Diastolic function parameters are improved by the addition of simvastatin to enalapril-based treatment in hypertensive individuals
Atherosclerosis,  Clinical Article

Beck ALS et al. – The addition of simvastatin to enalapril in hypertensive patients with average cholesterol levels improves parameters of diastolic function independently of changes in blood pressure or cholesterol.

Methods
  • Hypertensive patients with DD and LDL–cholesterol <160mg/dL underwent a run–in phase to achieve a systolic blood pressure (SBP) <135mmHg and diastolic blood pressure (DBP) <85mmHg with enalapril.
  • Hydrochlorothiazide was added when need to achieve blood pressure control.
  • Four weeks after reaching the optimum anti–hypertensive regimen patients were randomized to receive 80mg simvastatin (n=27) or placebo (n=28) for a period of 20 weeks.
  • Echocardiograms were performed before and after treatment with measurement of maximum left atrial volume (LAV), conventional and tissue Doppler velocities in early diastole (E, e’) and late diastole (A, a’).

Results
  • After 20 weeks, the simvastatin group presented reduction in SBP (–4±2mmHg, p=0.02), increase in E/A ratio (1.0±0.05 to 1.2±0.06, p=0.03) and decrease of LAV indexed to body surface area (24.5±0.9 to 21.1±0.8ml/m2, p=0.048), as compared with placebo arm.
  • No change in systolic function and no correlation between the E/A ratio, LAV and changes in blood pressure or lipid profile were observed.

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