IONM identified 97.5% of EBSLN cases. It was higher than the visual identification. There were no injuries to EBSLN identified through IONM.

The cholecystitis characterized by being an inflammatory process, related to the presence of stones, in the gallbladder hepatic cholestasis and chronic gallbladder infection. Prevalence may vary, but most of the patients are over 40 years old, at the time of diagnosis. However, within the eastern zone of the Estado de Mexico, reports indicate several cases in adolescents, mainly pregnant women. Therefore in this study, the evaluation of said prevalence was carried out in adolescents, as well as its risk factors. A crosssectional analytical observational study was conducted, and a data analysis as carried out to show the risk factors, within the study there are patients diagnosed with cholecystitis from august 2015 to august 2018; 1069 patients were included and divided into two groups PT, (over 30 years old) and PA (under 30 years old), of the 5 factors proposed, an analysis was carried out. The pregnancies number was 1.69±1.27 for the group PA and 2.42±1.57 for the group. PT. In the group PA 84 patients (56.37) %, used some type of hormonal contraceptive, and 94 patients (70.97%), reported any history of gallstones in a first-degree relative. The prevalence of cholecystitis in patients under 30 years old in the Hospital Regional de Alta Especialidad de Ixtapaluca, it´s 21.42% according those reported, this value shows a high prevalence in this population; overweight and obesity in addition to teenage pregnancies, may have a strong relationship with the development of gallstones lithiasis. Family history and contraceptive use in the development of cholecystitis representative possibly a more relevant risk factor in our young population.

No abstract