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Updated: July 9, 2025
Hemorrhage has been attributed in many instances to the senile rigidity and friability of the uterine vessels, which are not in a condition to offer sufficient resistance to the blood-pressure which is brought to bear on their walls; there is also softening and relaxation of the uterine tissue.
If he knew, he must have been a splendid actor, one of those whom only the minute blood-pressure test of the sphygmograph could induce to give up a secret, and then only in spite of himself. "It is wonderful," I agreed. "Are you ready?" We left the apartment and walked along in the bracing morning air toward the campus and the Chemistry Building.
Unfortunately, a small and precise doctor decided that there was something the matter with Anthony's blood-pressure. He could not conscientiously pass him for an officers' training-camp. Their third anniversary passed, uncelebrated, unnoticed. The season warmed in thaw, melted into hotter summer, simmered and boiled away.
Bearing especially on this point is the fact that if adrenalin in sufficient quantities be administered simultaneously with an acid, it will not only prevent the fall in blood-pressure usually caused by the acid, but will also prevent the histologic changes in the brain, adrenals, and liver which are usually caused by the intravenous injection of acids.
During this heavy strain he became increasingly nervous and by imperceptible degrees there developed a pulsating enlargement of the thyroid gland, an increased prominence of the eyes, marked increase in perspiration profuse sweating even palpitation of the heart, increased respiration with frequent sighing, increase in blood-pressure; there were tremor of many muscles, rapid loss of weight and strength, frequent gastro-intestinal disturbances, loss of normal control of his emotions, and marked impairment of his mental faculties.
The increased action of the muscles of the heart and the blood-vessels increases the efficiency of the circulation; the secretion of the adrenal gland causes a rise in the blood-pressure; the increased action of the thyroid gland causes an increased metabolic activity; there is evidence that glycogen is actively called out, this being the most immediately available substance for the production of energy; the increased activity of the respiration is needed to supply the greater need of oxygen and the elimination of the increased amount of waste products; the dilatation of the nostrils affords a freer intake of air; the increased activity of the sweat-glands is needed to regulate the temperature of the body which the increased metabolism causes to rise.
Whether or not the consequent functional depression and the morphologic alterations seen in the brain-cells may be due to the low blood-pressure which follows excessive trauma is shown by the following experiments: The circulation of animals was first rendered STATIC by over-transfusion, and was controlled by a continuous blood-pressure record on a drum, the factor of anemia being thereby wholly excluded during the application of the trauma and during the removal of a specimen of brain tissue for histologic study.
Pop hates it as much as me, but he's scared to kick. Mother says vegetables contain all the proteins you want. Mother says, if you eat meat, your blood-pressure goes all blooey. Do you think it does?" "Mine seems pretty well in the pink." "She's great on talking," conceded the boy. "She's out to-night somewhere, giving a lecture on Rational Eating to some ginks.
The increased output of adrenalin activates the brain to still greater activity, as a result of which again the entire sympathetic nervous system is further activated, as is manifested by increased heart action, more rapid respiration, raised blood-pressure, increased output of glycogen, increased power of the muscles to metabolize glucose, etc.
It revived and reproduced rapidly. I injected .5 cc under my skin and in less than one hour my temperature was 30.8°C. An hour later it was 30.9°C. This was its peak. It immediately returned to normal. The only other observable symptom was slightly increased thirst. Blood-pressure and pulse remained normal.
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