1. A skin lesion was made in rats by dorsal incision and the insertion of a polythene tube. 2. Over a period of 25 days after wounding, assays were performed for ascorbic acid, DNA, hydroxyproline, methionine, tryptophan, tyrosine and free amino acids in the lesion tissue. 3. The neutral-salt-soluble proteins of the lesion tissue were fractionated on DEAE-Sephadex, with the separation of fibrinogen and gamma-globulin from a serum protein fraction. 4. Over a period of 20 days after wounding, in wounded rats and in controls, assays were conducted for: ascorbic acid in lens and liver, hydroxyproline, soluble protein, methionine and water in muscle and tendon, and free amino acids in muscle. 5. Relative to controls there was a decrease in lens and liver ascorbic acid, a rise in tendon hydroxyproline, a rise in muscle free amino acids, a fall in muscle protein and a rise in tendon and muscle water.
Thirty-five patients with blunt hepatic injuries treated in a 7-year period are reviewed. The difficulties of diagnosis are stressed in that only 48.6%c were diagnosed
preoperatively. Associated intra-abdominal and concomitant head, chest, pelvic and skeletal injuries accounted for most of these difficulties. Seventeen of the 35 patients had extensive lacerations or intra-lobar ruptures of the liver. Simple linear or stellate lacerated wounds were treated by drainage, or suture, or debridement of the ragged liver edges and suture. Prior to 1964 extensively lacerated liver wounds were treated by gauze packing. Three (60%c) of five patients thus treated died, while the others had multiple complications. Since 1964, packing has been abandoned in favor of major resection and of 11 patients who underwent such procedures only one died. Hepatic resection for severe blunt injuries has the advantages of removal of all devitalized liver, control of hemorrhage, reduction of postoperative complications such as secondary hemorrhage, intraabdominal and hepatic abscesses and hemobilia. Hepatic resection is recommended for subeapsular hematomas with intra-lobar rupture of the liver to avoid hepatic necrosis. These injuries are diagnosed by injection of methylene blue into the common hepatic duct. Low mortality and morbidity in this series is due to improved care of injured pa-tients, early surgical intervention and adequate removal of devitalized lacerated and injured tissues by debridement or major hepatic resection.