One of the remarkable conditions associated with the blood vascular system is, that with all the radiations of the capillary system, we have so little disturbance in the blocking of these minute channels. It is true that without some external influence acting on the coats of the vessel, or some modification of the blood, or walls of the vessels through and by which the fibrin factors are disturbed in their normal relations, we could not readily ascribe a cause for the accumulation of any substance which would block or disturb the activity of the circulation. We do, however, have modifications of the blood, as in albuminuria, which appears to permit such abnormal changes to exist, so that the fibrin forming factors take on an abnormal state, with the consequence of the formation of a greater or less amount of fibrin, resulting in a clot. The size of this clot, of
FELL GE. EMBOLISM OF A BRANCH OF THE PULMONARY ARTERY. PATIENT SUSTAINED BY OXYGEN GAS. RECOVERY. Read in the Section of Obstetrics and Diseases of Women, at the Forty-second Annual Meeting of the American Medical Association, held at Washington D.C., May, 1891. JAMA. 1891;XVII(3):90–93. doi:10.1001/jama.1891.02410810006001a
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