Evaluation of a New Protocol for Adult Procedural Sedation With Ketamine-propofol in a 1 on 4 Ratio

"The participant was brought to a zone where advanced life support could be optimally administered and where all necessary drugs and materials for treatment of complications are present. Oxygen saturation, continuous electrocardiogram, intermittent blood pressure measurement (every 2 minutes) and capnography were applied. A 20 gauge intravenous line was inserted. The participant was placed in semi-recumbent position and was given oxygen for at least 3 minutes through a non-rebreather mask unless contra-indications applied.~Ketofol 1 on 4 was prepared by mixing 1ml of ketamine (50mg) and 20ml of propofol (200mg) in a single syringe. It was administrated as a loading dose of 1ml/10kg, corresponding to 0,952mg/kg propofol and 0,238mg/kg ketamine, and followed by titration in aliquots of 0,5ml/10kg every 1 to 2 minutes until desired depth of sedation was achieved, and then every 3-5 minutes to retain the desired depth of sedation. The loading dose was halved if above 65 years."