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Blood pressure decrease during the acute phase of ischemic stroke is associated with brain injury and poor stroke

José Castillo1, Rogelio Leira, María M García

  • 1Department of Neurology, Hospital Clínico Universitario, University of Santiago de Compostela, Spain. mecasti@usc.es

Stroke
|January 17, 2004
PubMed
Summary

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Both high and low blood pressure (BP) levels, and significant BP drops, are linked to worse outcomes in acute ischemic stroke patients. Understanding these associations is crucial for improving stroke prognosis.

Area of Science:

  • Neurology
  • Cardiology
  • Clinical Medicine

Background:

  • Conflicting research exists on the relationship between blood pressure (BP) and stroke outcomes.
  • Acute stroke management requires understanding BP's impact on patient prognosis.

Purpose of the Study:

  • To investigate the association of systolic (SBP) and diastolic (DBP) blood pressure during acute stroke.
  • To determine the impact of BP on early neurological deterioration, infarct volume, neurological outcome, and 3-month mortality.

Main Methods:

  • A study involving 304 patients diagnosed with acute ischemic stroke.
  • BP measurements (SBP and DBP) were averaged from emergency department and 24-hour stroke unit recordings.

Main Results:

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  • A U-shaped association was observed for SBP and DBP with neurological deterioration, poor outcome, and mortality.
  • Both elevated and low BP levels correlated with increased infarct volume.
  • The prognostic significance of BP was diminished after adjusting for antihypertensive medication and significant BP drops, with BP drop being a key predictor.

    • Conclusions:

    • Elevated and low systolic and diastolic blood pressure are associated with adverse prognosis in ischemic stroke.
    • A significant drop in blood pressure within the first day is a critical factor predicting poor outcomes in stroke patients.