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Our hearts are peristaltic pumps, which has a periodic compression and expansion. The head developed can be taken as blood pressure.

There are situation when the blood pressure is normal while the pulse rate is high. What is the physical meaning of this?

Does it mean?

  • Low flow rate per contraction?
  • more pressure loss(an indication of blood vessel blockage)?
  • contraction rate of heart muscle is low?
karthikeyan
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1 Answers1

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high pulse rate + low pressure means low pumping efficiency of the heart. this can be caused by:

  • leaking valves, especially the main aortic valve, due to disease or calcification;
  • low blood volume, due to bleedout as in bodily injury or an aneurysm rupture;
  • incomplete contraction of the heart muscle due to a breakage or damage in the nerves which carry the firing impulse around the heart, as in a heart attack;
  • cardiac nerve misfire, as in fibrillation or a fault in the nerve cluster that generates the cardiac trigger signal;
  • dead tissue in the heart muscle, as caused by a heart attack;
  • a perforation between the ventricles, as in a congenital heart defect;
  • breakdown of the elastic component of the heart tissue, causing ballooning of the heart, as in congestive heart failure;
  • severe relaxation of the muscular walls of the arteries in the body.
Wasabi
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niels nielsen
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