Kim 2004.
Methods | Parallel‐group randomized trial conducted in Korea. | |
Participants | 66 women, ASA physical status I or II, undergoing sevoflurane general anaesthesia for minor breast surgery. Exclusion criteria were women with respiratory, circulatory or neurological disease, liver or kidney dysfunction, nausea or vomiting in the 24 h before surgery, receiving antiemetics, pregnant women and excessively obesity. | |
Interventions | Group 1: Transcutaneous electrical stimulation (ReliefBand) on P6 acupoint 10 min before surgery and left in place for 24 h. Bilateral or unilateral simulation not reported (n = 33). Group 2: Sham transcutaneous electrical stimulation (inactivated ReliefBand) on P6 acupoint 10 min before surgery and left in place for 24 h. Bilateral or unilateral sham simulation not reported (n = 33). |
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Outcomes | Nausea (0 ‐ 24 h), vomiting (0 ‐ 24 h), risk of rescue antiemetic drug (ondansetron 4 mg IV). | |
Notes | Descriptive data taken from information in Kim 2012. | |
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Insufficient details. |
Allocation concealment (selection bias) | Unclear risk | Insufficient details. |
Blinding of patients (performance bias) All outcomes | Low risk | Inactivated device that looks similar to the real device. |
Blinding of healthcare providers (performance bias) All outcomes | Unclear risk | Insufficient details. |
Blinding of outcome assessor (detection bias) All outcomes | Low risk | Unaware of allocated treatment at both baseline and postoperative evaluations. |
Incomplete outcome data (attrition bias) All outcomes | Low risk | No reported dropouts or withdrawals. |
Selective reporting (reporting bias) | Low risk | All expected measured outcomes were reported. |
Other bias | Low risk | Baseline characteristics were comparable. |