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[Autonomic nervous system examinations].

Eiichi Watanabe1, Itsuo Kodama

  • 1Division of Cardiology, Department of Internal Medicine, Fujita Health University School of Medicine.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|July 26, 2002
PubMed
Summary

Autonomic nervous system testing, including heart rate variability and cardiac MIBG imaging, aids in predicting cardiovascular disease prognosis. Baroreflex sensitivity offers superior prediction for post-myocardial infarction patients.

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Area of Science:

  • Cardiology
  • Autonomic Neuroscience
  • Medical Imaging

Background:

  • The autonomic nervous system is crucial for cardiovascular regulation.
  • Various methods exist to assess autonomic function.
  • These assessments have prognostic value in heart disease.

Purpose of the Study:

  • To review autonomic nervous system examinations for cardiovascular assessment.
  • To highlight the prognostic significance of these tests.

Main Methods:

  • Heart rate variability (HRV) analysis from ECG (short/long-term).
  • Baroreflex sensitivity (BRS) testing via blood pressure/ECG response to vasoactive drugs.
  • Cardiac 123I-metaiodobenzylguanidine (MIBG) imaging to visualize sympathetic innervation.

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Main Results:

  • HRV analysis predicts prognosis in various heart conditions.
  • Decreased BRS is a stronger predictor of poor prognosis post-myocardial infarction than HRV.
  • Cardiac MIBG uptake predicts survival and aids in assessing arrhythmogenic potential.

Conclusions:

  • Autonomic nervous system examinations are vital for cardiovascular prognosis.
  • BRS and MIBG imaging offer significant predictive capabilities.
  • These tests are valuable for managing patients with heart disease and arrhythmias.