Woosuk Chung1, Yeomyung Yoon2, Jae Woo Kim3, Sun In Kwon3, Jung Bo Yang4, Ki Hwan Lee4, Heon Jong Yoo5. 1. Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejon, South Korea; Department of Anesthesia and Pain Medicine, Chungnam National University College of Medicine, Daejon, South Korea. 2. Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejon, South Korea. 3. Clinical Trials Center, Chungnam National University Hospital, Daejon, South Korea. 4. Department of Obstetrics and Gynecology, Chungnam National University Hospital, Daejon, South Korea; Department of Obstetrics and Gynecology, Chungnam National University College of Medicine, Daejon, South Korea. 5. Department of Obstetrics and Gynecology, Chungnam National University Hospital, Daejon, South Korea; Department of Obstetrics and Gynecology, Chungnam National University College of Medicine, Daejon, South Korea. Electronic address: bell4184@gmail.com.
Abstract
OBJECTIVE: The purpose of this study was to compare the analgesic effect of surgical bilateral rectus sheath block (BRSB) and ultrasonography-guidance BRSB in patients undergoing single port laparoscopic surgery (SPLS) for ovarian cyst. STUDY DESIGN:Seventy-five patients were randomly allocated into three groups: the control and ultrasound (US)-guidance group (n=25, each) received BRSB with 10ml of normal saline or 0.5% ropivacaine bilaterally under US guidance at the end of surgery, respectively; the surgical group (n=25) received BRSB with10ml of 0.5% ropivacaine bilaterally just before suturing the surgical site. All patients received intravenous fentanyl 50μg for postoperative pain before emergence from anesthesia. Additional self-administered fentanyl and pain intensity were measured at postoperative 1, 6, 10 and 24h. RESULTS: Demographic characteristics showed no significant group-wise differences. The cumulative amount of fentanyl delivered was significantly lower in the US-guidance and surgical BRSB groups (189.20μg and 187.68μg, respectively) than the control group (286.40μg) on postoperative day 1 (P<0.001). At 24h, the median pain score was significantly lower only in the surgical BRSB group. In addition, opioid-related side effects were decreased in patients who received BRSB (control group 36% vs. US-guidance BRSB group 24% vs. surgical BRSB group 12%). CONCLUSIONS: Both US-guided and surgical BRSB were effective for pain control in patients undergoing SPLS. Thus, surgical BRSB can be performed by gynecologists intra-operatively, for post-operative pain management.
RCT Entities:
OBJECTIVE: The purpose of this study was to compare the analgesic effect of surgical bilateral rectus sheath block (BRSB) and ultrasonography-guidance BRSB in patients undergoing single port laparoscopic surgery (SPLS) for ovarian cyst. STUDY DESIGN: Seventy-five patients were randomly allocated into three groups: the control and ultrasound (US)-guidance group (n=25, each) received BRSB with 10ml of normal saline or 0.5% ropivacaine bilaterally under US guidance at the end of surgery, respectively; the surgical group (n=25) received BRSB with10ml of 0.5% ropivacaine bilaterally just before suturing the surgical site. All patients received intravenous fentanyl 50μg for postoperative pain before emergence from anesthesia. Additional self-administered fentanyl and pain intensity were measured at postoperative 1, 6, 10 and 24h. RESULTS: Demographic characteristics showed no significant group-wise differences. The cumulative amount of fentanyl delivered was significantly lower in the US-guidance and surgical BRSB groups (189.20μg and 187.68μg, respectively) than the control group (286.40μg) on postoperative day 1 (P<0.001). At 24h, the median pain score was significantly lower only in the surgical BRSB group. In addition, opioid-related side effects were decreased in patients who received BRSB (control group 36% vs. US-guidance BRSB group 24% vs. surgical BRSB group 12%). CONCLUSIONS: Both US-guided and surgical BRSB were effective for pain control in patients undergoing SPLS. Thus, surgical BRSB can be performed by gynecologists intra-operatively, for post-operative pain management.