Physiology Exam 4

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azbenchaar
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48353
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Physiology Exam 4
Updated:
2010-11-09 21:54:38
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Physiology Exam
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Physiology Exam 4
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  1. Stroke Volume
    The stroke volume is the volume of blood ejected during a single cardiac contraction.

    SV = EDV - ESV
  2. Cardiac Output
    The cardiac output is the blood flow per unit time (L/min).

    CO = SV * HR


    (Cardiac index = CO/BSA)
  3. Stroke Work
    Stroke work is the amount of work the heart does during a single contraction.

    SW = VPP * SV


    (whereas the RV and LV SV & CO are equal, their SW is different because of differences in pressure)
  4. The Fick Principle (measurement of cardiac performance)
    Basis:

    Flow = Quantity consumed/(Arterial content - Venous content)

    Thus:

    Cardiac Output = O2 Consumption/(ao2 - vo2)

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