Bispectral Index Monitoring During Anesthesiologist - Directed Sedation in Scheduled Colonoscopies

Observational study in patients undergoing scheduled colonoscopy in endoscopy rooms of the Galdakao-Usansolo Hospital. The investigators objectified the level of sedation that was performed in these procedures using Bispectral Index Monitoring, as well as the total dose of medication required and the level of satisfaction obtained after completing the sedation. The incidence of hemodynamic and respiratory complications observed was included, as well as the treatment needed to solve them.

A total of 196 patients were needed to obtain statistically significant results. Qualitative variables are expressed in the form of freguencies and percentages and continuous variables in the form of means and stnadard deviations. Comparisions of percentages were made by the Chi square test and the difference of means in the continuous variables by the t test.Stadistical significance will be assumed when p<0.05. All estadistical analyzes were carried out using SAS V9.4 (SAS Institute, Inc., Carey, NC).

Inclusion criteria

• Indication of scheduled colonoscopy.
• Classification of physical status ASA I, II and III.
• Intermitent or persistent mild asthma.
• Body Mass Index (BMI) < 35 kg/m2.
• Intact neurological capacity.
• Acceptance to participate in the study after signing written informed consent.

Exclusion criteria

• ASA IV.
• BMI > 35 kg/m2.
• Allergy to any of the medications using in sedation, or its components.
• Known mental or neurological disease.
• Chronic Obstructive Pulmonary Disease (COPD) or Obstructive Sleep Apnea.
• Chronic opiate users.
• Refusal to participate in the study.