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Doctor insights on: Is Fever An Indicator Of An Increase In Cardiac Output

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Is fever an indicator of an increase in cardiac output?

Is fever an indicator of an increase in cardiac output?

Increased pulse: When one has a fever, the body usually responds with vasodilatation (widening of blood vessels) to be nearer the outside of your body and let the heat dissipate. With widening of the vessels the heart must increase the pulse rate to maintain proper blood pressure. There is much more to this and an md can fill you in. ...Read more

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Dr. Cynthia Archer
916 doctors shared insights

Cardiac Output (Definition)

Cardiac output is a measurement of the amount of blood a person's heart can pump out during a set amount of time. The measurements help doctors figure out how strong or weak ...Read more


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How do beta-clockers increase cardiac output?

How do beta-clockers increase cardiac output?

They don't: Beta blockers do not increase cardiac output. If anything, they reduce cardiac output by reducing heart rate and the strength of contraction (contractility). ...Read more

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Can you tell me if cardiac output increases / decreases?

Can you tell me if cardiac output increases / decreases?

Both: In a normal person, cardiac output increase with exertion then returns to a normal or resting level. With a malfunctioning heart, cardiac output is frequently considered low or subnormal. ...Read more

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I'm curious what occurs if cardiac output increases? What if it decreases?

I'm curious what occurs if cardiac output increases? What if it decreases?

Constantly changing: Your cardiac output (which is the product of stroke volume and heart rate, expressed in liters per minute) is constantly changing in response to your metabolic needs. ...Read more

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Will acetylcholine raise cardiac output?

Will acetylcholine raise cardiac output?

No: Acetylcholine neurotransmission has an inhibitory effect on the heart, which lowers heart rate thereby decreasing cardiac output. ...Read more

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Will epinephrine increase cardiac output?

Yes: It makes the heart contract more forcefully and makes it beat faster. Both effects will increase the cardiac output. ...Read more

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How does hypertension increase cardiac output?

How does hypertension increase cardiac output?

It doesn't: Hypertension increases a parameter known as after load (the obstacle the heart is working against). All other things being equal, high blood pressure produces less volume of blood pumped with each heartbeat for any given amount of work by the heart. The heart thus increases how hard it is working with each beat which is one of the ways in which heart damage results from hypertension. ...Read more

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Why is there increased cardiac output in anemia?

Why is there increased cardiac output in anemia?

Contracts harder: The cardiac output is the stroke volume times the heart rate. So the heart has to contract harder and/or faster. Typically, in severe anemia, an echocardiogram would show the heart contractng harder than normal. ...Read more

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Dr. Mark Diamond
2,227 doctors shared insights

Fever (Definition)

Fever is the temporary increase in the body's temperature in response to some disease or illness. A child has a fever when the temperature is at or above one of ...Read more


Dr. Olav Jaren
5 doctors shared insights

Cardiac (Definition)

Cardiac translates literally to "heart, " and any place the term is seen, such ...Read more