Question 1

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 2

what is cardiac output influenced by?

Accepted Answer

Disease & more: 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 3

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 4

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 5

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 6

what are ?influences that can alter cardiac output?

Accepted Answer

Many: High cardiac out put can be from sepsis, thyroid disease, arterial-venous fistulas, anemia, vitamin defiency etc. Low out put can be from a heart attack and a weak heart muscle, virus induced cardiomyopathy, severe valvular heart disease. Just to name a few.

Question 7

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 8

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 9

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 10

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.

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