MedPage
Today (6/5, Baron-Faust) reports, "Heredity appears to play a
substantial role in pre-hypertension -- a risk factor for high blood pressure,
cardiovascular disease, and death -- according to a large cross-sectional study
of identical and nonidentical twins and their siblings and family members."
Researchers "found that trait heritability affected systolic pressures by about
44.6% (P≤0.001) but not diastolic pressures, while impacting plasma
norepinephrine by around 65.2% (P≤0.001), and heart rate by approximately 62.2%
(P≤0.001)." The investigators "also found trait heritability for other
hemodynamic factors, such as cardiac index of around 60.5%, and 57.3%, for
systemic vascular resistance index (P≤0.001 for both), with lesser associations
for other factors, such as left ventricular pressure changes over time, they
reported in the June issue of the Journal of the American College of
Cardiology."
Posted by: Steven Almany M.D.
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