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A member asked:
Male 22 got postural orthostatic tachycardia syndrome. when i stand hr goes to say 100 when i start walking around it goes down a bit? normal?
A doctor has provided 1 answer
Yes: BP drops the heart rate accelerates to compensate. Cardiac out put is a function of stroke volume and heart rate. The blood stays in your feet so that there is a relative decrease in stroke volume and the heart rate goes up (tachy) and tries to maitain perfusion to vital organs such as the brain. If it is successful, you may feel dizzy and then recover and heart rate drops. If not pts faints.
Answered 6/10/2014
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