A manual of modern surgery : an exposition of the accepted doctrines and approved operative procedures of the present time, for the use of students and practitioners . ce of the heart is suf-ficient to drive enough bloodthrough the contracted ves-sel to wash away the intra-and extra-vascular clots. Asthe continuing hemorrhageincreases the coagulabilityof the blood and weakens the cardiac power, perhaps to syncope, the time arrives when thesetemporary expedients of Nature stop the flow. Cardiac strength thenreturns and may, by the increased intravascular pressure, cause recur-rence of the bleed
A manual of modern surgery : an exposition of the accepted doctrines and approved operative procedures of the present time, for the use of students and practitioners . ce of the heart is suf-ficient to drive enough bloodthrough the contracted ves-sel to wash away the intra-and extra-vascular clots. Asthe continuing hemorrhageincreases the coagulabilityof the blood and weakens the cardiac power, perhaps to syncope, the time arrives when thesetemporary expedients of Nature stop the flow. Cardiac strength thenreturns and may, by the increased intravascular pressure, cause recur-rence of the bleeding. In many instances, however, the temporarymeans are effective until permanent changes can be brought about torepair the vascular traumatism. Permanent Means.—When a temporary check has been given tothe flow of blood, a coagulum gradually forms within the artery. Thisis conical in shape, with its base situated and fixed at the opening,while its apex, lying loose in the lumen of the artery, extends as highas the first branch. The base of this internal clot corresponds in sizewith the interior of the vessel, which it fits like a cork. Fig. 94. CLOT IN SHEATH. ?:v OUTSIDE,;- OF- SHEATH CONTRACTED AND RETRACTEDARTERY Diagram of Natures temporary method of arrestinghemorrhage.
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