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Monday, 21 October 2013

What is the relationship between blood pressure, stroke level, and cardiac output?



What is the relationship between blood pressure, stroke level, and cardiac output?

Resistance blood experiences when traveling through blood vessels. I am going to tear this into two categories for the moment: 

1. Cardiac output



2. Blood pressure.



 If heart rate or stroke volume were to increase, or decrease, the cardiac output would also increase or decrease.

 If cardiac output increased, there is a resultant increase in the amount of blood being ejected from the heart which would cause an increase in Blood pressure (BP). If cardiac output falls, so does the BP. Total peripheral resistance can be affected by vasoconstriction, vasodilatation, and plaque buildup in the blood vessels. When vasoconstriction occurs, BP increases due to increased friction and force exerted on the arterial walls. When vasodilatation occurs, the arteries widen, and the BP decreases. And as you probably could have guessed, the plaque buildup also increases the friction in arteries causing BP to increase.

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