Myalgic Encephalomyelitis / Chronic Fatigue Syndrome (ME/CFS) is a complex disorder that may be triggered by infection or other stressors (e.g., emotional or physical trauma, immune activation, chemical exposures). Its hallmark is a reduced capacity for physical and mental activity manifest as
Postural Tachycardia Syndrome (POTS) is a disabling condition that mostly affects young women in their reproductive age. It is characterized by chronic (>6 months) orthostatic intolerance symptoms (palpitation, lightheadedness, blurred vision and mental clouding) triggered by assuming an upright
Study Objectives and Hypotheses
Primary Objective
The primary objectives of this study are to understand the in vivo effects of dehydration on:
1. Sympathetic neural control of cardiovascular function (MSNA), and
2. Neuromuscular function (CAC) via the IT Test
The primary hypotheses of this study
Dysautonomia resulting in decreased HRV and impaired BRS, which may be accompanied by supine hypertension, is known to play a role in the development and progression of hypertension, which can lead to hypertensive heart disease including left ventricular hypertrophy and congestive heart failure as
The pathophysiological basis of postural tachycardia syndrome (POTS) is not well elucidated. The most widely recognized primary cause of POTS is a "restricted" or "selective" peripheral neuropathy - neuropathic POTS. Several lines of evidence point to a restricted peripheral neuropathy, specifically
Chronic orthostatic intolerance due to the postural tachycardia syndrome (POTS) severely impairs daily life in over a million Americans, mostly young women. POTS is defined by symptoms of orthostatic intolerance associated with excessive upright heart rate. While there is general agreement that
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