Such disease is in hypertension and low blood pressure still is very common in the life, especially a few went up the elder of age people. Although such disease does not meet some moment to bring life risk directly, but the major disease that causes because of the discretion of blood pressure to a lot of friends also be very common very dangerous. So the issue came, are hematic capacity and blood pressure put in this kind to concern after all between medicine?
What blood pressure reacts is the lateral pressure that hematic current uses pair of blood vessel. Of course hematic capacity inadequacy can bring about blood pressure to drop certainly. But blood pressure drops is not hematic capacity inadequacy certainly, return the case that possible heart declines, heart power is insufficient.
The measurement technique of blood pressure includes to measure law and indirect method of measurement directly: ① measures a way directly is the long conduit that has dissolve anti-coagulants, classics skin puncture sends vessel to aorta, conduit and pressure sensor join, show blood pressure directly. This law achieves kind to have, apply to certain and special situation only. ② indirect method of measurement namely sleeve leads pressurization way, measure with tonometer. Tonometer has mercuric pillar, spring and electronic tonometer. Indirect method of measurement is simple easy travel, it is current clinical the method that goes up to apply extensively.
1. measurement technique (sleeve takes pressurization law)
(1) humerus artery and heart are in same standard. Lie on one’s back when smooth armpit central line, the 4th costal region is made the same score when seat.
(2) furls sleeve, show an arm, elbow unbend, the palm up.
(3) opens tonometer, perpendicular put firm, open mercuric chamfer switch.
(4) removes the air inside sleeve belt, at the upper arm mid belt pestering sleeve, lower edge is apart from fossa cubitalis 2 ～ 3cm, point to with can be being inserted for degree of tightness appropriate.
(5) feels humerus to move beating of arteries and veins, beating of park of will stethoscopic head is in apparently, secure with the hand, gently pressurization, involve valve, aerate to move beating of arteries and veins to disappear to humerus again elevatory 20 ～ 30mmHg.
(6) slow deflate, rate falls with mercury 4mmHg/ second is advisable, notice mercury scale and humerus artery audio change.
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