hyperdynamic

adjective
hy·per·dy·nam·ic | \ -dī-ˈnam-ik \

Medical Definition of hyperdynamic 

: marked by abnormally increased muscular activity especially when of organic origin myocardial infarction, with the remaining left ventricular walls being normal to hyperdynamic —R. A. Nishimura et al

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occurring twice a year or every two years

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