Page 15 - CASA Bulletin of Anesthesiology 2022; 9(5)

Vol. 9, No 5, 2022

Patients in group 1 received a single bolus dose without additional supplementation, and
patients in group 2 received a bolus dose, immediately followed by an additional 10 mg of
ketamine. Patients in group 3 received a bolus dose of A6-2-2 mixture. All patients received
supplemental O2 via nasal cannula.

Maintenance of Intraoperative Sedation

Following the initial bolus dose, patients were monitored closely for ventilation,
oxygenation, blood pressure and heart rate. When patients regained consciousness, continuous
sedation was given by intravenous infusion of the KE6-2-2 mixture at a rate of 12 ml/hr (1 ml/5
min) to 24 ml/hr (2 ml/5 min) to achieve a moderate level (OAA/S= 3) of sedation and ensure
patient comfort, while maintaining the ability to follow commands and remain
motionless. Alternatively, sedation was maintained with a propofol infusion targeting a moderate
level of sedation.

After surgery, all patients entered phase II recovery and were prepared for discharge in the
PACU.

Patient Readiness for Ocular Blocks and Quality Sedation Measurement (Table 2)

OAA/S score 3 (response only after name is called loudly and/or repeatedly, slurring or
prominent slowing in speech, marked facial relaxation with eye glazed and marked ptosis) was
the targeted level of moderate sedation and considered as block readiness. In 312 cases, the time

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