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Quantitative studies of autonomic function.

Max J Hilz1, Matthias Dütsch

  • 1Department of Neurology, New York University Medical Center, 550 First Avenue, Suite NB 7W11, New York, NY 10016, USA. max.hilz@med.nyu.edu

Muscle & Nerve
|June 21, 2005
PubMed
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Quantitative autonomic function tests are crucial for diagnosing and monitoring autonomic failure. This review covers standard cardiovascular and sudomotor tests for clinical evaluation and research applications.

Area of Science:

  • Neuroscience
  • Physiology

Background:

  • Autonomic nervous system dysfunction is prevalent in various neurological and medical conditions.
  • Accurate assessment of autonomic function is vital for diagnosing autonomic failure and guiding treatment.

Purpose of the Study:

  • To review standard and advanced quantitative tests for assessing sympathetic and parasympathetic nervous system function.
  • To highlight the clinical utility of cardiovascular and sudomotor function tests.

Main Methods:

  • Focus on established tests: heart-rate variability (HRV), Valsalva maneuver, active standing, and sympathetic skin response.
  • Discuss advanced research methods: spectral analysis of HRV and blood pressure, baroreflex testing, thermoregulatory sweat test, quantitative sudomotor axon reflex test, and microneurography.

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Main Results:

  • Standard tests are effective for routine clinical evaluation, particularly in peripheral neuropathies.
  • Advanced techniques provide detailed insights into autonomic control mechanisms for research.

Conclusions:

  • Quantitative assessment of autonomic function is essential for diagnosis, follow-up, and treatment monitoring.
  • A range of tests, from routine to specialized, are available to evaluate autonomic nervous system integrity.