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Updated: May 10, 2025
As there is always more or less paresis and dilatation of the large veins of the splanchnic system, a tight bandage about the abdomen is of great advantage in raising the blood pressure to the safety mark. Strophanthin, given intravenously, is valuable as a quick restorative of the heart. Digitalis is so slow that it is of little value in an emergency. The camphor may be repeated frequently.
When the splanchnic vessels are dilated there is also a lack of proper tone to the cerebral vessels, and this may be a cause of mental weariness and neurasthenia.
He quotes several authorities as showing that during muscle work the carbon dioxid of the blood is increased in amount, which, stimulating the nervous centers controlling the suprarenal glands, increases the epinephrin content of the blood. The consequence is contraction of the splanchnic blood vessels, with a rise in general blood pressure.
The splanchnic area can be acted on so as to raise the blood pressure without influencing the emotions. We know also that when it is raised in melancholia the increased pressure is associated with the reverse of pleasurable emotion.
While ptosis of organs in the abdomen and a flaccid condition of the musculature of the abdomen are frequent causes of this splanchlnic stasis, and therefore hypotension, especially in women, it is quite possible that suprarenal insufficiency will allow this condition of the splanchnic vessels to occur frequently.
The pneumogastric nerve, for example, if stimulated, arrests the movements of the heart: the splanchnic nerve arrests those of the intestines, if already begun.
The test was negative after trauma under anesthesia, and after intravenous injections of thyroid extract, of thyroglobin, and of the juices of various organs injected into the same animal from which the organs were taken. Placental extract gave a positive test. The test was sometimes positive after electric stimulation of the splanchnic nerves.
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