Normal Blood Pressure For Adults

Categories: Uncategorized
Sources: Disturbances Of The Heart

Woley [Footnote: Woley, II. P.: The Normal Variation of the Systolic

Blood Pressure, THE JOURNAL A. M. A., July 9, 1910, p. 121.] after

studying, the blood pressure in a thousand persons, found that the

systolic average for males at all ages was 127.5 mm., while that for

females at all ages was 120 mm. He found the average in persons from

15 to 30 years to be 122 systolic; from 30 to 40, 127 mm., and from

the ages of 40 to 50, to be 130 mm.

Lee [Footnote: Lee: Boston Med. and Surg. Jour., Oct. 7, 1915.]

examined 662 young men at the average age of 18, and found that the

average systolic blood pressure was 120 mm., and the average

diastolic 80 mm. Eighty-five of these young men, however, had a

systolic pressure of over 140. It is not unusual to find that a

young man who is very athletic has an abnormally high systolic


Barach and Marks [Footnote: Barach, J. H., and Marks, W. L.: Blood

Pressures: Their Relation to Each Other and to Physical Efficiency,

Arch. Int. Med., April, 1914, p 648.] in a series of 656 healthy

young men, found that the systolic pressure was above 150 in only 10

percent, and that in 338 cases the diastolic pressure, read at the

fifth phase, did not exceed 100 mm. in 96 percent

Nicholson [Footnote: Nicholson: Am. Jour. Med. Sc., April, 1914, p.

514.] believes that with a low systolic pressure and a large

pressure pulse there is probably a strong heart and dilated blood

vessels, while with a low systolic pressure and a small pressure

pulse the heart itself is weak, with also, perhaps, dilated blood

vessels. If there is a high systolic pressure and a correspondingly

high diastolic pressure, the balance between the vessels and the

heart is compensated as long as the heart muscle is sufficient. He

believes the velocity of the blood in the blood stream may be

roughly estimated as being equal to the pressure pulse multiplied by

the pulse rate.

Faber 44 [Footnote: Faber: Ugeskrifta f. Laeger, June 10, 1915.]

examined 211 obese patients, and in 182 of these there was no kidney

or vascular disturbance. In 52 percent of these 211 persons the

systolic pressure was under 140, while in the remaining 48 percent

it ranged from 145 to 200 mm.