Question 1

what factors can affect cardiac output?

Accepted Answer

Cardiac output: In strict physiologic terms, cardiac output is determined by something called stroke volume and heart rate. Heart rate is self-explanatory. Stroke volume is the amount of blood that the heart pumps out with each beat. This in turn is dependent on blood pressure, total blood volume, and how strong the heart contracts.

Question 2

what are factors that influence the cardiac output?

Accepted Answer

Cardiac output: In strict physiologic terms, cardiac output is determined by something called stroke volume and heart rate. Heart rate is self-explanatory. Stroke volume is the amount of blood that the heart pumps out with each beat. This in turn is dependent on blood pressure, total blood volume, and how strong the heart contracts.

Question 3

what factors in the body affect the cardiac output?

Accepted Answer

Many factors: Congenital heart disease, vitamin b1 defiency, anemia, thyroid problem, renal disease, liver disease, brain disease, vascular disease, blood disease, atherosclerosis, valve disease - these are the biggest influencers of cardiac output.

Question 4

why doesn't tachycardia always affect cardiac output?

Accepted Answer

Cardiac output: is stroke volume times heart rate. if stroke volume goes down more than heart rate goes up, cardiac output won't increase. stroke volume depends on preload (filling of the heart), afterload (resistance to flow), and contractility (how much the heart pumps for how much it is filled. For instance, if the heart rate goes up but the the heart doesn't have time to fill, output won't increase.

Question 5

what's cardiac output?

Accepted Answer

Heart pump volume: The cardiac output is the volume of blood per minute pumped by the heart.  Cardiac output is equal to heart rate multiplied by stroke volume (the volume of blood ejected with each heartbeat).

Question 6

can you define cardiac output?

Accepted Answer

Cardiac output: Stroke volume times heart rate equals cardiac output. Stroke volume relates to myocardial contractility, vascular resistance, vascular volume, anemia and metabolic state. There are subcomponents to all of these.

Question 7

what influences cardiac output?

Accepted Answer

Multiple things: Cardiac output is the product of heart rate in stroke volume.  Thus, an increase in heart rate results in an increase in cardiac output.  Stroke volume can be affected by changes in preload, afterload, and contractility (strength of contraction).  Preload is "priming the pump".  Afterload is the resistance to ejection during systole (contraction).

Question 8

how is cardiac output calculated?

Accepted Answer

Indirectly: Indirectly, by equating the right cardiac output with the left cardiac output and putting a swan ganz catheter into the pulmonary artery.  Or calculating the difference between the arteriol and venous oxygen content; this is called the fick formula.

Question 9

what is an average cardiac output?

Accepted Answer

5 L per minute: The average cardiac output is somewhere around 5 l per minute.  Cardiac output varies with the size of the patient (larger patients have larger cardiac output). Cardiac output is increased in conditions such as fever, anemia, or pregnancy.

Question 10

is cardiac output the same as ef%?

Accepted Answer

No : Ef is the percentage of blood ejected with each heart beat. &gt;55% is normal. Cardiac output is the amount of blood in ccs or milliliters ejected per minute and is dependent on heart rate and stroke volume (the volume of blood pumped in a single beat) co depends on body size but a typical measurement is in the range of 5 liters per minute.

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What are the factors that affect cardiac output

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What factors can affect cardiac output?

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What are factors that influence the cardiac output?

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What factors in the body affect the cardiac output?

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Why doesn't tachycardia always affect cardiac output?

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What's cardiac output?

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Can you define cardiac output?

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What influences cardiac output?

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How is cardiac output calculated?

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What is an average cardiac output?

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Is cardiac output the same as ef%?

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