness, extreme fatigue, headache and mental clouding. Patients with POTS demonstrate a heart rate increase of ≥30 bpm with prolonged standing (5-30 minutes), often have high levels of upright plasma norepinephrine (reflecting sympathetic nervous system activation), and many patients have a low blood volume. POTS can be associated with a high degree of functional disability. Therapies aimed at correcting the hypovolemia and the autonomic imbalance may help relieve the severity of the symptoms. This review outlines the present understanding of the pathophysiology, diagnosis, and management of POTS.

The Postural Tachycardia Syndrome (POTS): Pathophysiology, Diagnosis & Management

(NB: Or in my case, often with "prolonged standing" of less than 30 seconds.)
Pamela is a former accountant, recovering journalist and international cat herder, disabled and chronically sick with Myalgic Encephalomyelitis, Fibromyalgia and Cervical spondylosis, fluent in three languages; English, Spanish and Rubbish. Mostly writes in the latter. She likes Genealogy, Model Railways and Cats.

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