UNASSIGNED: Pain is a major challenge in performing ultrasound-guided percutaneous microwave ablation (PMWA) of uterine myomas. Inadequate analgesia by local anesthetics hinders the possibility of conducting PMWA of uterine myomas in the Ambulatory Surgery Center (ASC) of the Department of Ultrasound.
UNASSIGNED: The superior hypogastric plexus (SHP) forms a suitable target for pain relief through the blockade, as it contains nociceptive afferent fibers from pelvic organs such as the uterus, rectum, and bladder. Superior hypogastric plexus block (SHPB) has demonstrated promise as an alternative treatment option for alleviating pelvic pain, reducing opioid consumption, and improving quality of life. This study aims to evaluate the efficacy of ultrasound-guided SHPB combined with conscious sedation as an alternative anesthesia option for ambulatory patients receiving ultrasound-guided PMWA of uterine myomas.
UNASSIGNED: This randomized controlled trial (RCT) will be carried out at the Department of Ultrasound, The First Affiliated Hospital of Xiamen University. Women scheduled for ultrasound-guided PMWA of uterine myomas will be eligible. 86 patients will be recruited and randomly assigned to either the intervention or control groups in a 1:1 ratio. The intervention group will undergo ultrasound-guided superior hypogastric plexus block (SHPB) combined with conscious sedation, while the control group will receive local anesthesia combined with conscious sedation. The primary outcome is the success rate of anesthesia, secondary outcomes include vasoactive drug consumption, acetaminophen consumption, sleep quality, sonographer satisfaction score, patient satisfaction score, the detained time in hospital, and adverse events.
UNASSIGNED: This RCT represents the inaugural effort to specifically evaluate the safety and efficacy of ultrasound-guided SHPB combined with conscious sedation in patients undergoing ultrasound-guided PMWA of uterine myomas and will provide valuable evidence and insight into the analgesic management of this ambulatory surgery.
UNASSIGNED: This study has been approved by the Ethics Committee of the First Affiliated Hospital of Xiamen University (Scientific Research Ethics Review 2023, No. 139). The results will be submitted for publication in peer-reviewed journals.

We aimed to evaluate the efficacy of superior hypogastric plexus (SHP) block in pain relief among women undergoing hysterectomy. Cochrane Library, PubMed, ISI web of science, and Scopus were searched from inception to May 2021 for the available randomized clinical trials (RCTs). We included RCTs that compared SHP block (intervention group) to saline (control group) in hysterectomy. Our primary outcomes were pain scores at different time intervals using the Visual Analog Scale (VAS). Our secondary outcomes were postoperative opioid consumption within 24 hours and postoperative nausea and vomiting incidence. We extracted the available data from included studies and pooled them in a meta-analysis model using RevMan software. Four RCTs with a total number of 289 patients met our inclusion criteria. The VAS pain scores were significantly declined at post-anesthesia care unit (PACU), 2, 6, and 12 hours postoperatively among SHP block group (p < 0.05). However, no significant difference was reported in VAS pain score 1 day postoperatively between intervention and control groups. Moreover, SHP block significantly reduced the postoperative opioid consumption and incidence of nausea and vomiting (p = 0.03 & p = 0.003). In conclusion, superior hypogastric plexus block effectively reduces postoperative pain, opioid consumption, and incidence of nausea and vomiting post-hysterectomy.

We aimed to investigate the effect of superior hypogastric plexus (SHP) block on pain relief and quality of life of patients with refractory endometriosis. Sixteen patients with refractory endometriosis underwent SHP block. The outcome measures included visual analogue scale (VAS) for chronic pelvic pain, VAS for dysmenorrhoea, and VAS for dyspareunia. The short-form endometriosis health profile (EHP-5) was used to measure quality of life. All the outcome measures were evaluated at weeks 0, 1, 4, 12 and 24. The mean baseline VAS scores significantly improved after the SHP block (p < .001 for all). The mean overall EHP-5 score also significantly improved from 54.3 ± 18.2 to 24.6 ± 13.3 (p < .001). The positive effects of SHP were not diminished over time. No serious adverse effect was noticed in any of the patients. Preliminary results suggest that SHP block could be used as an effective method in pain control and improvement of quality of life in refractory endometriosis.IMPACT STATEMENTWhat is already known on this subject? Safety and efficacy of SHP block in the treatment of CPP has been revealed in earlier investigations. However, the efficacy of SHP block for pain management in patients with refractory endometriosis has not been investigated in earlier investigations.What do the results of this study add? SHP block is an effective method for pain control and improvement of quality of life in patients with refractory endometriosis. The positive effects of this treatment did not diminish over 24-weeks follow-up of the study. No serious adverse effect was noticed in any of the patients.What are the implications of these findings for clinical practice and/or further research? Preliminary results suggest that SHP block could be used safely and effectively for controlling pain and improvement of quality of life in patients with refractory endometriosis.

Mayer-Rokitansky-Küster-Hauser syndrome is an uncommon disorder of mullerian agenesis where patients face multiple challenges like difficulty or inability to conceive and have sexual intercourse and chronic abdominal pain. This is a case report of a patient with Mayer-Rokitansky-Küster-Hauser syndrome who presented to the pain clinic with severe cyclical pelvic pain unresponsive to conservative treatment. This case was successfully managed with three ultrasound-guided superior hypogastric plexus blocks. This case illustrates that acute pelvic pain in MKRS patients can be effectively treated with bedside ultrasound-guided superior hypogastric plexus blocks. However, a GnRh analogue or hysterectomy is recommended for definitive treatment.

Background: With increasing cesarean section rates all around the world, postoperative pain management is an important issue for all women. Good postoperative pain management helps to shorten the recovery period of the mother, improve the mother\'s feeling of well-being, enable good breastfeeding, and provide optimum maternal-neonatal bonding.Objective: To evaluate the efficacy of intraoperative superior hypogastric plexus block (SHPB) during cesarean section and describe the technique.Study design: This was a prospective quasi-experimental study that was conducted with 69 pregnant women at HSU. Kocaeli Derince Training and Research Hospital Obstetrics and Gynecology Clinics between 15 March 2018 and 15 August 2018. The case group included 34 healthy pregnant women who received SHPB (SHPB+) for postoperative pain relief during cesarean section under general anesthesia, and the control group included 35 healthy pregnant women who did not receive SHPB during cesarean section with general anesthesia (SHPB-). Postoperative 1st hour, 6th hour, 12th hour, 24th hour, and 48th hour visual analog scale (VAS) scores, the amount of analgesics used for pain relief, and the time of the postoperative first gas extraction were assessed.Results: The SHPB (+) group had lower 1st hour VAS scores than the SHPB (-) group (p < .001). The mean postoperative 1st hour VAS score of the SHPB (+) group was 4.74 ± 1.44, and was 6.80 ± 2.08 for the SHPB (-) group. There were no differences in postoperative 6th hour, 12th hour, 24th hour, and 48th hour VAS scores between the groups. When the SHPB (+) and SHPB (-) groups were compared for postoperative analgesic use and for the first postoperative gas extraction time, the SHPB (+) group had lower analgesic use (p < .001), and the SHPB (-) group had earlier gas extraction. The mean analgesic use in the SHPB (+) group was 2.29 ± 1.11 and it was 4 ± 0.84 in SHPB (-) group. The mean gas extraction time for the SHPB (-) group was 18.03 ± 7.2 h, and was 24.56 ± 8.56 h for the SHPB (+) group (p = .001).Conclusion: SHPB performed intraoperatively in cesarean section procedures with general anesthesia is a simple, easy approach to perform during open surgery with direct vision. SHPB helps postoperative pain management extensively with low postoperative VAS scores and low analgesic requirement.

The superior hypogastric plexus (SHP) is a complex nervous collection located at the lumbosacral region below the level of the aortic bifurcation. As a part of the autonomic nervous system, it is an extension of the preaortic plexuses and continues bilaterally as the hypogastric nerves that ultimately contribute to the inferior hypogastric plexus. Although commonly described as a plexiform structure, several morphologic variations exist. Damage to the SHP can occur during anterior and anterolateral approaches to the lumbosacral spine leading to dysfunction of the abdominopelvic viscera. Visceral afferents travel in the SHP and are responsible for transmitting pain. Management therapies such as SHP blockade or presacral neurectomy can reduce pelvic pain caused by cancer and nonmalignant etiologies. This review highlights some of the recent findings regarding the nature of the SHP.

To evaluate the effect of intraoperative superior hypogastric blocks on postoperative pain management.
Prospective observational cohort study (Canadian Task Force classification II-2).
Kocaeli Derince Training and Research Hospital, University of Health Sciences, Department of Anesthesiology and Reanimation, Department of Gynecology and Obstetrics, Kocaeli, Turkey.
Sixty female patients who underwent elective laparoscopic hysterectomy were included in this study. Patients were divided into 2 groups: those who had intraoperative superior hypogastric plexus (SHP) block (Hypo; n = 30) and those who did not have intraoperative SHP block (No-Hypo; n = 30).
Intraoperative SHP blocks were performed with the modified laparoscopic technique previously described by us.
Rescue analgesic time was calculated in minutes as the time interval between the last administration of analgesic in the operating room or postanesthesia care unit and the first analgesic demand in the surgical ward. Rescue analgesic times were found to be significantly higher in the Hypo group. Nonsteroidal anti-inflammatory drugs and opioid requirements in the postanesthesia care unit and in the surgical ward were significantly lower in the Hypo group. There was no difference between groups in postoperative nausea and vomiting.
Intraoperative SHP block is a preferable modality for postoperative analgesia in patients undergoing hysterectomy. The surgical laparoscopic modified anterior approach we describe is an uncomplicated and easily applicable method. More effective results would be seen if used together with wound site local anesthetic infiltration or abdominal wall plane blocks. (Clinical trial registration no. NCT03427840.).

Superior hypogastric plexus block (SHGPB) is technically difficult, and an accurate procedure is required to avoid potential complications. We attempted to determine the reference angles for fluoroscopy-assisted SHGPB and to establish a predictor as a guide to select the optimal approach between the classic posterior approach and transdiscal approach.
Abdominopelvic computed tomography (CT) scans from 268 patients diagnosed with pelvic malignancies were examined. The oblique and axial angles needed for the fluoroscope were measured both for posterior and transdiscal approaches by simulating the needle trajectory on CT imaging. We developed an SHGPB index defined by the ratio (%) of the interposterior iliac border distance to the L5 body transverse diameter, which represents the relative transverse diameter of the bony pelvis. We evaluated whether it can help select the optimal approach for the SHGPB between the posterior and transdiscal approaches.
Males had a significantly smaller angle than females (right oblique angle for posterior approach, males 14 [range 12 to 17] degrees vs. females 19 [range 16 to 23] degrees; P < 0.001). An SHGPB index of < 150 was an independent predictor for failure of the classic posterior approach (odds ratio 31.3, 95% confidence interval 5.1 to 104.7).
The optimal right oblique angle of fluoroscopy for the posterior approach is 13° to 15° in males and 19° to 20° in females. The transdiscal approach may be favored over the posterior approach when the bony pelvis is narrow relative to the target vertebral body, which can be measured by the SHGPB index being < 150.

OBJECTIVE: To determine whether superior hypogastric plexus block performed during abdominal hysterectomy decreases postoperative opioid consumption and pain.
METHODS: A randomised, double-blind, placebo-controlled, clinical trial.
METHODS: A county hospital in Sweden.
METHODS: Sixty-eight women scheduled for total abdominal hysterectomy for a benign indication.
METHODS: Twenty ml of ropivacaine 7.5 mg/ml or saline was injected retroperitoneally in the area of the superior hypogastric plexus during the hysterectomy. The participants were individually randomised to either intervention. The participants, caregivers, and those assessing the outcomes were blinded to group assignment.
METHODS: The primary outcomes were postoperative opiate consumption and patients\' self-assessment of pain (VAS scores). Secondary outcomes were mobilisation and side effects related to opiate consumption.
RESULTS: The trial was completed with 38 women randomised to ropivacaine and 37 women randomised to saline. Analysis was performed on 35 women in the ropivaciane group and 33 women in the saline group. The postoperative opioid consumption was significantly lower in the ropivacaine group than in the placebo group (median 55.8 and 72.4 mg, respectively, P = 0.032). The proportion of women scoring VAS <4 at 2 hours after block was significantly higher in the ropivacaine group (63%) than in the placebo group (25%) (P = 0.015). No side effects or important adverse events occurred during the trial.
CONCLUSIONS: The superior hypogastric plexus block is a new method in this context and a promising contribution to postoperative pain treatment after abdominal hysterectomy.
UNASSIGNED: Superior hypogastric plexus block during abdominal hysterectomy lowers opioid consumption.

The neurolytic blocks of sympathetic pathways, including celiac plexus block (CPB) and superior hypogastric plexus block (SHPB) , have been used for years. The aim of this review was to assess the evidence to support the performance of sympathetic blocks in cancer patients with abdominal visceral pain. Only comparison studies were included. All data from the eligible trials were analyzed using the GRADE system. Twenty-seven controlled studies were considered. CPB, regardless of the technique used, improved analgesia and/or decrease opioid consumption, and decreased opioid-induced adverse effects in comparison with a conventional analgesic treatment. In one study patients treated with superior hypogastric plexus block (SHPB) had a decrease in pain intensity and a less morphine consumption, while no statistical differences in adverse effects were found. The quality of these studies was generally poor due to several limitations, including sample size calculation, allocation concealment, no intention to treat analysis. However, at least two CPB studies were of good quality. Data regarding the comparison of techniques or other issues were sparse and of poor quality, and evidence could not be analysed. On the basis of existing evidence, CPB has a strong recommendation in patients with pancreatic cancer pain. There is a weak recommendation for SHPB, that should be based on individual conditions. Data regarding the choice of the technique are sparse and unfit to provide any recommendation.