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Although the hospital afforded no X-ray to discern the location of the fatal arterial lesion through which his life was secretly spurting away, the post mortem revealed the fact that the Bolshevik rifle bullet had severed a tiny artery in his lung. Care-worn American medical men wept in despair.
And here, then, takes place, between the air and the blood, that mysterious intercourse for the account of which I have kept you waiting so long; and at the end of which the black blood becomes red, or, in other words, from venous becomes arterial. I have called it "intercourse," and this is really the proper phrase; for this transformation of the blood is accomplished by means of an exchange.
It is generally supposed that the uterus in the adult animal is not supplied with much arterial blood, merely sufficient to nourish that viscus.
From the terminations of the placental vessels not being observed to bleed after being torn from the uterus, while those of the uterus effuse a great quantity of florid arterial blood, the terminations of the placental vessels would seem to be inserted into the arterial ones of the mother; and to receive oxygenation from the passing currents of her blood through their coats or membranes; which oxygenation is proved by the change of the colour of the blood from dark to light red in its passage from the placental arteries to the placental vein.
Precisely the same process is going on continuously and unobtrusively within the human body under normal bodily conditions of temperature and pressure, when the oxy-haemoglobin of the arterial blood changes over into the haemoglobin of the venous blood.
The pulse, however, will always show the quickly lost arterial pressure of every beat on account of the aorta losing its pressure through the regurgitant flow of blood. Sooner or later, from the impaired aortic tension causing a diminished or imperfect flow of blood through the coronary arteries, impaired nutrition of the heart muscle occurs.
And after the injection he had been able to follow in spite of his suffering the gradual reviving of the organ as the stimulus set it beating again, removing the black venous blood, and sending life into it anew, with the red arterial blood. But the attack would return as soon as the mechanical effect of the injection should cease. He could predict it almost within a few minutes.
Agnes Eve' without the book; because, given the circumstances, such as Fanny Brand, who is the key of the enigma, and approximately represents the latitude and longitude of Fanny Brawne; allowing also for the bright red colour of the arterial blood upon the handkerchief, which was just what you were puzzling over in the shop just now; and counting the effect of the professional environment, here almost perfectly duplicated the result is logical and inevitable.
In the next place, the consistency of the coats of which the arterial vein and the great artery are composed, sufficiently shows that the blood is impelled against them with more force than against the veins.
The credit of first using high frequency currents in the treatment of glaucoma belongs to Truc, Imbert and Marques, and Roure's experiments indicate that this current suitably applied appears to have an influence not only in reducing the arterial tension, but also the ocular tension.
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