Hypogastric Plexus Research Articles

The Role of Interventional Pain Management Strategies for Neuropathic Pelvic Pain in Endometriosis

BACKGROUND: Endometriosis is a chronic common condition affecting 10% of reproductive-aged women globally. It is caused by the growth of endometrial-like tissue outside the uterine cavity and leads to chronic pelvic pain, affecting various aspects of a woman’s physical, mental, emotional, and social well-being. This highlights the importance of an understanding of the potential involvement of the nervous system and involved nerves as well as an effective multidisciplinary pain management. OBJECTIVES: Our aim was to assess the current understanding of pain mechanisms in endometriosis and the effectiveness of different interventional pain management strategies. STUDY DESIGN: Literature review. METHODS: A search was conducted using multiple databases, including Google Scholar, MEDLINE (Ovid), PubMed, and Embase. We used keywords such as “endometriosis,” “pain,” pelvic pain, “management,” and “anaesthesia” along with Boolean operators and MeSH terms. The search was limited to English language articles published in the last 15 years. RESULTS: Nerve involvement is a well-established mechanism for pain generation in patients with endometriosis, through direct invasion, irritation, neuroangiogenesis, peripheral and central sensitization, and scar tissue formation. Endometriosis may also affect nerve fibers in the pelvic region, causing chronic pelvic pain, including sciatic neuropathy and compression of other pelvic nerves. Endometriosis can cause sciatica, often misdiagnosed due to atypical symptoms. Interventional pain management techniques such as superior hypogastric plexus block, impar ganglion block, S3 pulsed radiofrequency, myofascial pain trigger point release, peripheral nerve hydrodissection, and neuromodulation have been used to manage persistent and intractable pain with positive patient outcomes and improved quality of life. LIMITATIONS: The complex and diverse clinical presentations of endometriosis make it challenging to compare the effectiveness of different pain management techniques. CONCLUSION: Endometriosis is a complex condition causing various forms of pain including nerve involvement, scar tissue formation, and bowel/bladder symptoms. Interventional pain management techniques are effective for managing endometriosis-related pain. KEY WORDS: Endometriosis, chronic pain, therapeutic interventions, interventional techniques, pain injections, visceral pain, peripheral pain

Pre-emptive ultrasound-guided superior hypogastric plexus block in pelvic cancer surgeries: a randomized double-blinded study

BackgroundSuperior hypogastric plexus is a retroperitoneal plexus that receives visceral sensation from pelvic viscera. Superior hypogastric plexus block (SHPB) was used for chronic pelvic pain and recently studied for postoperative pain. We examined the safety and efficacy of preemptive anterior US-guided SHPB to reduce postoperative morphine consumption. Thirty-six patients undergoing pelvic cancer surgery were randomly divided into two equal groups; group S in which patients received anterior US-guided SHPB immediately after induction of general anesthesia and before skin incision using 20 ml bubivacaine 0.5%, group C control group in which 20 ml normal saline was given by the same technique. Patients of both groups received morphine via PCA postoperative and followed for 24 h. In both groups, we measured the total morphine consumption, VAS, vital signs, and side effects.ResultsDemographic data, duration, and type of surgery were comparable in both groups. Total 24 h morphine consumption in mg was significantly lower in group S (43.8 ± 2) than in group C (54.83 ± 2) with P value < 0.001. VAS was significantly lower in group S in all time intervals from 2 till 24 h postoperative. Side effects were minimal with no significant difference between both groups.ConclusionPreemptive US-guided SHPB is a relatively safe and effective method to reduce postoperative opioid demands after pelvic cancer surgeries.Trial registrationClinicalTrials.gov NCT04732234 in 1–2-2021.

The role of intraoperative superior hypogastric plexus blocks in pain management for total abdominal hysterectomy: a comparative study

Objectives: This study aimed to investigate the efficacy of intraoperative Superior Hypogastric Plexus Blocks (SHPBs) in managing postoperative pain following total abdominal hysterectomy, comparing pain scores and analgesic requirements between patients who received SHPBs and those who did not. Methods: A prospective, randomized, controlled trial was conducted on 70 female patients undergoing elective total abdominal hysterectomy. Patients were randomly assigned to either the SHPB group or the non-SHPB group. In the SHPB group, intraoperative SHPBs were administered after uterine removal. Postoperative pain scores were assessed using the Visual Analogue Scale (VAS) at various time points. Analgesic consumption and adverse effects were also recorded. Results: Patients in the SHPB group consistently exhibited lower pain scores compared to the non-SHPB group at various postoperative time intervals (p &amp;lt; 0.05). Initial analgesic requirements were significantly higher in the non-SHPB group, as was total analgesic consumption during the hospital stay (p &amp;lt; 0.05). No significant complications related to SHPB administration were observed. Conclusions: Intraoperative Superior Hypogastric Plexus Blocks demonstrated a potential benefit in reducing postoperative pain scores and analgesic consumption in patients undergoing total abdominal hysterectomy. These findings highlight the potential of SHPBs as an effective approach to enhance pain management in this surgical population, warranting further investigation and refinement of administration protocols.

Perineural Invasion and Spread in Common Abdominopelvic Diseases: Imaging Diagnosis and Clinical Significance.

Malignancies and other diseases may spread by multiple pathways, including direct extension, hematogenous spread, or via lymphatic vessels. A less-well-understood route is the peripheral nervous system, which is known as perineural spread (PNS). In addition to accounting for pain and other neurologic symptoms, PNS affects both disease prognosis and management. Although PNS is commonly discussed in relation to head and neck tumors, there is emerging data regarding PNS in abdominopelvic malignancies and other conditions such as endometriosis. Due to improved contrast and spatial resolution, perineural invasion, a finding heretofore diagnosed only at pathologic examination, can be detected at CT, MRI, and PET/CT. PNS most commonly manifests as abnormal soft-tissue attenuation extending along neural structures, and diagnosis of it is aided by optimizing imaging parameters, understanding pertinent anatomy, and becoming familiar with the typical neural pathways of spread that largely depend on the disease type and location. In the abdomen, the celiac plexus is a central structure that innervates the major abdominal organs and is the principal route of PNS in patients with pancreatic and biliary carcinomas. In the pelvis, the lumbosacral plexus and inferior hypogastric plexus are the central structures and principal routes of PNS in patients with pelvic malignancies. Although the imaging findings of PNS may be subtle, a radiologic diagnosis can have a substantial effect on patient care. Knowledge of anatomy and known routes of PNS and optimizing imaging parameters is of utmost importance in providing key information for prognosis and treatment planning. © RSNA, 2023 Supplemental material and the slide presentation from the RSNA Annual Meeting are available for this article. Quiz questions for this article are available through the Online Learning Center.

The Effectiveness of Superior Hypogastric Plexus Block with Bupivacaine for Pain Relief after Total Abdominal Hysterectomy: A Randomized Controlled Study

Background: Postoperative pain is a major concern after total abdominal hysterectomy (TAH). We suggest that the use of intraoperative superior hypogastric plexus block (SHPB) could be a viable and safe alternative for managing postoperative pain in patients who have undergone TAH. Materials and Methods: After receiving ethical approval, 54 patients who were scheduled for TAH were divided equally into two groups: Group A and Group B. Following the procedure, patients in Group A (n = 27) were injected with 20 ml of 0.25% bupivacaine, whereas patients in Group B (n = 27) were injected with 20 ml of 0.9% saline into the superior hypogastric plexus’s (SHPs) anatomical position. After the surgery and recovery from anesthesia, all patients were administered intravenous morphine at a dosage of 0.1 mg/kg for postoperative pain relief. The Visual Analog Pain Scale was used to evaluate the postoperative pain. The quantity of morphine consumed within 24 h was also recorded. The data collected from the study were analyzed using IBM SPSS version 23.0. Results: The pain score measured in the postanesthesia care unit and at 1, 2, and 4 h after surgery was significantly lower in Group A when compared to Group B, with P &lt; 0.05. There were no significant differences observed in the Visual Analog Scale scores at 12 and 24 h postsurgery between the two groups, with P &gt; 0.05. The amount of morphine consumed in the 24 h following surgery was found to be significantly lower in Group A when compared to Group B. This difference was statistically significant, with P &lt; 0.001. Conclusion: Intraoperative SHPB block after abdominal hysterectomy provides effective postoperative analgesia and reduces postoperative morphine consumption compared to placebo, with fewer incidences of opioid adverse effects.

Pilot Study on Feasibility and Outcome of a Nerve-Preserving Aortoiliac Exposure Technique

Dysfunctional ejaculation is a common complication following open aortoiliac aneurysm surgery. It may occur in 49-63% of patients and is caused by iatrogenic damage to the sympathetic lumbar splanchnic nerves (LHN) and superior hypogastric plexus (SHP). A nerve-preserving operative technique based on a unilateral right-sided approach to the abdominal aorta, was implemented in clinical practice. The aim of this pilot study was to establish the safety and feasibility of the technique, and whether a sympathetic pathway and ejaculatory function was preserved.u METHODS: Patients were asked to fill out questionnaires preoperatively, and 6 weeks, 6 months and 9 months postoperatively. The International Index of Erectile Function (IIEF), Cleveland Clinic Incontinence Score (CCIS), Pac-Sym and ICIQ-Mluts were used. Surgeons were asked to complete a technical feasibility questionnaire. Twenty-four patients undergoing aortoiliac aneurysm surgery were included. The nerve-sparing phase of the procedure added an average of 5-10 minutes of operating time and was technically feasible in twenty-two patients. No major complications occurred during nerve-sparing exposure. Fifteen of twenty-four patients were sexually active at some point throughout the study. No postoperative loss of ejaculation was seen in sexually active patients. CCIS, Pac-sym, IIEF and ICIQ-Mluts scores remained similar throughout the study. Nerve-preserving aortoiliac reconstruction surgery is safe and feasible. Ejaculatory function is preserved. Given the low number of patients in the study, further research is needed to provide robust data.

Anatomy of the lower hypogastric plexus applied to endometriosis: a narrative review.

The objective of the present study is to evaluate the anatomy of the inferior hypogastric plexus, correlating it with urological pathologies, imaging exams and surgeries of the female pelvis, especially for treatment of endometriosis. We carried out a review about the anatomy of the inferior hypogastric plexus in the female pelvis. We analyzed papers published in the past 20 years in the databases of Pubmed, Embase and Scielo, and we included only papers in English and excluded case reports, editorials, and opinions of specialists. We also studied two human fixed female corpses and microsurgical dissection material with a stereoscopic magnifying glass with 2.5x magnification. Classical anatomical studies provide few details of the morphology of the inferior hypogastric plexus (IHP) or the location and nature of the associated nerves. The fusion of pelvic splanchnic nerves, sacral splanchnic nerves, and superior hypogastric plexus together with visceral afferent fibers form the IHP. The surgeon's precise knowledge of the anatomical relationship between the hypogastric nerve and the uterosacral ligament is essential to reduce the risk of complications and postoperative morbidity of patients surgically treated for deep infiltrative endometriosis involving the uterosacral ligament. Accurate knowledge of the innervation of the female pelvis is of fundamental importance for prevention of possible injuries and voiding dysfunctions as well as the evacuation mechanism in the postoperative period. Imaging exams such as nuclear magnetic resonance are interesting tools for more accurate visualization of the distribution of the hypogastric plexus in the female pelvis.

ID: 206101 Acute Local Anesthetic Systemic Toxicity From Hypogastric Nerve Block for Chronic Pelvic Pain

Chronic pelvic pain (CPP) poses significant diagnostic and treatment challenges. One potential intervention is superior hypogastric nerve block for management of sympathetically-mediated pelvic pain. The hypogastric nerve supplies several sympathetic pain pathways of pelvic organs and has demonstrated use in conditions including post-operative, fibroid, and endometriosis-related CPP. Peripheral blocks of the hypogastric plexus under fluoroscopy serve as both diagnostic and therapeutic interventions for some patients managing CPP. However, complications such as local anesthetic systemic toxicity can occur.

Ultrasound versus Fluoroscopic-Guided Superior Hypogastric Plexus Block in Cancer Bladder: A Randomized Controlled Trial

BACKGROUND: Patients with advanced bladder cancer may suffer severe pelvic pain unresponsive to standard pharmacological therapy. AIM: This study assessed the feasibility, efficacy of ultrasoundguided (USG) versus fluoroscopy-guided (FG) superior hypogastric plexus block (SHPB) in bladder cancer pain management. METHODS: This randomized controlled study included 60 patients undergoing SHPB to manage pain in stages 3 and 4 bladder cancer patients from December 2020 to June 2021. They were randomly divided into two groups. Group Fluoro (n = 30) underwent FG-SHPB, while Group US (n = 30) underwent US-SHPB. The patients were assessed after 1 day and 1 and 3 months regarding pain intensity using visual analog score (VAS), daily morphine consumption, functional capacity, and quality of life (QoL) using the Short Form Health Survey-36. RESULTS: The procedure failed in 2 patients in each group. The procedure was significantly lengthier in the Fluor group than the US group (p &lt; 0.001). VAS scores decreased significantly in the two groups after 1 and 3 months and were significantly in US-SHBP after 3 months. Morphine consumption decreased significantly, and functional capacity and QoL improved significantly in both groups up to 3 months. The two groups were comparable in morphine consumption, functional capacity, and QoL. Position discomfort and back pain were more common in Fluor Group. CONCLUSION: USG SHPB is a feasible, safe, and effective analgesic procedure in patients with advanced bladder cancer suffering from severe pelvic pain. It is superior to the FG transdiscal approach regarding the duration of pain relief and improvement of functional capacity in addition to avoidance of position discomfort and back pain. REGISTRATION: Clinical Trials.gov (ID NCT05083702).

Analgesic Efficacy of Intraoperative Superior Hypogastric Plexus (SHP) Block during Abdominal Hysterectomy: A Systematic Review and Meta-Analysis of Controlled Trials.

Background and Objectives: Abdominal hysterectomy is a major surgery that is often associated with pronounced postsurgical pain. The objective of this research is to conduct a systematic review and meta-analysis of all randomized controlled trials (RCTs) and nonrandomized comparative trials (NCTs) that have surveyed the analgesic benefits and morbidity of intraoperative superior hypogastric plexus (SHP) block (intervention) compared with no SHP block (control) during abdominal hysterectomy. Materials and Methods: The Cochrane Central Register of Controlled Trials (CENTRAL), Google Scholar, Web of Science, PubMed, Scopus, and Embase were searched from inception until 8 May 2022. The Cochrane Collaboration tool and Newcastle-Ottawa Scale were used to evaluate the risk of bias of RCTs and NCTs, respectively. In a random effects mode, the data were pooled as risk ratio (RR) or mean difference (MD) with 95% confidence interval (CI). Results: Five studies (four RCTs and one NCT) comprising 210 patients (SHP block = 107 and control = 103) were analyzed. The overall postsurgical pain score (n = 5 studies, MD = -1.08, 95% CI [-1.41, -0.75], p < 0.001), postsurgical opioid consumption (n = 4 studies, MD = -18.90 morphine milligram equivalent, 95% CI, [-22.19, -15.61], p < 0.001), and mean time to mobilization (n = 2 studies, MD = -1.33 h, 95% CI [-1.98, -0.68], p < 0.001) were significantly decreased in the SHP block group contrasted with the control arm. Nevertheless, there was no significant variance between both arms regarding operation time, intraoperative blood loss, postsurgical NSAID consumption, and hospital stay. There were no major side effects or sympathetic block-related aftermaths in both groups. Conclusions: During abdominal hysterectomy and receiving perioperative multimodal analgesia, the administration of intraoperative SHP block is largely safe and exhibits better analgesic effects compared to cases without administration of SHP block.

Nerve-sparing technique in RPLND for testicular cancer.

The management of testicular cancer has evolved over time with multimodal therapy. Retroperitoneal lymph node dissection (RPLND), which is a complex and potentially morbid treatment option, remains the mainstay in surgical treatment. This article reviews the surgical template, approach and anatomical considerations with regards to nerve spare in RPLND. The standard full bilateral RPLND template has evolved over time to include the area between the renal hilum, bifurcation of the common iliac vessels, and the ureters. Morbidity with regards to ejaculatory dysfunction has led to further refinements in this procedure. Advancements in anatomical understanding of the retroperitoneal structures and their relationship to the sympathetic chain and hypogastric plexus has allowed for modification of surgical templates. Further refinements in surgical nerve sparing techniques have improved functional outcomes without sacrificing oncological outcomes. Finally, extraperitoneal access to the retroperitoneum and minimally invasive platforms have been implemented to further reduce morbidity. RPLND requires strict adherence to oncological surgical principles regardless of template, approach and technique. Contemporary evidence shows that outcomes are best for advanced testis cancer patients when managed at high volume tertiary care facilities with surgical expertise and access to multidisciplinary care.

Characterizing the innervation of the vulvar vestibule and the immunohistochemical features of neuroproliferative vestibulodynia.

Provoked vestibulodynia (PVD) is a chronic pain condition characterized by allodynia localized to the vulvar vestibule. The finding of increased densities of nerve fibers in the vestibular mucosa of patients with PVD has led to the identification of a neuroproliferative subtype. The etiology of PVD, including neuroproliferative vestibulodynia (NPV), is not fully understood. The gross and microscopic innervation of the vulvar vestibule remains incompletely described, despite the preliminary data supporting the role of peripheral innervation in PVD. To characterize the gross anatomic and microscopic innervation of the vulvar vestibule through cadaveric dissection and immunohistochemistry. The pudendal nerve and inferior hypogastric plexus (IHP) were dissected using 6 cadaveric donors. Histology and immunohistochemistry were used to confirm patterns of innervation identified gross anatomically. Immunohistochemistry was performed on vestibulectomy specimens obtained from 6 patients diagnosed with NPV and compared with cadaveric vestibular tissues. Outcomes included (1) dissection of pelvic innervation and (2) immunohistochemical localization of markers for the following: general innervation protein gene product 9.5 (PGP9.5), sensory innervation (calcitonin gene-related peptide), autonomic innervation (vasoactive intestinal polypeptide, tyrosine hydroxylase), neuroproliferation (nerve growth factor [NGF]), and immune activation (C-kit). Perineal (pudendal) nerve branches were traced to the external wall of the vulvar vestibule. Some anatomic heterogeneity was observed in perineal nerve-branching patterns. Fibers from the IHP were identified in close proximity to the vulvar vestibule. Autonomic and sensory nerve fibers were identified in both patient and cadaveric vulvar vestibule samples. Patient samples were characterized by the proliferation of PGP9.5-positive nerve fibers and C-kit-positive mast cells, which were in proximity to neve bundles and showed coexpression with putative NGF-positive cells. NGF expression was localized to a subset of nerves, including those that demonstrated co-expression of sensory and autonomic nerve markers. Increased densities of autonomic fibers positive for vasoactive intestinal polypeptide and tyrosine hydroxylase were observed in 1 patient sample. Heterogeneity in gross and microscopic patterns of innervation could explain variability in clinical response to treatment and should be used to inform future therapeutic interventions. This study used a combination of approaches to elucidate the innervation of the vulvar vestibule, including in NPV. The small sample size is a limitation. The vulvar vestibule contains both sensory and autonomic innervation, which may originate from the pudendal nerve and IHP. Our results support the existence of a neuroproliferative subtype that is characterized by the proliferation of sensory and autonomic nerve fibers and neuroimmune interactions.

Efficacy of Pudendal Nerve Blocks and Ultrasound-Guided Superior Hypogastric Plexus Blocks for the Management of Refractory Interstitial Cystitis: A Case Series

Interstitial cystitis/bladder pain syndrome (IC/BPS) is characterized by chronic pelvic, perineal, or bladder pain in addition to lower urinary tract symptoms. The etiology of this condition is not fully understood, which presents a challenge for effective therapeutic intervention. Current treatment guidelines recommend the use of multimodal pain management strategies including behavioral/non-pharmacologic, oral medications, bladder instillations, procedures, and major surgery. However, the safety and efficacy of these modalities vary, and there is currently no optimal treatment for the management of IC/BPS. The pudendal nerves and superior hypogastric plexus, which together mediate visceral pelvic pain and bladder control, are not addressed in the current guidelines but may serve as a therapeutic target. Here, we report improvements in pain, urinary symptoms, and functionality following bilateral pudendal nerve blocks and/or ultrasound-guided superior hypogastric plexus blocks in three patients with refractory IC/BPS. Our findings provide support for the use of these interventions in patients with IC/BPS unresponsive to prior conservative management.

Is routine intravenous access commonly established before interventional pain procedures? Results of a spine intervention society practice pattern survey

Summary of background dataEstablishing routine intravenous (IV) access prior to interventional pain procedures performed without sedation is controversial. Anecdotally, practices very in terms of their use of routine IV access. ObjectivesTo determine the frequency with which routine IV access is obtained for various common interventional pain procedures among interventional pain providers. MethodsAn anonymous survey was distributed to physician members of the Spine Intervention Society (SIS) on 08/13/2020, and remained open until 10/13/2020. Respondents provided information regarding demographics and current practice patterns. Results141 SIS members completed the survey. A bimodal distribution was noted for most procedures, with most providers obtaining routine IV access either 0% of the time or 81–100% of the time. Routine IV access was used more frequently when performing cervical spine procedures, splanchnic or hypogastric plexus blocks, lumbar sympathetic blocks, and spinal cord stimulator trials. Excluding cases where IV's were used for sedation, the only procedures which providers obtained routine IV access more often than not were spinal cord stimulator trials, splanchnic/celiac plexus blocks, and hypogastric plexus blocks. Over half (52.5%) of respondents reported using an IV for an emergent situation in their career. While most providers would not modify their IV usage based on practice location, those that would were significantly more likely to decrease IV use if working in clinic-based procedures suites (n ​= ​25) compared to hospital-based surgical centers (n ​= ​2) or ambulatory surgical centers (n ​= ​9, p ​< ​0.001). Discussions/conclusionsThere remains wide variation among practitioners in establishing routine intravenous access prior to interventional procedures. Most providers surveyed do not routinely establish IV access for the majority of interventional pain procedures. Routine IV access is more commonly obtained for cervical spine procedures than other spinal regions. Overall, complications precipitating the need for IV use are rare in interventional spine but likely to happen over the course of a career.

Deep-learning-based semantic segmentation of autonomic nerves from laparoscopic images of colorectal surgery: an experimental pilot study.

The preservation of autonomic nerves is the most important factor in maintaining genitourinary function in colorectal surgery; however, these nerves are not clearly recognisable, and their identification is strongly affected by surgical ability. Therefore, this study aimed to develop a deep learning model for the semantic segmentation of autonomic nerves during laparoscopic colorectal surgery and to experimentally verify the model through intraoperative use and pathological examination. The annotation dataset comprised videos of laparoscopic colorectal surgery. The images of the hypogastric nerve (HGN) and superior hypogastric plexus (SHP) were manually annotated under a surgeon's supervision. The Dice coefficient was used to quantify the model performance after fivefold cross-validation. The model was used in actual surgeries to compare the recognition timing of the model with that of surgeons, and pathological examination was performed to confirm whether the samples labelled by the model from the colorectal branches of the HGN and SHP were nerves. The dataset comprised 12,978 video frames of the HGN from 245 videos and 5198 frames of the SHP from 44 videos. The mean (±standard deviation) Dice coefficients of the HGN and SHP were 0.56 (±0.03) and 0.49 (±0.07), respectively. The proposed model was used in 12 surgeries, and it recognised the right HGN earlier than the surgeons did in 50.0% of the cases, the left HGN earlier in 41.7% of the cases and the SHP earlier in 50.0% of the cases. Pathological examination confirmed that all 11 samples were nerve tissue. An approach for the deep learning-based semantic segmentation of autonomic nerves was developed and experimentally validated. This model may facilitate intraoperative recognition during laparoscopic colorectal surgery.

Superior Hypogastric Plexus Block for Malignancy Related Pelvic Pain - Retrospective Study in Tertiary Cancer Hospital

Superior Hypogastric Plexus Block for Malignancy Related Pelvic Pain - Retrospective Study in Tertiary Cancer Hospital

Anatomical location of the surgically identifiable bladder branch of the inferior hypogastric plexus for nerve-sparing radical hysterectomy

ObjectiveWe aimed to demonstrate the entire structure of the inferior hypogastric plexus in the female pelvis focusing on surgically identifiable nerve bundles to the urinary bladder. MethodsSurgical videos of transabdominal nerve-sparing radical hysterectomy for 10 patients with cervical cancer at International Federation of Gynecology and Obstetrics (FIGO 2009) stage IB1–IIB were retrospectively analyzed. The paracervical tissue dorsal to the ureter was separated into the lateral component (dorsal layer of the vesicouterine ligament) and medial component (paracolpium) using Okabayashi’s technique. Any bundle-like structures in the paracervical area were isolated and divided using cold scissors, and each cut edge was inspected to determine whether the bundle was a blood vessel or a nerve. ResultsIn all cases, the surgically identifiable nerve bundle of the bladder branch was identified on the rectovaginal ligament running parallel and dorsal to the vaginal vein of the paracolpium. The bladder branch was revealed only after complete division of the vesical veins in the dorsal layer of the vesicouterine ligament where no definitive nerve bundles were observed. The bladder branch was derived laterally from the pelvic splanchnic nerve and medially from the inferior hypogastric plexus. ConclusionsThe surgical identification of the nerve bundle of the bladder branch is essential for a safe and secure nerve-sparing radical hysterectomy. The preservation of the surgically identifiable bladder branch from the pelvic splanchnic nerve as well as from the inferior hypogastric plexus can provide satisfactory postoperative voiding function.

A Case of Refractory Intractable Bladder Pain Syndrome Treated with Superior Hypogastric Nerve Chemical Neurolysis

Bladder pain syndrome (BPS) is a severely debilitating condition. BPS is a symptom complex affecting the urinary bladder, which is characterized by pelvic pain, urinary urgency, frequency, and nocturia. In this case report, we have presented a patient with BPS who was not responsive to conventional treatment and was managed successfully by diagnostic superior hypogastric plexus block followed by alcohol neurolysis.

Morphological Peculiarities of the Pelvic Autonomic Nervous System and Their Impact on Clinical Interventions in the Lesser Pelvic Region.

Background: The aim of the work is to define the morphological peculiarities of the pelvic autonomic nervous system (ANS) and their importance in the clinical and surgical interventions in the lesser pelvis. Material and methods: Anatomical variations in the formation of the pelvic ANS were observed in 20 cadavers. The study included 17 men (85%), aged 18 to 84, and 3 women, aged 27 to 86. The average age was 53.8 years. The subjects most often died by violent death in car accidents, by asphyxia, or by sudden death. The study was approved by the Ethics Committee of the Health Care Surveillance Authority, Bratislava, Slovakia. We studied cadavers without congenital or detected anomalies, cancer, deformities of the body, or spinal or abdominal surgeries within 24 h of death. We observed a relationship between the dimensions and the number of ganglia, as well as the number and course of nerve branches and anastomoses. In the pelvic area, we observed the hypogastric plexus superior, hypogastric plexus inferior, and the truncus sympathicus. In all cadavers, we clarified the lumbosacral plexuses after evisceration. In the lumbosacral region, the roots were defined based on their participation in the formation of the plexuses. To show the intimate relationship between both systems, we also focused on the details of the structure (rami communicantes) related to the connections of the ANS with the spinal nervous system. Results: Anatomical variations in the formation of the pelvic ANS were observed in all cases. We included cases with more than two truncus sympathicus ganglia as the segmental type. The segmental form occurred in 14 (70%) cases, and was concentrated in 6 (30%) cases. Rami communicantes provided anastomoses to the spinal nerves. Small ganglia were observed on the rami communicantes. With the concentrated type, we observed the division of the sympathetic and parasympathetic systems. With the segmental and concentrated forms, symptoms of the "diffuse form" may occur, which we observed in all cases. We observed significant right-left asymmetry and differences in the formation of ganglia and anastomoses. Conclusions: This study allowed us to identify and describe the morphological peculiarities of the pelvic ANS and their possible influence on the clinical picture. Asymmetry and dependence of their occurrence on the type of ANS was observed. The variations were frequent. Their preoperative diagnosis is difficult to impossible. The absence or lack of intraoperative vigilance can lead to the damage of pelvic ANS during operations and blockades of the pelvic plexus. The acquired knowledge can be helpful in clarifying clinical signs and symptoms of these conditions.

Fluoroscopic anterior approach versus ultrasound guided superior hypogastric plexus neurolysis in cancer pelvic pain: a randomized controlled study

BackgroundCancer-related pelvic pain can be difficult and debilitating to treat. Superior hypogastric plexus neurolysis (SHPN) is a good choice for adequate pain relief with fewer side effects. The current study compared between fluoroscopic anterior approach and ultrasound guided SHPN in the management of cancer-related pelvic pain.MethodsPatients were randomly allocated into two equal groups. The ultrasound group (US group) (n = 48) received SHPN by an ultrasound-guided anterior approach using 3 ml 5% bupivacaine plus 20 ml 10% phenol, while the fluoroscopy group (n = 48) received SHPN by a fluoroscopy-guided anterior approach using 3 ml 5% bupivacaine plus 20 ml 10% phenol.ResultsThe time of the procedure was shorter in the fluoroscopic group (21.31 ± 4.79 min) than the US group (24.88 ± 6.02 min) (P = 0.002). Patient satisfaction was higher in the fluoroscopy group (5.38 ± 1.482) than the US group (2.98 ± 1.495) (P˂0.001). The need for analgesia using morphine was significantly limited in each group, at 1, 2 and 3 months intervals (P1˂0.001, P2 ˂0.001 and P3 ˂0.001). There were statistically significant differences between both groups regarding fatigue at baseline, drowsiness at 3 months, nausea and vomiting at 1, 2 and 3 months and anorexia at 3 months. Group comparison also revealed statistically significant differences regarding depression at one month, anxiety at 2 and 3 months and insomnia at baseline.ConclusionThe fluoroscopic anterior approach SHPN was more superior than the US guided SHPN regarding the time of the procedure and patient satisfaction, while both technique were similar regarding the numeric rating scale and the complications during block.Trial registrationRegistered in the ClinicalTrials.gov (Identifier: NCT05299047) at 28/03/2022.