CARDIOHEMODYNAMIC CHANGES IN FOCAL CEREBRAL ISCHEMIA
R.R. Sharipov, N.A. Dorofeyeva, V.F. Sagach
O.O.Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
DOI: https://doi.org/10.15407/fz64.01.011
Abstract
To investigate the effect of focal cerebral ischemia on cardiac
function, we conducted studies on the rats model of focal
cerebral ischemia, isolated occlusion – MCAO. The functional
cardiohemodynamic indicators registered using the
ultra-miniature catheter 2F (“Millar Instruments”, USA) and
Pressure-Volume System. In experiments in vivo, we have
been shown that pumping function parameters were decreased:
stroke volume and cardiac output decreased by more than 50%
during cerebral ischemia. We found diastolic dysfunction of
the left ventricle, as evidenced by an increase in 3 times the end-diastolic pressure, a decrease dP/dt min, an increase in 3.8
times the end-diastolic myocardial stiffness. Thus, the focal
cerebral ischemia accompanied by diastolic dysfunction and
violations of pumping and contractile functions of the heart.
Key words: фокальная ишемия головного мозга; церебро-
кардиальный синдром; кардиогемодинамика.
Keywords:
focal ischemia of the brain; cerebrokardial syndrome; cardioghemmodynamics.
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