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Biomedical subjects

Takeshi Okuda

Publications and source records attributed to Takeshi Okuda.

23 records · Page 2Linked to original sources

[An economic evaluation on the clinical pathway for gastrectomy].

OBJECTIVE: To analyze the costs of gastrectomy patients treated with the clinical pathway. PATIENTS AND METHODS: Seventy-six patients (path group 44, control 32) had undergone gastrectomy in our hospital in 2001. The clinical pathway included the same care map. Treatment costs were estimated from medical cost receipt data. The economical analysis was performed from the point of the direct cost payer's view. RESULTS: The length of hospital stay in the path group was 27.1 +/- 5.9 days and decreased 8.3 days in comparison with the control(p < 0.001). The cost of the path group was 145.290 +/- 23.773 points and 19.278 points less than the control(p < 0.005). In the path group the operation case per bed was increased 30% and the cost per bed was also increased 15% more than the control. CONCLUSIONS: The implementation of the clinical pathway decreased the length and the cost of hospital stay. The clinical pathway is effective to use the hospital resources, such as bed.

Costs and Cost Analysis↗

[Surgical treatment of gastric remnant-stump cancer].

The aim of this study was to evaluate the characteristics, and treatment of gastric remnant cancer based on an analysis of the surgical results of Nippon Medical School over the past 18 years. Thirty seven patients (27 males and 10 females, mean age 60 years) underwent surgery for gastric remnant cancer. Patients who had undergone gastrectomy with Billroth II anastomosis for benign disorder underwent re-gastrectomy for the cancer of gastric remnant 20 years after the first gastrectomy. While, patients who had undergone gastrectomy with Billroth I anastomosis for malignant disorder underwent re-gastrectomy within 10 years after the first gastrectomy. Early-type gastric remnant cancers were not observed in the suture line or gastric stump region, while advanced-type cancers were observed in the anastomotic region. Surgical treatment was carried out by the method of total gastrectomy with Roux-en-Y esophago-jejunal anastomosis. The 5 year survival rates were 77%for early cancer and 14%for advanced cancer. Periodic follow-up endoscopies in gastrectomized patients may be useful for the early detection of gastric remnant cancer after operations for gastric cancer.

Adult↗

Magnetic resonance imaging of gastrointestinal stromal tumor in the abdomen and pelvis.

This study aimed to evaluate magnetic resonance (MR) imaging appearances of 11 gastrointestinal stromal tumors in the abdomen and pelvis and compared them with some histological findings. Gastrointestinal stromal tumor showed nonhomogeneous signal intensity and included hemorrhage in large tumors. Gastrointestinal stromal tumors showed a wide variety of enhancement, and contrast enhancement of the tumor was consistent with mitosis index as well as the largest diameter of the tumor. Contrast-enhanced MR imaging may be useful in the assessment of tumor activity.

Abdominal Cavity↗

Percutaneous transhepatic insertion of metal stents with a double-pigtail catheter in afferent loop obstruction following distal gastrectomy.

We report successful outcome following transhepatic insertion of metal stents with a double-pigtail catheter in a patient with afferent loop syndrome caused by recurrent gastric carcinoma. A 77-year-old man was admitted with a 2-week history of fever, right upper quadrant pain, and jaundice. His past medical history included distal gastrectomy for treatment of gastric cancer two years previously. Abdominal computed tomography revealed marked dilation of the jejunal limb and intrahepatic bile duct. We diagnosed the patient with afferent loop syndrome resulting from recurrent cancer. Percutaneous transhepatic biliary drainage was performed, and a catheter was placed beyond the papilla of Vater. Approximately 1300 mL of turbid jejunal contents were removed. Symptoms resolved by one day after initiation of drainage. After 1 week, a sheath introducer was inserted beyond the point of stenosis, and two metal stents were placed. A double-pigtail catheter was inserted into the metal stents to prevent migration. Good stent placement was confirmed and the drainage catheter was removed.

Afferent Loop Syndrome↗