| Patient identifier (name, date of birth) |
| Consent form signed |
| Responsible adult available to escort the patient post-procedure |
| Adequate fasting period |
| Allergies |
| Hepatic and renal function (if the clinical history suggests these could be abnormal) |
| Observations (vital signs) |
| Continuous pulse oximetry available |
| Intravenous access functioning |
| Medications checked |
| Resuscitation trolley available with emergency drugs |
| Reversal drugs available (flumazenil and naloxone) |
| Oxygen available (including variety of oxygen delivery devices) |
| All staff ready for the procedure to commence |
Data from [22].