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At least 991 records · Page 55Linked to original sources
PubMed1992

[Correlation between volumetric endosonography and prostate weight. Variation according to histological type].

Correlation between endosonographic volumetry and prostatic weight, accuracy according to histopathology. We report a study over 50 patients who underwent TURP, demonstrating statistical correlation between endosonographic volumetry and prostatic weight. We observe a difference in accuracy according to histopathology and we discuss the reliability of the technique. We conclude that variability is due to the sensitivity of the examination.

Double-Blind Method↗
PubMed1992

A technique for segmental rectal and colonic perfusion in humans.

To enable a better characterization of pathophysiologic processes in colon and rectum, we have developed a perfusion technique for collection of soluble substances and cells from standardized intestinal segments. A tube with balloons attached to its outer wall was endoscopically introduced into the rectum and sigmoid colon, and its position ascertained fluoroscopically. The balloons delimited two segments, one in the sigmoid colon and one in the rectum. The segments were simultaneously perfused by a buffer at 37 degrees C. After a 30-min rinsing period, perfusate and cells were collected at 20-min intervals. Of 51 attempted perfusions, 45 were successfully completed. Recovered volumes equaled those infused. Leakage from the proximal intestine to the segments was negligible. In 18 healthy volunteers, the mean perfusate concentration from the rectal segment was 57.5 (27.5-120.2) mg/L for albumin, 1.3 (1.0-1.7) micrograms/L for eosinophil cationic protein, 5.1 (2.8-9.5) ng/L for prostaglandin E2, and 61.7 (41.7-89.1) micrograms/L for hyaluronan, and all values were lower in the sigmoid segment. Steady state conditions were achieved from the second perfusion period. The perfusate contained 4-80 x 10(4) cells, more than 95% of which were epithelial cells. The technique is safe, has a good subject compliance, and seems to be a valuable tool in investigations on quantitative release of soluble substances and cells in, e.g., colorectal inflammation.

Adult↗
PubMed1964

SEVERE COLONIC BLEEDING.

Patients requiring emergency operation for severe acute colonic hemorrhage usually arrive in the operating room inadequately studied and the point of bleeding not known. A well planned procedure for making an operative diagnosis is lacking. The fact that diverticular disease is the most common cause of massive colonic bleeding, dominates the surgical management of this problem. A critical interpretation of the color and the consistency of the stools must be made by the surgeon. Since the bleeding lesion is usually otherwise clinically silent, the character of the stools may be the only indication of the level of bleeding and the rate and the amount of the blood loss. A proctoscopic examination, followed by an emergency barium enema study if possible, is always done before subjecting a patient to laparotomy. The indications for emergency operation include acute exsanguinating hemorrhage, less severe but persistent colonic bleeding and recurrent colonic bleeding. The steps for the operative diagnosis and the surgical procedure utilized for a specific situation are discussed.

Colonic Diseases↗
PubMed1992

[Symptomatic stenoses following stapler anastomosis of the large intestine].

Since 1978 the stapled colonic anastomosis belongs to the technical standard in surgery of the rectosigmoid. It is followed by an extension of indications for sphincter-preserving excisional treatment. The main advantages of the mechanical suturing are the shortening of operation time as well as the practical and easy management, especially when the anastomosis is located low in the pelvis. Early respectively late postoperative strictures represent the most frequent complications of stapled anastomosis. From 1989 to 1991, the stapling technique was used for colorectal anastomosis in 196 cases in our hospital. Clinical stenosis occurred in 5 cases, an incidence of 2.5%. Causative the size of the cartridge, the healing by second intention because of the metallic staples, a disturbed microcirculation depending on the tension around the anastomosis, missing normal fecal dilation because of protective colostomy and an incongruity of the combined lumina are discussed. Independent of localisation and grade of the stricture, repeated dilation was a successful therapy in all 5 cases.

Adenocarcinoma↗