How much is the normal blood pressure of infants within 1 year old?

Children under 1 year old, systolic blood pressure should be 82mmHg, diastolic blood pressure should be 34.7 mmHg. Infants age, blood pressure standards are different, that is, the standard is changing, with the increase of age, blood pressure standards will also rise, this point and adults blood pressure standards are not the same. Adults, especially over 18 years old, blood pressure standards are fixed, will not change. And infants, blood pressure and age related. The standard for calculation is systolic blood pressure equal to the child's age multiplied by 2 plus 80, diastolic blood pressure is about two-thirds of systolic blood pressure. It should be noted that in infants, the cuff width of the sphygmomanometer measuring blood pressure is also different, usually half to two-thirds of the length of the child's upper arm, neither too wide nor too narrow.