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Updated: June 17, 2025
If the condition of the children is not materially improved, and if the symptoms, both of the physical defect and of the nervous disturbance, are not cut short, we may predict that in adult age their lives will be made miserable by a variety of abdominal symptoms dependent both on the vasomotor disturbance and upon the accompanying neurosis.
After the cessation of the flow, over 8% of women suffer from "flashes"; this symptom is caused by irritation of the heart and vasomotor centers. The blood-vessels of the head and neck seem to be most affected, yet the skin of the whole body shares in the disturbance. Besides the vasomotor and heat center being disturbed, the sweat center is irritated.
The idea behind this supposition has been that, as the day draws to an end, the circulatory mechanism becomes fatigued, the vasomotor center exhausted, the tone of the blood vessels deficient, and the energy of the heart diminished, and the circulation to the cerebral arteries lessened. The ordinary pressure of the blood in the arteries of young and healthy men averages 110-120 mm. of mercury.
It awakens nervous stimuli and nervous transmissions to normal in all sluggish nerve functions. If for these reasons the heart acts more perfectly, and the nutrition of the heart muscle improves, it acts as a cardiac tonic. Many times, by improving the action of the heart, and also by the action of the drug on the vasomotor center, the pressure in the peripheral circulation may be increased.
After a few questions he said he would have to make a thorough physical examination. "No clothes off!" I protested. "It's essential," he said, and went on with something about the radio-activity of the brain, and the vasomotor centers. The word motor made me feel like a sick automobile.
Your vasomotor system is excited. Your arterioles have contracted. Let me entreat you to compose yourself. I think I hear the carriage. I fancy that you may have a visitor this morning, Ada. You will excuse me now."
Green, "one remotest corner or little inlet of the minute blood-vessels of the human body that does not feel some wavelet from the convulsions occasioned by a good hearty laugh." In medical terms, it stimulates the vasomotor centers, and the spasmodic contraction of the blood-vessels causes the blood to flow quickly.
It seems most likely that the albuminuria is due to defective tone in the vasomotor musculature, comparable in every way to the defective tone in the muscles of the skeleton. We have often further evidence of vasomotor weakness. Fainting attacks are so common as to be the rule rather than the exception.
Caffein is a stimulant and tonic to the heart, increasing its rapidity and the strength of the contractions. It is also a cerebral stimulant, one of the most active that we possess among the drugs. It increases the blood pressure, principally by stimulating the vasomotor center and by increasing the heart strength.
The treatment of shock will probably always be unsatisfactory as the cause is so varied, and, although circulatory prostration and vasomotor paresis always constitute the acute condition, the physiologic health of the heart and blood vessels is so varied.
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