Abstract
Purpose
Major open surgery for gynecologic cancer usually involves a long midline skin incision and induces severe postoperative surgical site pain (POSP) that may not be effectively controlled with the conventional management. We investigated whether combining a continuous wound infiltration system (CWIS, ON-Q PainBuster®) and intravenous patient-controlled analgesia (IV PCA) effectively decreases POSP, compared with IV PCA alone, in gynecologic oncology patients.
Methods
This retrospective study included 62 Korean patients who received a long midline skin incision during gynecologic cancer surgery. The combined therapy group (n = 31), which received CWIS (0.5% ropivacaine infused over 72 h) and IV PCA (fentanyl citrate), and the IV PCA only group (n = 31) were determined using 1:1 matching. POSP was assessed using resting numeric rating scale (NRS) scores measured for 96 h after surgery, which were analyzed using a linear mixed model.
Results
The slopes of the predicted NRS values from the linear mixed model were significantly different between the groups. Compared with the control group, the combined therapy group had lower predicted NRS scores for the first 72 h, but higher predicted scores between 72 and 96 h. Moreover, the mean NRS scores over the first 48 h postoperation were significantly lower in the combined therapy group than in the control group; the scores were similar in both groups during the remaining period. With the exception of a higher body mass index in the CWIS group, the other variables, such as the dosage and usage time of fentanyl citrate, use of additional painkillers, and side effects, including wound complications, did not differ between groups.
Conclusions
Combined therapy using CWIS and IV PCA may be a useful strategy for POSP management in gynecologic oncology patients.
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Author contributions
BL: Manuscript writing, protocol/project development, data collection, and data analysis. KK: Protocol/project development, data collection, data analysis, and manuscript editing. SA: Data management and data analysis. HJS: Manuscript revising. DHS: Data collection. JHN: Protocol/project development and manuscript revising. YBK: Protocol/project development, data collection, data analysis, and manuscript editing.
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The authors declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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B. Lee and K. Kim contributed equally to this work and are co-first authors.
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Lee, B., Kim, K., Ahn, S. et al. Continuous wound infiltration system for postoperative pain management in gynecologic oncology patients. Arch Gynecol Obstet 295, 1219–1226 (2017). https://doi.org/10.1007/s00404-017-4342-8
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DOI: https://doi.org/10.1007/s00404-017-4342-8