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Baroreflex failure: a neglected type of secondary hypertension

H J L M Timmers1, W Wieling, J M Karemaker

  • 1Department of Internal Medicine, University Medical Centre St Radboud, PO Box 9101, 6500 HB Nijmegen, The Netherlands. H.Timmers@aig.umcn.nl

The Netherlands Journal of Medicine
|September 16, 2004
PubMed

Insights

Baroreflex failure, caused by carotid baroreceptor denervation, leads to severe hypertension and blood pressure instability. Early diagnosis and specialized care are crucial for managing this condition.

Area of Science:

  • Cardiovascular Physiology
  • Autonomic Nervous System Regulation
  • Clinical Hypertension

Background:

  • The arterial baroreflex is essential for buffering blood pressure fluctuations.
  • Baroreceptor denervation in animals increases blood pressure and variability.
  • Clinical baroreflex failure can result from carotid baroreceptor damage.

Purpose of the Study:

  • To describe the clinical syndrome of baroreflex failure.
  • To highlight its causes and clinical manifestations.
  • To emphasize its importance in hypertension diagnosis.

Main Methods:

  • Review of clinical cases and literature on baroreflex failure.
  • Analysis of symptoms including hypertension, tachycardia, and labile blood pressure.
  • Differential diagnosis considerations with pheochromocytoma.

Main Results:

  • Baroreflex failure presents with acute malignant hypertension and tachycardia.
  • Subsequent symptoms include labile hypertension and hypotension.
  • It can mimic or be a cause of hypertension.

Conclusions:

  • Baroreflex failure is a significant cause of hypertension.
  • It requires consideration in the differential diagnosis of hypertension and pheochromocytoma.
  • Referral to specialized centers for diagnosis and treatment is recommended.

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