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Clonidine in Femoral Nerve Block Surgery in Children

This study has been withdrawn prior to enrollment.
Information provided by:
Nationwide Children's Hospital Identifier:
First received: February 9, 2011
Last updated: May 6, 2015
Last verified: May 2015
Knee arthroscopy is a common surgical procedure in pediatrics in which the knee joint is visualized through a small camera to help diagnose and treat knee problems. This procedure is commonly accomplished with the use of general anesthesia. Regional anesthesia is commonly completed with a single injection of local anesthetic around the femoral nerve to provide pain relief for several hours following knee arthroscopy. The intent of this study is to examine the effects of clonidine in addition to local anesthetics for femoral nerve blockade in providing children and adolescents post-operative analgesia. The investigators hypothesize the addition of low dose clonidine (1 mcg/kg) provides an additional 4 hours of post operative analgesia following arthroscopic knee surgery and reduces post-operative opiate requirement.

Condition Intervention Phase
Other Reconstructive Surgery
Drug: Ropivacaine
Drug: Clonidine
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: The Effects of Clonidine on Postoperative Analgesia After Single Shot Femoral Nerve Block Following Arthroscopic Knee Surgery in Children

Resource links provided by NLM:

Further study details as provided by Nationwide Children's Hospital:

Primary Outcome Measures:
  • Pain [ Time Frame: 24 hours ]
    The primary end-point of the study is time from performance of femoral nerve block to onset of pain in the distribution of the femoral nerve.

Secondary Outcome Measures:
  • Heart rate [ Time Frame: 15, 30 & 60 mins. post-op ]
  • Blood pressure [ Time Frame: 15, 30 & 60 mins. post-op ]
  • Oxygen saturation [ Time Frame: 15, 30 & 60 mins. post-op ]

Enrollment: 0
Study Start Date: April 2011
Study Completion Date: March 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Ropivacaine plus clonidine
Ropivacaine plus clonidine for femoral block
Drug: Clonidine
clonidine 1 mcg/kg AND ropivacaine 0.2% 0.5 ml/kg (max 20 ml)
Active Comparator: Ropivacaine
Ropivacaine alone for femoral block
Drug: Ropivacaine
ropivacaine 0.2% 0.5 ml/kg (max 20 ml)


Ages Eligible for Study:   up to 21 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • American Society of Anesthesiologist (ASA) functional status I or II
  • Patients scheduled for arthroscopic knee surgery only

Exclusion Criteria:

  • Patients with history of chronic opioid therapy, central or peripheral neuropathy, contraindications to regional anesthesia, history of allergy to clonidine or ropivicaine, or anterior cruciate ligament reconstructive surgery in addition to knee arthroscopy
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Please refer to this study by its identifier: NCT01293149

United States, Ohio
Nationwide Children's Hospital
Columbus, Ohio, United States, 43205
Sponsors and Collaborators
Nationwide Children's Hospital
Principal Investigator: Amod Sawardekar, MD Nationwide Children's Hospital
  More Information

Responsible Party: Amod Sawardekar, MD/ Clinical Assistant Professor, Nationwide Children's Hospital Identifier: NCT01293149     History of Changes
Other Study ID Numbers: IRB11-00075
Study First Received: February 9, 2011
Last Updated: May 6, 2015

Keywords provided by Nationwide Children's Hospital:
knee, reconstructive surgery
femoral nerve block

Additional relevant MeSH terms:
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Antihypertensive Agents
Autonomic Agents
Adrenergic alpha-2 Receptor Agonists
Adrenergic alpha-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action processed this record on April 21, 2017