Cognitive Dysfunction in Postural Tachycardia Syndrome

Status Completed

Clinical Trial Summary

A common complaint among people with Postural Tachycardia Syndrome (POTS) is "brain fog" or difficulty concentrating. This is very poorly understood. To better understand this cognitive dysfunction, the investigators will test people with POTS and people without POTS using various neuropsychiatric instruments. The investigators hypothesis is that people with POTS will have greater abnormalities on neuropsychiatric testing than normal controls.

Clinical Trial Description

Postural Tachycardia Syndrome (POTS) is a disorder that affects an estimated 500,000 people in the United States alone and is an important source of disability in young adults. It shows a strong predilection for females. POTS is a form of orthostatic intolerance characterized by an excessive increase in heart rate (>30 bpm) on assuming the upright position associated with orthostatic symptoms, but in the absence of orthostatic hypotension. Their symptoms of dizziness, nausea, tremor, chronic fatigue and exercise intolerance make even simple activities of daily living exhausting prospects.

Brain fog or cognitive dysfunction is a common and almost universal complaint among persons with POTS. There is a lack of pathophysiological understanding to this cognitive dysfunction and is also a major roadblock to the development of effective therapies for people with POTS.

The purpose of this study is to better define the cognitive dysfunction seen in patients with POTS. We will use a series of validated neuropsychological tools in order to characterize POTS cognitive dysfunction and compare this data to age and gender matched control subjects.

Specific Aims:

1. To assess whether POTS patients have more neuropsychological abnormalities than control subjects during seated assessments.

2. To assess whether POTS patients have more neuropsychological abnormalities than control subjects during assessments while standing.

3. To ascertain the phenomenology of any neuropsychological deficits distinguishing POTS patients from controls. ;

Study Design

Observational Model: Case Control, Time Perspective: Prospective

Related Conditions & MeSH terms

Cognition Disorders
Postural Orthostatic Tachycardia Syndrome
Postural Tachycardia Syndrome
Syndrome
Tachycardia

Clinical Trial Details

NCT number	NCT01366963
Study type	Observational
Source	Vanderbilt University
Contact
Status	Completed
Phase	N/A
Start date	March 2011
Completion date	June 2015

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.