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  2. Shunt equation - Wikipedia

    en.wikipedia.org/wiki/Shunt_equation

    The following equation, provides the ratio of the pulmonary blood flow divided by the systemic blood flow and relates to any type of shunt (intracardiac or extracardiac) using variables that can be easily attained in a cardiac catheterization laboratory. Note that the abbreviations are different from the aforementioned equation to reflect the ...

  3. Cardiac output - Wikipedia

    en.wikipedia.org/wiki/Cardiac_output

    Major factors influencing cardiac output – heart rate and stroke volume, both of which are variable. [1]In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols , ˙, or ˙, [2] is the volumetric flow rate of the heart's pumping output: that is, the volume of blood being pumped by a single ventricle of the heart, per unit time (usually measured ...

  4. Aortic valve area calculation - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_area_calculation

    With a heart rate of 80 beats/minute and a systolic ejection period of 0.33 seconds, the cardiac output was 5 liters/minute. During simultaneous measurement of pressures in the left ventricle and aorta (with the use of one catheter in the left ventricle and a second in the ascending aorta), the mean systolic pressure gradient was measured at 50 ...

  5. Cardiac index - Wikipedia

    en.wikipedia.org/wiki/Cardiac_index

    Cardiac index is a critical parameter in evaluating cardiac performance and the adequacy of tissue perfusion. In healthy adults, the normal range of cardiac index is generally between 2.6 to 4.2 L/min/m². Values below this range may indicate hypoperfusion and are often seen in conditions such as heart failure, hypovolemia, and cardiogenic shock.

  6. Fick principle - Wikipedia

    en.wikipedia.org/wiki/Fick_principle

    In the determination of cardiac output, the substance most commonly measured is the oxygen content of blood thus giving the arteriovenous oxygen difference, and the flow calculated is the flow across the pulmonary system. This gives a simple way to calculate the cardiac output: [citation needed]

  7. 3 steps to calculate your debt-to-income ratio - AOL

    www.aol.com/finance/3-steps-calculate-debt...

    To calculate your debt-to-income ratio, add up your monthly debt payments and your gross monthly income and then divide your debt by your gross income. ... your total DTI would be 0.40, or 40 ...

  8. Velocity time integral - Wikipedia

    en.wikipedia.org/wiki/Velocity_time_integral

    Velocity Time Integral is a clinical Doppler ultrasound measurement of blood flow, equivalent to the area under the velocity time curve. The product of VTI (cm/stroke) and the cross sectional area of a valve (cm2) yields a stroke volume (cm3/stroke), which can be used to calculate cardiac output.

  9. Current ratio: What it is and how to calculate it - AOL

    www.aol.com/finance/current-ratio-calculate...

    You’ll find the current ratio with other liquidity ratios. General Electric’s (GE) current assets in December 2021 were $65.5 billion; its current liabilities were $51.95 billion, making its ...

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