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The arterial tension corresponds to the pressure of blood in the arteries. Inescapable stage of all consultation, the measure of tension remains nevertheless mysterious. To what do the two numbers correspond announced? When can one speak of hypertension? How does a tensiomètre function? Doctissimo sums up all these topics that result you from heart. In the organism, the arteries play the role of nutrient mothers. They drive the blood of the heart toward the different cloths of the organism and provide to the cells the indispensable oxygen thus to their survival. To every contraction of the heart, blood is hunted with strength of the cardiac cavities and propelled in these ducts. To fill their function in a satisfactory manner, they must remain flexible and non obstructed (free of greasy deposits). ..Diastolic and systolicThe arrival of this blood wave exercises a pressure on the partitions of the artery, as water would make it arriving in a garden hose. This pressure bound to the contraction of the heart, or systole, corresponds to the measured most elevated number when one takes tension. It is the systolic arterial pressure. 
After the systole a phase of relaxation occurs, or diastole, during which the heart slackens and fills itself. The pressure exercised by blood on the arterial partitions is then lower. She corresponds to the weakest number, or diastolic arterial pressure. ..The art of the armband These are these pressures that one studies when one takes tension. Become the inescapable instrument of all consultation, the tensiométre is composed of an armband provided with an inflatable muff, bound to a manometer that permits to measure the pressure. Placed around the arm and swollen, the armband interrupts the passage of blood in the artery of the arm (the artery humérale). The physician puts his stethoscope then on the artery, downstream the armband, that he deflates progressively. .When the pressure of the armband is superior to the systolic arterial pressure, blood doesn't flow out and no sound is audible. When the pressure of the armband decreases, blood begins to pass in the artery and makes vibrate the partitions, compressed by the device. Every cardiac beating entails a regular noise, synchronous of the pulse, thus.
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