Abstract:Purpose: To study thermal variations obtained through infrared image in rats, and to evaluate the relationship between intestinal ischemic time and histopathological findings. Methods: Thirty Wistar rats were operated after distribution in 5 groups with different times of ischemia. Thermograms were obtained by using a infrared camera. The surgical technique has been standardized for all groups: abdominal cavity opening by a 5cm length incision in the midline, abdominal wall plans section and cavity exposure, a… Show more
“…The images were analyzed using a temperature ranging from 36.0°C to 27.0°C, with a mean temperature of 28.5°C, following the values of the Continuous Colorimetric Scale, in which the colors white, red, yellow, green, blue, purple, and black, represented, respectively, a decreasing range of temperature areas, from the hottest to the coldest …”
Section: Resultsmentioning
confidence: 99%
“…The images were analyzed using a temperature ranging from 36.0°C to 27.0°C, with a mean temperature of 28.5°C, following the values of the Continuous Colorimetric Scale, in which the colors white, red, yellow, green, blue, purple, and black, represented, respectively, a decreasing range of temperature areas, from the hottest to the coldest. 11 The quantitative analysis of Figure 1(A,B), used for basal control, according to the area, shape, symmetry, and temperature distribution showed an asymmetric pattern due to the presence of fat located in the lower abdomen and showed a higher temperature in Sp2 (32.…”
The observed data indicate that there was a significant decrease in the temperature during the cooling phase, whereas in the recovery phase, the inverse was found.
“…The images were analyzed using a temperature ranging from 36.0°C to 27.0°C, with a mean temperature of 28.5°C, following the values of the Continuous Colorimetric Scale, in which the colors white, red, yellow, green, blue, purple, and black, represented, respectively, a decreasing range of temperature areas, from the hottest to the coldest …”
Section: Resultsmentioning
confidence: 99%
“…The images were analyzed using a temperature ranging from 36.0°C to 27.0°C, with a mean temperature of 28.5°C, following the values of the Continuous Colorimetric Scale, in which the colors white, red, yellow, green, blue, purple, and black, represented, respectively, a decreasing range of temperature areas, from the hottest to the coldest. 11 The quantitative analysis of Figure 1(A,B), used for basal control, according to the area, shape, symmetry, and temperature distribution showed an asymmetric pattern due to the presence of fat located in the lower abdomen and showed a higher temperature in Sp2 (32.…”
The observed data indicate that there was a significant decrease in the temperature during the cooling phase, whereas in the recovery phase, the inverse was found.
“…The ideal evaluation method of intestinal perfusion should be easily accessed in the operating room, quick to use, have good accuracy, low cost and be minimallyinvasive 12 . The fluorescence method with intravenous administration of fluorescein and examination under ultraviolet light meet all these criteria 7,[10][11][12]14 . The present study comprised a control group (non-ischemic anastomosis) and three intervention groups with varying degrees of ischemic colonic anastomosis in rats.…”
Section: ■ Resultsmentioning
confidence: 99%
“…Therefore, a rigorous intraoperative evaluation of the intestinal perfusion is essential for the prevention of anastomotic dehiscence 1,6 . Clinical tests to predict the occurrence of anastomotic dehiscence have very low accuracy, with a failure rate up to 60% 4,[7][8][9] . Several studies have been conducted to find an objective and reliable method of intraoperative evaluation of intestinal blood supply in the last four decades 2,3,7,[10][11][12][13][14] .…”
Section: ■ Introductionmentioning
confidence: 99%
“…Clinical tests to predict the occurrence of anastomotic dehiscence have very low accuracy, with a failure rate up to 60% 4,[7][8][9] . Several studies have been conducted to find an objective and reliable method of intraoperative evaluation of intestinal blood supply in the last four decades 2,3,7,[10][11][12][13][14] . To present date, no method has been accepted as the standard for this matter, however fluorescence tests have gained some attention [16][17][18][19][20][21][22] .…”
Methods: This experimental controlled trial randomly assigned 55 rats to four groups. Anastomoses were performed in non-ischemic colon segments (control group) and in ischemic colon segments measuring 1, 2 or 3 cm long (groups 1, 2 and 3, respectively). Fluorescein was injected and the tissues were examined under ultraviolet light. Seven days later, a second-look surgery was performed to check for the presence or absence of anastomosis dehiscence. Results: Twenty-four rats presented anastomotic dehiscence during the second-look surgery. Reticular and nonfluorescent patterns were significantly associated with the occurrence of anastomotic dehiscence. Fluorescein fluorescence had a sensitivity of 95.8%, specificity of 89.2%, positive predictive value of 88.4%, negative predictive value of 96.2%, and accuracy of 92.3% to predict anastomotic dehiscence. Conclusion: Fluorescein fluorescent test can accurately predict leak in a model of ischemic colonic anastomosis in rats.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.