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Lidocaine Patch vs Intradermal Lidocaine for Epidural Needle Insertion Pain

13. juli 2026 opdateret af: Ling-Qun Hu, Ohio State University

Prospective, Single-Center, Randomized, Double-Blind Clinical Trial Evaluating Pain During Epidural Tuohy Needle Insertion After 4% Lidocaine Patch or Intradermal Lidocaine Injection in Parturient Women Requesting Epidural Analgesia

Needle phobia is a barrier for receiving appropriate care during pregnancy and can lead to complications of the mother and fetus that could easily be avoided. Needle phobia can affect routine prenatal care, increase the demand for general anesthesia during c-section, and increase post-op pain. During epidural placement, providers use local anesthetic in various methods to numb the area where the needle will be inserted. Pain from these anesthetic administrations can increase needle phobia and their side effects.

One use of local anesthetic is the lidocaine patch, and studies have shown it is effective in reducing pain level in patients [6, Firmani]. The transdermal lidocaine patch may lower the physical pain and mental effects of needle phobia in pregnant women and lower the side effects from that. Although lidocaine patch may take more time to numb the skin, a high number of expecting mothers will not require an epidural for labor analgesia right away. Therefore, administration of lidocaine patch might be an effective alternative.

Pregnant women needing epidural placement will be randomized into three groups, the lidocaine patch group, intradermal anesthetic group, or use of both to determine the effectiveness of the lidocaine patch compared to the intradermal administration.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Needle phobia is a significant barrier to receiving medical care and may negatively affect prenatal care, obstetric outcomes, and patient experience. During epidural placement for labor analgesia, local anesthetic is commonly administered through intradermal injection to reduce pain from Tuohy needle insertion. However, the injection itself may cause pain and increase anxiety, particularly in patients with needle phobia.

Transdermal lidocaine patches provide a needle-free method of local anesthesia and have demonstrated effectiveness in reducing procedural pain in other clinical settings. This approach may decrease pain and anxiety associated with epidural placement while improving patient comfort.

This prospective, randomized, single-blinded pilot study will compare the effectiveness of a 4% lidocaine patch with standard intradermal lidocaine infiltration for reducing pain during epidural Tuohy needle insertion in laboring patients. Participants will be randomized into three groups: intradermal lidocaine alone, lidocaine patch alone, or combined lidocaine patch and intradermal lidocaine. Outcomes will include procedural pain response, vocalization and withdrawal reflex, patient-reported pain scores, hemodynamic changes, and patient satisfaction.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

135

Fase

  • Fase 2

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Forenede Stater
    • Ohio
      • Columbus, Ohio, Forenede Stater, 43201
        • Rekruttering
        • The Ohio State University Wexner Medical Center Hospitals
        • Kontakt:
        • Kontakt:
          • Ling-Qun Hu

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

Age 18 years or older Parturient women requesting neuraxial anesthesia/analgesia (epidural or combined spinal-epidural) for vaginal or cesarean delivery Ability to provide informed consent in English

Exclusion Criteria:

Less than 30 minutes of lidocaine patch placement prior to epidural placement Administration of opioids within 4 hours before study enrollment Intravenous magnesium sulfate administration within the previous 24 hours Diabetes mellitus (Type 1 or Type 2) Neurocardiogenic signs or symptoms (e.g., dizziness, lightheadedness, bradycardia, or syncope) during intravenous cannulation Cervical dilation greater than 6 cm (if in labor) Spinal anesthesia Chronic pain condition Opioid use disorder Intrauterine fetal demise Prisoner status

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Lidocaine Patch Group
Participants will receive a 4% lidocaine transdermal patch applied to the L3-L5 lumbar region at least 30 minutes prior to epidural placement. The patch will remain in place for a minimum of 30 minutes and then be removed immediately prior to the epidural procedure. No intradermal local anesthetic injection will be administered in this group.
Medicin: Lidocaine patch 4%
4% lidocaine transdermal patch applied to the L3-L5 lumbar region at least 30 minutes prior to epidural placement. The patch remains in place for a minimum of 30 minutes and is removed immediately prior to epidural needle insertion.
Andre navne:
  • 4% Lidocaine Transdermal Patch Topical Lidocaine Patch
Eksperimentel: Intradermal Lidocaine Injection Group
Immediately prior to epidural placement, participants will receive a single intradermal injection of 1% lidocaine administered using a 27-gauge needle over approximately 3 seconds at the intended epidural insertion site (L3-L5). Epidural placement will proceed immediately afterward per standard clinical practice. No transdermal lidocaine patch will be used in this group.
Medicin: Lidocaine patch 4%
4% lidocaine transdermal patch applied to the L3-L5 lumbar region at least 30 minutes prior to epidural placement. The patch remains in place for a minimum of 30 minutes and is removed immediately prior to epidural needle insertion.
Andre navne:
  • 4% Lidocaine Transdermal Patch Topical Lidocaine Patch
Placebo komparator: Placebo Control Group
Participants will receive a placebo transdermal patch applied to the L3-L5 lumbar region for at least 30 minutes prior to epidural placement, followed by a saline intradermal injection (or sham injection depending on blinding design) at the epidural insertion site using a 27-gauge needle over approximately 3 seconds. Epidural placement will then proceed per routine clinical practice.
Medicin: Lidocaine patch 4%
4% lidocaine transdermal patch applied to the L3-L5 lumbar region at least 30 minutes prior to epidural placement. The patch remains in place for a minimum of 30 minutes and is removed immediately prior to epidural needle insertion.
Andre navne:
  • 4% Lidocaine Transdermal Patch Topical Lidocaine Patch

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Composite Behavioral Pain Response During Tuohy Needle Insertion (CPOT-Based)
Tidsramme: During Tuohy needle insertion (immediately at time of epidural placement procedure)
The primary outcome is a composite behavioral pain response during epidural Tuohy needle insertion, defined as the presence and severity of vocalization and withdrawal reflex. This will be assessed using the Critical Care Pain Observation Tool (CPOT), which evaluates observable indicators of pain including facial expression, vocalization, body movement, and muscle tension. Higher CPOT scores indicate greater observed pain response during the procedure.
During Tuohy needle insertion (immediately at time of epidural placement procedure)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Patient-Reported Pain Score During Epidural Placement (NRS)
Tidsramme: Immediately after Tuohy needle insertion during epidural placement
Pain intensity reported by the participant during epidural needle insertion will be assessed using the 10-point Numerical Rating Scale (NRS), where 0 indicates no pain and 10 indicates worst possible pain.
Immediately after Tuohy needle insertion during epidural placement
Hemodynamic Response to Epidural Needle Insertion (Blood Pressure)
Tidsramme: Baseline (pre-insertion) and immediately following Tuohy needle insertion
Changes in blood pressure (BP) will be measured as physiological responses to Tuohy needle insertion. Values will be recorded immediately before and immediately after needle insertion.
Baseline (pre-insertion) and immediately following Tuohy needle insertion
Patient Satisfaction With Epidural Procedure
Tidsramme: At completion of epidural procedure (same visit, immediately after procedure ends)
Patient satisfaction with the epidural placement experience will be assessed using a 0-10 Likert scale, where 0 represents worst possible experience and 10 represents highest satisfaction.
At completion of epidural procedure (same visit, immediately after procedure ends)
Hemodynamic Response to Epidural Needle Insertion (Heart Rate)
Tidsramme: Baseline (pre-insertion) and immediately following Tuohy needle insertion
Changes in Heart Rate (HR) will be measured as physiological responses to Tuohy needle insertion. Values will be recorded immediately before and immediately after needle insertion.
Baseline (pre-insertion) and immediately following Tuohy needle insertion

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Ohio State University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

29. juni 2026

Primær færdiggørelse (Anslået)

31. januar 2029

Studieafslutning (Anslået)

31. januar 2029

Datoer for studieregistrering

Først indsendt

29. juni 2026

Først indsendt, der opfyldte QC-kriterier

8. juli 2026

Først opslået (Faktiske)

13. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

13. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2024H0309

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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