The Effect of Intravenous Lidocaine on Pain After Thyroidectomy

Overview

This prospective randomized study aims to evaluate the effectiveness of intravenous lidocaine injection on the relief of pain in patients undergoing thyroidectomy. A total 56 patients will be randomized into one of two groups(group C or group I) based on Excel number generation. Patients in group C will receive normal saline intravenous injection, and patients in group I will receive an intravenous bolus injection of 1.5mg/kg lidocaine followed by a continuous lidocaine infusion of 2mg/kg/hr. Visual analogue scale pain scores, fentanyl consumption, the frequency at which patients pushed the button(FPB) of a patient-controlled analgesia system, and presence or absence of nausea and vomiting will be recorded at 2,4,8,12,24,48 hours postoperatively.

Full Title of Study: “Intravenous Lidocaine for Effective Pain Relief After Thyroidectomy: a Prospective, Randomized, Double-blind, Placebo-controlled Study”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Double (Participant, Outcomes Assessor)
  • Study Primary Completion Date: December 2014

Interventions

  • Drug: Intravenous lidocaine injection
    • Patients in Group I (intravenous lidocaine injection group) received an intravenous bolus injection of 1.5 mg/kg lidocaine followed by a continuous lidocaine infusion of 2 mg/kg/hr.
  • Drug: Intravenous normal saline injection
    • The patients in Group C (placebo control group) received normal saline intravenous injection

Arms, Groups and Cohorts

  • Active Comparator: Intravenous lidocaine injection group
    • Patients in Group I (intravenous lidocaine injection group) received an intravenous bolus injection of 1.5 mg/kg lidocaine followed by a continuous lidocaine infusion of 2 mg/kg/hr.
  • Placebo Comparator: Placebo control group
    • Patients in Group C (placebo control group) received normal saline intravenous injection

Clinical Trial Outcome Measures

Primary Measures

  • Postoperative pain measured using Visual analogue scale at postoperative 2hour
    • Time Frame: post op 2hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 2hour.

Secondary Measures

  • visual analogue scale 4hour
    • Time Frame: post op 4 hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 4hour.
  • visual analogue scale 8 hour
    • Time Frame: Post op 8 hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 8hour.
  • Visual analogue scale 12hour
    • Time Frame: Post op 12 hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 12hour.
  • visual analogue scale 24hour
    • Time Frame: Post op 24 hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 24hour.
  • visual analogue scale 48 hour
    • Time Frame: Post op 48hour
    • Patients will be assessed for pain using a visual analogue pain scale(VAS). It is usually a horizontal line, 100mm in length, anchored by word descriptors at each end; left side end which represents 0 is ‘No pain’, right side end with 100 is ‘Very severe pain’. The patient marks ont the line the that they feel represents their perception of their current state. The VAS score is determined by measuring in millimeters from the left hand end of the line to the point that the patient marks. To check the severity of pain VAS will be measured at post op 48hour.
  • Opioid consumption 2hour
    • Time Frame: post op 2hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 2hour will be measured.
  • Opioid consumption 4 hour
    • Time Frame: Post op 4 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 4hour will be measured
  • Opioid consumption 8hour
    • Time Frame: Post op 8 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 8hour will be measured
  • Opioid consumption 12 hour
    • Time Frame: Post op 12 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 12hour will be measured
  • Opioid consumption 24 hour
    • Time Frame: Post op 24 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 24hour will be measured
  • Opioid consumption 48 hour
    • Time Frame: Post op 48 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occured. In the case of persistent pain greater than a visual analogue scale(VAS) pain score of 30mm, and additional 50㎍ of fentanyl will be injected intra-venously by nursing staff until the pain was relieved to a level less than a VAS pain score of 30mm. And sum of delivery from PCA system and and additional opioid fom immediately after operation to post op 48hour will be measured
  • FPB 2hour
    • Time Frame: Post op 2 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 2 hour will be measured.
  • FPB 4hour
    • Time Frame: Post op 4 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 4 hour will be measured.
  • FPB 8 hour
    • Time Frame: Post op 8 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 8 hour will be measured.
  • FPB 12 hour
    • Time Frame: Post op 12 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 12 hour will be measured.
  • FPB 24hour
    • Time Frame: Post op 24hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 24 hour will be measured.
  • FPB 48 hour
    • Time Frame: Post op 48 hour
    • The patients will be taught to push the button of the PCA system, which delivered a bolus of drug, each time pain occurred. And total frequency of patient to push the button of the PCA machine (FPB) fom immediately after operation to post op 48 hour will be measured.

Participating in This Clinical Trial

Inclusion Criteria

  • Total thyroidectomy Exclusion Criteria:

  • mental change – allergy to local anesthetics

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 65 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Chung-Ang University Hosptial, Chung-Ang University College of Medicine
  • Provider of Information About this Clinical Study
    • Principal Investigator: Hyun Kang, Assistant professor – Chung-Ang University Hosptial, Chung-Ang University College of Medicine
  • Overall Official(s)
    • Hyun Kang, Ph.D, Study Chair, Chung-Ang University Hosptial, Chung-Ang University College of Medicine
    • Eun Jin Ahn, Principal Investigator, Chung-Ang University Hosptial, Chung-Ang University College of Medicine
  • Overall Contact(s)
    • Hyun Kang, Ph.D, 82-2-6299-2571, roman00@naver.com

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