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Relation of left ventricular hypertrophy to regional cerebral blood flow: single photon emission computed tomography

Cristina Sierra1, Alejandro de la Sierra, Francisco Lomeña

  • 1Hypertension Unit, Department of Internal Medicine, Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), Hospital ClAnic, University of Barcelona, Spain. csierra@clinic.ub.es

Journal of Clinical Hypertension (Greenwich, Conn.)
|October 10, 2006
PubMed

Insights

Left ventricular hypertrophy (LVH) is linked to reduced cerebral blood flow in middle-aged hypertensive patients. Specifically, LVH is associated with decreased blood flow in the striatum area, a key brain region.

Area of Science:

  • Cardiology
  • Neurology
  • Hypertension Research

Background:

  • Left ventricular hypertrophy (LVH) is a recognized independent predictor of acute cerebrovascular events.
  • Essential hypertension is a common condition in middle-aged adults, often associated with cardiovascular changes.

Purpose of the Study:

  • To investigate the relationship between left ventricular hypertrophy (LVH) and regional cerebral blood flow (rCBF) in middle-aged patients with essential hypertension.
  • To determine if LVH impacts cerebral blood flow in specific brain regions, independent of blood pressure levels.

Main Methods:

  • Study included 40 never-treated hypertensive patients (aged 50-60 years) without clinical target organ damage.
  • Echocardiography was used to identify left ventricular hypertrophy (LVH).
  • Regional cerebral blood flow (rCBF) was measured using single photon emission computed tomography (SPECT).

Main Results:

  • Twenty-nine patients had echocardiographic criteria for LVH; 11 did not.
  • No significant differences in rCBF were observed across most brain areas between hypertensive patients with or without LVH.
  • A significantly reduced rCBF ratio was found in the striatum area of hypertensive patients with LVH compared to those without (91.5+/-7.4 vs 98.1+/-8.3; P=.023), even after blood pressure adjustment.

Conclusions:

  • The presence of left ventricular hypertrophy (LVH) in middle-aged essential hypertensive patients is associated with reduced regional cerebral blood flow in the striatum.
  • This finding suggests a potential mechanism linking LVH to cerebrovascular events through impaired striatal perfusion.

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