Cardiac output (Q or or CO ) is the volume of blood being pumped by the heart, in particular by a left or right ventricle in the time interval of one minute. CO may be measured in many ways, for example dm3/min (1 dm3 equals 1000 cm3 or 1 litre). Q is furthermore the combined sum of output from the right ventricle and the output from the left ventricle during the phase of systole of the heart. An average resting cardiac output would be 5.6 L/min for a human male and 4.9 L/min for a female.
Q = Stroke Volume × Heart rate
Read more about Cardiac Output: Clinical Uses, Measuring Cardiac Output, Cardiac Output and Vascular Resistance, Cardiac Output and Respiration, Combined Cardiac Output, Cardiac Input, Example Values
Other articles related to "cardiac output, output, cardiac":
... must immediately respond to changes in cardiac output, blood flow, and blood pressure ... Cardiac output is defined as the product of heart rate and stroke volume which represents the volume of blood being pumped by the heart each minute ... Cardiac output increases during physical activity due to an increase in both the heart rate and stroke volume ...
... Guyton is most famous for his experiments in the 1950s which studied the physiology of cardiac output and its relationship with the peripheral circulation (see e.g ... that it was the heart itself that controlled cardiac output ... demonstrated that it was the need of the body tissues for oxygen which was the real regulator of cardiac output ...
... Cardiac output, the amount of blood that leaves the heart in a given time period (i.e ... larger left ventricle, the heart rate can decrease and still maintain a level of cardiac output necessary for the body ... involve the thickening of the left ventricular wall due to increased cardiac output, which leads to physiologic hypertrophy of the heart ...
... The flow across the aortic valve is calculated by taking the cardiac output (measured in liters/minute) and dividing it by the heart rate (to give output per cardiac cycle) and then ... if the cardiac output is low) ... gradient is accomplished by temporarily increasing the cardiac output by the infusion of positive inotropic agents, such as dobutamine Example An ...
55–100 mL ejection fraction (Ef) 58% 55–70% heart rate (HR) 75 bpm 60–100 bpm cardiac output (CO) 5.25 L/minute 4.0–8.0 L/min ...
Famous quotes containing the word output:
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And gave her mother forty whacks;
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She gave her father forty-one.”
—Anonymous. Late 19th century ballad.
The quatrain refers to the famous case of Lizzie Borden, tried for the murder of her father and stepmother on Aug. 4, 1892, in Fall River, Massachusetts. Though she was found innocent, there were many who contested the verdict, occasioning a prodigious output of articles and books, including, most recently, Frank Spiering’s Lizzie (1985)