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MYOCARDIAL PERFORMANCE A fterload

MYOCARDIAL PERFORMANCE A fterload. S ummation of all forces opposing ventricular fiber shortening during ejection: Ventricular shape and size Wall thickness I ntracavitary pressure Aortic impedance (resistance) Ventricular resistance (inertia). Law of Laplace. stress = Pr / h.

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MYOCARDIAL PERFORMANCE A fterload

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  1. MYOCARDIAL PERFORMANCEAfterload Summation of all forces opposing ventricular fiber shortening during ejection: • Ventricular shape and size • Wall thickness • Intracavitary pressure • Aortic impedance (resistance) • Ventricular resistance (inertia) Law of Laplace stress = Pr / h SVR = MAP – CVP/CO phenylephrine norepinephrine SVR Wall stress ~

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