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Previous studies have shown that PVB reduces pain and postoperative nausea and vomiting after breast cancer surgery when used in addition to general anesthesia or sedation. However, major breast cancer surgery involves areas beyond the breast tissue, such as pectoral musculature.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| PECS 0 | receiving paravertebral block | ||
| PECS 1 | receiving paravertebral block and blocks targeting pectoral musculature |
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| Measure | Description | Time Frame |
|---|---|---|
| intraoperative sedation requirement | target controlled infusion (TCI) propofol driven by the Schnider model in effect site control titrated to reach conscious sedation defined as Observer Assessment of Alertness/Sedation score of 2 to 3 | during operation |
| Measure | Description | Time Frame |
|---|---|---|
| time to first request of analgesics | postoperative 12 hours | |
| postoperative analgesic requirement | postoperation to discharge | |
| side effects |
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Inclusion Criteria:
Exclusion Criteria:
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Eligible patients were that diagnosed to have unilateral breast cancer and undergone modified radical mastectomy using regional anesthesia during Jun 1, 2012 and May 31, 2015.
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| postoperation to within 24 hours after discharge |