The operating room and the patient; a manual of pre- and post-operative treatment . the case of the artery which may contract sufficiently toobliterate its lumen. A constant gentle stream of warm saline HEMORRHAGE 269 solution by keeping the vessels from the air will materially aidin bringing about relaxation. The pulse wave may be palpatedin the vein. It is best to introduce the blood very slowly. Ifallowed to pass too rapidly in cases in which the recipients cardiacmuscle is weak symptoms of acute cardiac dilatation may symptoms which occasionally occur and whichcall for te
The operating room and the patient; a manual of pre- and post-operative treatment . the case of the artery which may contract sufficiently toobliterate its lumen. A constant gentle stream of warm saline HEMORRHAGE 269 solution by keeping the vessels from the air will materially aidin bringing about relaxation. The pulse wave may be palpatedin the vein. It is best to introduce the blood very slowly. Ifallowed to pass too rapidly in cases in which the recipients cardiacmuscle is weak symptoms of acute cardiac dilatation may symptoms which occasionally occur and whichcall for temporary cessation of the transfusion with the Crileclamp are cardiac distress, uneasiness, coughing, rapid pulseand cyanosis. These symptoms pass off after a time. Thetransition in the recipient is striking. In shock and hemorrhagethere is a gradual alteration of the pale haggard facies and asubstitution of pink coloration. In the donor after from twentyto forty-five minutes of continuous flow from the radial artery agradual pallor of the face and ears may be noted, and serious. Fig. 161.—Brewers tubes. effects will be observed if the transfusion is allowed to go transfusion should be terminated as soon as the donor showsirregular respiration, or sighs, or becomes uneasy, or presentsany of the evidences of the loss of blood. The earliest and mostconstant change noted in the recipient is the almost instant andcontinuous rise in blood pressure continued up to a certainpoint the total rise depending upon the physical state and thequantity of blood transfused. There is also a rise in the hemo-globin and the red blood count. The most constant phenomenonon the part of the donor is increased leucocytosis. Brewers Method.—Brewer employs glass tubes two and one- 270 OPERATING ROOM AXD THE PATIENT half inches long of various shapes (Fig. 161) someT\-hat bulbousat the ends, smaller at the artery end and larger at the vein is a depression near each end in which the lig
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