Analyses Strategy: The independent samples t-test will be used to compare differences in mean total sedation time and recovery time between the Ketamine and Ketamine-Propofol groups. The Mann-Whitney test will be used to compare differences in satisfaction levels (measured on an ordinal scale) between groups. Differences in proportions of complications during the procedure and adverse events during recovery will be assessed by the Chi-Square test between groups. A p value <0.05 will be considered statistically significant.