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Cerebrovascular damage in hypertension

S Strandgaard1, O B Paulson

  • 1Department of Medicine and Nephrology B, Herlev Hospital, Copenhagen, Denmark.

Journal of Cardiovascular Risk
|February 1, 1995
PubMed
Summary

Antihypertensive treatment effectively reduces stroke risk in hypertensive patients. However, very aggressive treatment can sometimes lead to cerebral ischemia, highlighting the need for careful blood pressure management.

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Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Cerebrovascular Disease

Background:

  • Hypertension induces significant adaptive changes in cerebral circulation.
  • High blood pressure is a major risk factor for stroke and transient ischemic attacks.
  • The relationship between hypertension and white-matter lesions (leukoaraiosis) requires further elucidation.

Purpose of the Study:

  • To review the effects of hypertension on cerebral circulation.
  • To assess the impact of antihypertensive treatment on stroke and transient ischemic attack risk.
  • To discuss potential adverse effects of antihypertensive therapy on the brain.

Main Methods:

  • Literature review of studies on hypertension and cerebral circulation.
  • Analysis of controlled trials evaluating antihypertensive treatments.
  • Examination of case reports and studies on hypertensive complications.

Main Results:

  • Antihypertensive treatment eliminates the excess stroke risk associated with hypertension.
  • Treatment can prevent transient ischemic attacks in the elderly.
  • Overly aggressive treatment may paradoxically cause cerebral ischemia, particularly in severe hypertension.
  • Severe hypertension can cause headaches and acute hypertensive encephalopathy.

Conclusions:

  • Controlled antihypertensive therapy is crucial for stroke prevention in hypertensive individuals.
  • Careful titration of antihypertensive medication is necessary to avoid iatrogenic cerebral ischemia.
  • Further research is needed to clarify the role of leukoaraiosis in hypertension.

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