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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of a simple valve mechanism used to stabilize intraabdominal pressure during surgically induced pneumoperitoneum in small animals

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Author(s):
Iorio, Brayner [1] ; de Barros, Rogerio F. [2] ; Miranda, Marcio L. [3] ; de Oliveira-Filho, Antonio Goncalves [4] ; Bustorff-Silva, Joaquim M. [5]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas. Sch Med
[2] Univ Estadual Campinas. Sch Med
[3] Univ Estadual Campinas. Sch Med
[4] Univ Estadual Campinas. Sch Med
[5] Univ Estadual Campinas. Sch Med
Total Affiliations: 5
Document type: Journal article
Source: SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES; v. 26, n. 2, p. 528-532, FEB 2012.
Web of Science Citations: 1
Abstract

Preventing sudden changes in intraabdominal pressure (IAP) during surgical pneumoperitoneum may reduce adverse events. This study aimed to describe a valve system that stabilizes intraabdominal pressure, minimizing complications of erratic fluctuations in IAP. Five male Sprague-Dowley rats were submitted to pneumoperitoneum, with the insufflator set sequentially at 5, 10, and 15 mmHg for each rat. Measures of IAP were taken initially without the valve and then using the same insufflator levels with the valve system regulated to three different pressures (5, 10, and 15 mmHg). The mean of the three highest registered pressures during a 15-min observation was used as the maximal pressure, and the mean of the three lowest registered pressures was used as the minimal pressure for each experimental setting. Without the valve system, the pressure level set by the insufflator correlated poorly with the actual IAP. When the valve system was used, the IAP pressure was limited by the valve settings regardless of the insufflator settings. Also, the variability of IAP was significantly higher when no valve was used than in all situations that had implementation of the system. The valve system was very effective in stabilizing IAP, allowing a reproducible and reliable estimate of IAP and greatly reducing the variability resulting from the cycling mechanism of the insufflator. Due to the small dimensions of intracorporeal cavities in the newborn, this mechanism may help to improve safety when neonatal video-assisted surgery is performed. (AU)

FAPESP's process: 10/01085-1 - Evaluation of a valve mechanism to stabilize intraabdominal pressure during surgical induced pneumoperitoneum in small animals.
Grantee:Brayner Dulfes Luis Marques Iorio
Support Opportunities: Scholarships in Brazil - Scientific Initiation