Clinical trial NCT06092541: Pericervical Analgesia Versus Analesia With Nitrous Oxide (N2O) in Outpatien Operative Hysteroscopy With Miniresector
Official title: Comparison of Efficacy Between Nitrous Oxide (n2o) Analgesia and Pericervical Analgesia in Outpatient Operative Hysteroscopy With Miniresector: a Randomized Clinical Pilot Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Hysteroscopy
Keywords: hysteroscopy
pain control
pericervical anesthesia
nitrous oxide
Lead sponsor: Ospedale degli Infermi di Biella
Sponsor class: OTHER
First posted: 2023-10-23
Enrollment: 50
Sex: FEMALE
Minimum age (years): 25
Maximum age (years): 50
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Single-blind, randomized clinical pilot study with masked third-party assessment. Patients will be assigned to the two groups (pericervical analgesia / nitrous oxide) through the sealed envelope method.
Primary purpose: TREATMENT

Brief summary: This research will have the aim of evaluating and comparing the effectiveness of two methods (analgesia with nitrous oxide and pericervical analgesia, excluding the use of paracervical block due to the increased risk of complications reported in the literature in the control of pain caused during Outpatient Operative Hysteroscopy maneuvers with Miniresector.

Detailed description: Pain is the primary cause of hysteroscopy failure. It can be attributed to multiple causes, such as manipulation of the cervical canal , uterine distention due to the liquid distension media used during the procedure , operating procedures on the endometrium (as a possible cause of uterine contraction) , until the release of prostaglandins following manipulation of the cervix and uterine distension.

There are few studies in the literature that have compared the various methods of pain control during the hysteroscopic examination. Among these, Ahmad et al., for example, compared the use of the paracervical block and inhalation anesthesia during hysteroscopy: although both proved to be effective in controlling pain, the paracervical block was associated with a greater number of complications. More recently, Solano et al. they defined how the administration of nitrous oxide was equally effective (but with many more advantages) to the paracervical block with 1% lidocaine in controlling pain during hysteroscopy performed using the Bettocchi hysteroscope.

However, for the purposes of this research it is important to take two aspects into consideration:

* all the studies in the literature that compared the various pain control methods during hysteroscopy were conducted using the Bettocchi Hysteroscope and not the Miniresector;
* more in detail, there are no studies comparing the use of nitrous oxide and pericervical analgesia during outpatient operative hysteroscopy with miniresector.

Objective This clinical trial will have the aim of evaluating and comparing the effectiveness of two methods (analgesia with nitrous oxide and pericervical analgesia, excluding the use of paracervical block due to the increased risk of complications reported in the literature1) in the control of pain caused during Outpatient Operative Hysteroscopy maneuvers with Miniresector.

Eligibility criteria: Inclusion Criteria:

* nulliparous or primiparous women (a previous Spontaneous Vaginal Birth -PS- or a previous Cesarean Section -TC- the latter comparable to nulliparous women as no previous cervical dilation -)
* age between 25 and 50 years

Exclusion Criteria:

* age \< 25 or \> 50 years
* multiparity
* positive history of previous operations on the cervical canal (e.g. conization)

Primary outcomes:
measure: Rate of pain, measured through the Visual Analog Scale 1 (no pain) to 10 (worse pain) using Pericervical Analgesia versus Analgesia with Nitrous Oxide in outpatient hysteroscopic surgery with Miniresector
timeFrame: 6 months
Secondary outcomes:
Other outcomes:
Locations:
city: Biella
country: Italy
facility: Ospedale degli Infermi
Study officials:
affiliation: Ospedale degli Infermi Biella
name: Bianca Masturzo, MD PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Dealberti D, Riboni F, Prigione S, Pisani C, Rovetta E, Montella F, Garuti G. New mini-resectoscope: analysis of preliminary quality results in outpatient hysteroscopic polypectomy. Arch Gynecol Obstet. 2013 Aug;288(2):349-53. doi: 10.1007/s00404-013-2754-7. Epub 2013 Feb 16.
citation: Ahmad G, Saluja S, O'Flynn H, Sorrentino A, Leach D, Watson A. Pain relief for outpatient hysteroscopy. Cochrane Database Syst Rev. 2017 Oct 5;(10)(10):CD007710. doi: 10.1002/14651858.CD007710.pub3.
citation: Meyer L, Moore J, McMillan L. Outpatient Hysteroscopy in the Management of Abnormal Vaginal Bleeding. J Am Assoc Gynecol Laparosc. 1996 Aug;3(4, Supplement):S30-1. doi: 10.1016/s1074-3804(96)80239-8.
citation: Zupi E, Luciano AA, Marconi D, Valli E, Patrizi G, Romanini C. The use of topical anesthesia in diagnostic hysteroscopy and endometrial biopsy. J Am Assoc Gynecol Laparosc. 1994 May;1(3):249-52. doi: 10.1016/s1074-3804(05)81018-7.
citation: Solano Calvo JA, Del Valle Rubido C, Rodriguez-Miguel A, de Abajo FJ, Delgado Espeja JJ, Gonzalez Hinojosa J, Fernandez Munoz L, Zapico Goni A. Nitrous oxide versus lidocaine versus no analgesic for in-office hysteroscopy: a randomised clinical trial. BJOG. 2021 Jul;128(8):1364-1372. doi: 10.1111/1471-0528.16657. Epub 2021 Mar 9.
citation: Del Valle Rubido C, Solano Calvo JA, Rodriguez Miguel A, Delgado Espeja JJ, Gonzalez Hinojosa J, Zapico Goni A. Inhalation analgesia with nitrous oxide versus other analgesic techniques in hysteroscopic polypectomy: a pilot study. J Minim Invasive Gynecol. 2015 May-Jun;22(4):595-600. doi: 10.1016/j.jmig.2015.01.005. Epub 2015 Jan 14.
citation: De Silva PM, Carnegy A, Graham C, Smith PP, Clark TJ. Conscious sedation for office hysteroscopy: A systematic review and meta-analysis. Eur J Obstet Gynecol Reprod Biol. 2021 Nov;266:89-98. doi: 10.1016/j.ejogrb.2021.09.001. Epub 2021 Sep 3.
citation: Vitale SG, Alonso Pacheco L, Haimovich S, Riemma G, De Angelis MC, Carugno J, Lasmar RB, Di Spiezio Sardo A. Pain management for in-office hysteroscopy. A practical decalogue for the operator. J Gynecol Obstet Hum Reprod. 2021 Jan;50(1):101976. doi: 10.1016/j.jogoh.2020.101976. Epub 2020 Nov 6.
citation: De Silva PM, Mahmud A, Smith PP, Clark TJ. Analgesia for Office Hysteroscopy: A Systematic Review and Meta-analysis. J Minim Invasive Gynecol. 2020 Jul-Aug;27(5):1034-1047. doi: 10.1016/j.jmig.2020.01.008. Epub 2020 Jan 23.
citation: Schneider EN, Riley R, Espey E, Mishra SI, Singh RH. Nitrous oxide for pain management during in-office hysteroscopic sterilization: a randomized controlled trial. Contraception. 2017 Mar;95(3):239-244. doi: 10.1016/j.contraception.2016.09.006. Epub 2016 Sep 9.
citation: Munro MG, Brooks PG. Use of local anesthesia for office diagnostic and operative hysteroscopy. J Minim Invasive Gynecol. 2010 Nov-Dec;17(6):709-18. doi: 10.1016/j.jmig.2010.07.009.
citation: Keyhan S, Munro MG. Office diagnostic and operative hysteroscopy using local anesthesia only: an analysis of patient reported pain and other procedural outcomes. J Minim Invasive Gynecol. 2014 Sep-Oct;21(5):791-8. doi: 10.1016/j.jmig.2014.03.006. Epub 2014 Mar 25.
citation: De Iaco P, Marabini A, Stefanetti M, Del Vecchio C, Bovicelli L. Acceptability and pain of outpatient hysteroscopy. J Am Assoc Gynecol Laparosc. 2000 Feb;7(1):71-5. doi: 10.1016/s1074-3804(00)80012-2.
citation: The Use of Hysteroscopy for the Diagnosis and Treatment of Intrauterine Pathology: ACOG Committee Opinion, Number 800. Obstet Gynecol. 2020 Mar;135(3):e138-e148. doi: 10.1097/AOG.0000000000003712.
citation: Ahlbom A. Modern Epidemiology, 4th edition. TL Lash, TJ VanderWeele, S Haneuse, KJ Rothman. Wolters Kluwer, 2021. Eur J Epidemiol. 2021 Aug;36(8):767-768. doi: 10.1007/s10654-021-00778-w. Epub 2021 Jul 3. No abstract available.