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What Influences Cardiac Output
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). ...Read moreSee 1 more doctor 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. ...Read moreSee 1 more doctor answer
In general four: Cardiac output is influence by the amount of blood the heart recieves,the resistance against which the blood is ejected,the strength of contraction and the heart rate. For ex. CO increases with heart rate,increase in blood volume,increase in cardiac contraction and less resistance to ejection because of lower peripheral resistance. Clinical conditions that affects any 4 will alter cardiac output ...Read moreSee 1 more doctor answer
Related but not the : Same. Co is a mathematical calculation of the amount of blood pump by the left ventricle of your heart in one minute ( stroke volume x hr ). The ejection fraction is a measurement of the percentage of blood leaving your left ventricle every time contract. Can be measure by 2d echocardiogram, cardiac catheterization, nuclear scan, mri. Hope it help. ...Read moreSee 1 more doctor answer
Exercise: In order to facilitate the increase in oxygen demand of the muscles during exercise, the heart rate and volume of blood per beat will go up. Cardiac output is the product of heart rate times stroke volume. Therefore cardiac output will increase with exercise. ...Read moreSee 1 more doctor answer
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