[Quantitative study of therapeutic efficacy on early intervention of hyperbaric oxygen to model of steroid-induced avascular osteonecrosis of femoral head by multi-slice perfusion imaging].

Objective: To quantitatively evaluate the hemodynamic status in animal models of steroid-induced avascular osteonecrosis of femoral head (SANFH) by multislice CT (MSCT) perfusion imaging, and estimate the therapeutic efficacy on early intervention of hyperbaric oxygen (HBO) to improve the region blood flow (rBF) of ischemic femoral head.

Methods: Forty-eight New Zealand male rabbits were injected with Escherichia coli endotoxin and methyl-prednisolone to establish SANFH models and then divided into 3 subgroups to undergo MSCT to measure the rBF, regional blood volume (rBV), and mean transit time (MTT) to obtain perfusion maps at the femoral head epiphysis, metaphysic, and neck of femur, and then were killed to undergo histological examination of the bilateral femoral heads 2, 4, and 6 weeks later respectively (Groups M(2), M(4), and M(6)). Twenty-four rabbits underwent HOB treatment after the second injection of E.

[Prevention and treatment of complications after duodenopancreatectomy].

Objective: To analyze the causes of the complications following duodenopancreatectomy and their prevention and treatment.

Methods: The clinical data of 36 cases receiving duodenopancreatectomy during the last decade were analyzed, including 13 cases of ampullary carcinoma, 8 cases of carcinoma of the pancreas head, 8 cases of distal cholangiocarcinoma, and 7 cases of carcinoma of the duodenal papilla.

Results: Complications occurred in 6 cases after duodenopancreatectomy including pancreatic fistula in 3 cases, bile duct fistula in 1 case, abdominal cavity hemorrhage in 1 case, and alimentary tract hemorrhage in 1 case, with an incidence rate of postoperative complications of 16.