. The Principles and practice of gynecology : for students and practitioners. m contact with the drain, are unfortu-nately liable to infection, adhesions, perforation, and hernia. More-over, the long sinus left after removal of the drain is often slow to heal,and its outer end is prone to contract rapidly and leave in the pelvisa troublesome, undrained or imperfectly drained pocket. For thesereasons the abdominal route is objectionable. Siiould it be necessary to drain through the abdominal wound, asmall glass tube may be used. It should be long enough tothe bottom of the pelvis, and
. The Principles and practice of gynecology : for students and practitioners. m contact with the drain, are unfortu-nately liable to infection, adhesions, perforation, and hernia. More-over, the long sinus left after removal of the drain is often slow to heal,and its outer end is prone to contract rapidly and leave in the pelvisa troublesome, undrained or imperfectly drained pocket. For thesereasons the abdominal route is objectionable. Siiould it be necessary to drain through the abdominal wound, asmall glass tube may be used. It should be long enough tothe bottom of the pelvis, and should be kept from slipping into the 142 GENERAL PRINCIPLES. abdominal cavity by a flange at the outer end. This form of drainagemay be useful in operations for peritonitis and for the removal ofserous effusions. The wound is dressed by packing gauze over it andaround the protruding portion of the tube. A perforated thin sheetof rubber dam may be snapped over the flange and a mass of absorbentcotton is placed over the end of the tube and enveloped in the rubber Figure Capillary drainage throusrh abdominal wound; the gauze pad held by the hand is to beplaced over the wound in contact with the protruding portion of the drain. This pad shouldbe secured by an abdominal binder, and changed often enough to keep it dry. dam. The cotton absorbs all the drainage-fluid, and should be re-newed often enough to keep it dry. Keep the dressings dry is acaution which a ivatchful surgeon will have occasion to repeat again andagain to his assistants and nurses. The rubber dam confines thedrainage-field to the cotton and thereby protects the dressings properfrom moisture. The time for the removal of a drain is M-hen it ceasesto drain or when little fluid comes through it. The first fluid, usuallyp- dark bloody serum^ becomes lighter in color fts it diminishes iij DRATNAGE IN MAJOR OPKRATIOXS. 113 quantity. Parts of the onientiuu KoinetinuS work tlicir way into thesmall holes at the end of t
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