Randomised Controlled Trial to Evaluate the Efficacy of Local Anaesthetic Application in Spray for the Repair of 1st- 2nd Perineal Lacerations Following Vaginal Delivery

Azienda Sanitaria-Universitaria Integrata di Udine1 site in 1 country136 target enrollmentStarted: January 20, 2022Last updated: September 21, 2023

Conditions

Interventions

Drugs

Trial Snapshot

Phase: Phase 3
Status: Completed
Sponsor: Azienda Sanitaria-Universitaria Integrata di Udine
Enrollment: 136
Locations: 1
Primary Endpoint: NRS o

Study Overview Study Design Eligibility Criteria Arms & Interventions Outcomes Investigators Sites Records & Identifiers Similar Trials

Study Overview

Brief Summary

Randomized controlled trial aimed at evaluating the efficacy and safety of the use of a local anesthetic spray, commonly used in clinical practice as off-label, during the suturing of perineal lacerations in post-partum, comparing it with the standard technique that involves the infiltration of lacerated tissues, by administering a NRS card at the end of the procedure.

Detailed Description

The study aims to compare the effectiveness of pain treatment during the suturing of postpartum perineal lacerations with lidocaine spray vs skin infiltration. The hypothesis of the study is that the treatment of perineal pain with nebulization demonstrates comparable efficacy vs the infiltration of mepivacaine hydrochloride in a population of patients subjected to suturing of postpartum lacerations. Eligible women will be randomly assigned to receive, after wound disinfection and cleansing of bleeding with mild haemostasis:

nebulization 3 puffs of 10 mL Lidocaine hydrochloride 10% spray at a distance of 4-5 cm (experimental group).
subcutaneous / submucosal infiltration depending on the type of perineal laceration of 10 ml of 1% mepivacaine hydrochloride (control group).

Since there are no previous published studies, regarding the use of nebulized lidocaine hydrochloride for the suturing of perineal lacerations, the number of puffs chosen was chosen based on what is indicated on the technical data sheet of lidocaine hydrochloride and making use of previous studies in the gynecological field, but with other indications.

The suture will be made once anesthetic efficacy is achieved, as per pharmacological indications. The administration of the anesthetic and the suturing of the lacerations will be performed by the gynecologist or by the gynecology resident who will be working at that time in the delivery room, as is routinely done in our Clinic. The patients will be enrolled consecutively following the order generated by the randomization list itself. By filling in specific pre-set cards, the data will be collected.

Initially, the primary outcome was NRS at the beginning of suturing and NRS at the end of the procedure. In a second moment, the investigators thought it would be better to ensure that adequate analgesia (NRS<4) was achieved for all patients during suturing, rather than varying the dosage of the anesthetic itself. The investigators then decided to reassess pain at successive time points, evaluating it at 0, 2, 4, 12, and 24 hours.

Study Design

Study Type: Interventional
Allocation: Randomized
Intervention Model: Parallel
Primary Purpose: Treatment
Masking: None

Masking Description

Open label: due to the different methods of administration, the blindness of the obstetrician-gynecological team cannot be guaranteed.

Eligibility Criteria

Ages: 18 Years to — (Adult, Older Adult)
Sex: Female
Accepts Healthy Volunteers: Yes

Inclusion Criteria

•have a 1st or 2nd degree postpartum perineal laceration requiring suturing;
•have reached 37 gestational weeks;
•are over 18 years of age;
•had a top birth;
•are able to understand the Italian language;
•have a consent to participate in the study;

Exclusion Criteria

•have received epidural anesthesia within 2 hours prior to delivery;
•had an operative birth;
•have a psychiatric pathology;
•have had a twin birth;
•have experienced adverse reactions to any local anesthetic in the past;
•hypersensitivity to the active substance or to any of the excipients
•Severe disturbances of the cardiac conduction system
•Acute non compensated heart failure
•Severe arteriopathies
•Severe uncontrolled hypertension
•Intravascular injections
•Septicemia Dysfunction
•Infection at the injection site
•Kidney failure. Providing for the exclusion of patients with severe renal impairment (estimated GFR <30 mL / min / 1.73 m2 at the time of screening).
•Advanced liver dysfunction
•Hyperthyroidism
•Acute angle glaucoma
•Participation in a clinical trial in which an investigational drug was administered within 30 days of screening or 5 half-lives of the study drug
•Any clinical condition that in the investigator's judgment would render the patient unsuitable for the study including, but not limited to, infectious, inflammatory, psychiatric, neurological, cardiological, renal, hepatic, respiratory, diabetes) conditions or laboratory value at clinically meaningful screening that, an investigator's opinion, may present a safety risk, interface with study compliance and follow-up;
•have had in pregnancy liver disease including pre-eclampsia.

Arms & Interventions

lidocaine spray

Experimental

nebulization 3 puffs of 10 mL Lidocaine hydrochloride 10% spray at a distance of 4-5 cm

Intervention: Lidocaine Hydrochloride (Drug)

mepivacaine infiltration

Active Comparator

subcutaneous / submucosal infiltration depending on the type of perineal tear of 10 ml of 1% mepivacaine hydrochloride

Intervention: Mepivacaine Injection (Drug)