| Why carry out this study? |
| The acute pain service (APS) model does not solve the high incidence of postoperative pain. |
| A new pain management model (virtual pain unit) VPU was established and compared with APS. |
| What was learned from the study? |
| The VPU model is associated with improved quality of postoperative analgesia. |
| The VPU model reduced the incidence of moderate to severe postoperative pain nausea and vomiting and dizziness compared with the APS model. |
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