BackgroundMechanical bowel preparation before colorectal surgery is commonly performed, but its benefits are controversial. The aim of this study was to compare the effects of mechanical bowel preparation on healing of colonic anastomosis and tissue strength.Material/MethodsAfter institutional review board approval, 20 adult Wistar albino rats were randomly divided into 2 groups of 10 animals each. Mechanical bowel preparation including sodium phosphate was performed on the experimental group via a feeding tube, whereas no bowel preparation procedures were performed on the control group. Transverse colon resection and anastomosis were performed on all rats under general anaesthesia. On postoperative day 5, re-laparotomy was performed and the anastomotic areas were resected. Animals were killed, after which bursting pressure and tissue hydroxyproline concentrations were measured, histopathological examination was performed, and we evaluated and compared the results.ResultsThere were no differences between control and experimental groups in bursting pressure, tissue hydroxyproline concentrations, or histopathological examination results (P>0.05).ConclusionsOur study demonstrated no significant difference between bursting pressures, tissue hydroxyproline levels, or modified wound healing score at postoperative day 5 between rats undergoing and not undergoing mechanical bowel preparation. Mechanical bowel preparation is not essential for healing or strength of colonic anastomosis in rats.

BackgroundToxicity of calcium channel blockers leads to high patient mortality and there is no effective antidote. The benefit of using 20% lipid emulsion and sugammadex has been reported. The present study measured the effect of sugammadex and 20% lipid emulsion on hemodynamics and survival in a rat model of verapamil toxicity.Material/MethodsIn this single-blinded randomized control study, rats were separated into 4 groups of 7 rats each: Sugammadex (S), Sugammadex plus 20% lipid emulsion (SL), 20% lipid emulsion (L), and control (C). Heart rates and mean arterial pressures were monitored and noted each minute until death.ResultsAverage time to death was 21.0±9.57 minutes for group C, 35.57±10.61 minutes for group S, 37.14±16.6 minutes for group L and 49.86±27.56 minutes for group SL. Time to death was significantly longer in other groups than in the control group (p<0.05).ConclusionsVerapamil overdose is has a comparatively high mortality rate and there is no effective antidote. Treatment generally involves gastric decontamination and symptomatic treatment to counteract the drug’s negative effects. In animal studies sugammadex and lipid emulsion had a positive effect on survival in patients with calcium channel blocker toxicity. Sugammadex and intralipid increased survival in a rat model of verapamil toxicity. The combination of both drugs may decrease cardiotoxicity. Sugammadex alone or combined with 20% lipid emulsion reduce the need for inotropic agents. The mechanism requires clarification with larger studies.