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| Methods | RCT |
| Participants | 40 participants undergoing colon cancer surgery |
| Interventions |
Intervention: thoracic epidural anaesthesia/analgesia with ropivacaine and sufentanil for 72 hours (n = 20) Control: IV patient‐controlled analgesia with sufentanil (n = 20) General anaesthesia for all participants |
| Outcomes | Pain at rest and during coughing at 2, 24 and 48 hours after operation Vascular endothelial growth factor C Cytokines |
| Notes | ChiCTR.org ID ChiCTR‐TRC‐13003146 |
