Trial reportInternational journal of colorectal disease2020
Ultrasound-guided pudendal nerve block in patients undergoing open hemorrhoidectomy: a double-blind randomized controlled trial.
Trial report in International journal of colorectal disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Pudendal Nerve Block in Patient Treated for Hemorrhoidectomy Under Spinal Anaesthesia: Prospective Randomized Double-blind Controlled Trial
The Effect of Pudendal Block on Postoperative Analgesia in Urogynecological Surgeries
Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.
- The role of pudendal nerve block in hemorrhoid surgery: a systematic review and meta-analysis of double-blind randomized controlled trials.Frontiers in medicine · 2023Pooled it
- Ultrasound-guidedBJA open · 2025Trial
- Ultrasound-guided pudendal nerve block for postoperative pain management in procedures for prolapse and hemorrhoids: a randomized, double-blinded trial.International journal of colorectal disease · 2025Trial
- The effect of combined pudendal nerve and spermatic cord block or caudal epidural block on postoperative analgesia after posterior urethroplasty: a randomized trial.BMC anesthesiology · 2024Trial
- Ultrasound-Guided Pudendal Nerve Block in Patients Undergoing Open Hemorrhoidectomy: A Post-Hoc Cost-Effectiveness Analysis from a Double-Blind Randomized Controlled Trial.ClinicoEconomics and outcomes research : CEOR · 2021Trial
- Spastic Pelvic Floor Syndrome Treated with Ultrasound-Guided Pudendal Nerve Block Combined with Wrist-Ankle Acupuncture: A Case Report.Chinese journal of integrative medicine · 2025Article
- Comparison of Pudendal Nerve Block and Spinal Anesthesia in Proctological Surgeries: Efficacy, Safety, and Patient Outcomes.Medicina (Kaunas, Lithuania) · 2024Observational
- The impact of combined administration of ropivacaine and dexamethasone on postoperative analgesia in perianal surgery with pudendal nerve block under ultrasound guidance: a prospective randomized controlled study.Frontiers in pharmacology · 2024Article
- PROSPECT guideline for haemorrhoid surgery: A systematic review and procedure-specific postoperative pain management recommendations.European journal of anaesthesiology and intensive care · 2023Article
- The efficacy of peripheral nerve block on postoperative catheter-related bladder discomfort in males: A systematic review and meta-analysis.Frontiers in surgery · 2023Review
- Ultrasound-Guided Pudendal Nerve Block Combined with Propofol Deep Sedation versus Spinal Anesthesia for Hemorrhoidectomy: A Prospective Randomized Study.Pain research & management · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIn this double-blind randomized trial, we aimed to compare the postoperative pain, complications, and length of hospital stay in patients undergoing open hemorrhoidectomy under spinal anesthesia with or without the pudendal nerve block.
methodsPatients undergoing Milligan-Morgan hemorrhoidectomy under spinal anesthesia were randomized to undergo a pudendal nerve block or no intervention. Postoperative pain on the visual analogue scale (VAS) at 6, 12, 24, and 48 h; opioid administration; and length of hospital stay were recorded and analyzed.
resultsOver the study period, 49 patients were included and 23 randomized in the treatment arm. No differences in terms of age, gender, and preoperative risk factors were noted between groups. The pain on the VAS at 6, 12, 24, and 48 h was 2.8 vs. 4.6 (p = 0.046), 3.4 vs. 4.7 (p = 0.697), 1.4 vs. 3.1 (p = 0.016), and 1.0 vs. 2.1 (p = 0.288) in the treatment and control groups respectively. No differences in opioids use or complications were noted. Length of hospital stay was 1.2 vs. 1.8 days respectively (p = 0.046). No complications directly associated to the pudendal nerve block were observed. Multivariate analysis revealed that the pudendal nerve block was an independent factor reducing the postoperative pain.
conclusionsThe ultrasound-guided pudendal nerve block in patients undergoing open hemorrhoidectomy under spinal anesthesia showed a statistically significant reduction in postoperative pain and length of hospital stay. The proposed technique appeared to be safe and feasible and may be recommendable in patients undergoing open hemorrhoidectomy.
trial registrationClinicalTrials.gov Identifier: NCT04251884.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.