Home
Search
Study Topics
Glossary
|
|
|
|
|
|
Sponsored by: |
Children's Hospital of Eastern Ontario |
---|---|
Information provided by: | Children's Hospital of Eastern Ontario |
ClinicalTrials.gov Identifier: | NCT00130091 |
The current study will compare the effects on postoperative pain relief of “freezing” (ropivacaine 0.2 %) alone and in combination with clonidine for a nerve block in children undergoing hernia repair. The researchers anticipate that the addition of clonidine to “freezing” will result in prolongation of postoperative pain relief in children undergoing hernia repair compared to “freezing” used alone.
Condition | Intervention | Phase |
---|---|---|
Hernia, Inguinal Hydrocele |
Drug: clonidine |
Phase II |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Double-Blind, Placebo Control, Single Group Assignment, Safety/Efficacy Study |
Estimated Enrollment: | 128 |
Study Start Date: | September 2005 |
Estimated Study Completion Date: | September 2006 |
The optimal method of controlling postoperative pain in children undergoing hernia repair would effectively relieve pain for extended periods of time and have no adverse effects. Unfortunately, such an ideal technique does not exist.
The control of postoperative pediatric pain after hernia repair is achieved with a combination of oral and intravenous pain medications and “nerve blocks”. "Nerve blocks" are achieved by injecting local anesthetics or what is commonly referred to as "freezing "next to the nerve supply of the wound. “Freezing” the major nerves supplying sensation at the site of hernia repair in children, while they are asleep, is effective. At CHEO, this technique in addition to administering ketorolac, a liquid intravenous form of an anti-inflammatory agent similar to Advil, is the current technique of choice for postoperative pain control after inguinal hernia.
It is not unusual for these patients to require extra pain medications postoperatively. Available means of pain control in addition to those mentioned above include codeine-like medications, Tylenol, Advil-like medications and opioids administered intravenously. The addition of these medications increases the risk of suffering from side effects including respiratory depression, nausea and vomiting, and itching.
Ideally, the prolongation of postoperative pain relief by the addition of a second medication to the "freezing" during the nerve block would limit the need for additional pain medication and hence, decrease their associated side effects. Clonidine has the potential to be such a medication. It has been shown to provide pain relief by affecting several areas of the nervous system including the brain, the spinal cord and nerves. Clonidine prolongs pain relief of certain local anesthetics when used in nerve blocks for adults. Unfortunately, there are no studies that have examined the combination of clonidine and the local anesthetic ropivacaine for nerve blocks in children. Presently, the injectable form of clonidine is not marketed and is considered investigational in Canada.
The current study will be a prospective double -blind, randomized, controlled trial. It will compare the effects on postoperative pain relief of “freezing” (ropivacaine 0.2 %) alone and in combination with clonidine for a nerve block in children undergoing hernia repair. In addition, it will measure changes in the child’s level of sedation, breathing, heart rate, blood pressure and any complications. Finally, it will assess how satisfied the parents are with this technique.
The researchers anticipate that the addition of clonidine to “freezing” will result in prolongation of postoperative pain relief in children undergoing hernia repair compared to “freezing” used alone.
Ages Eligible for Study: | 1 Year to 13 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Contact: Kimmo Murto, MD | 613-737-2431 | kmurto@cheo.on.ca |
Canada, Ontario | |
Children's Hospital of Eastern Ontario | |
Ottawa, Ontario, Canada, K1H 8L1 |
Principal Investigator: | Kimmo Murto, MD | Children's Hospital of Eastern Ontario |
Study ID Numbers: | 05/17E |
Study First Received: | August 11, 2005 |
Last Updated: | September 22, 2005 |
ClinicalTrials.gov Identifier: | NCT00130091 |
Health Authority: | Canada: Health Canada |
unilateral hernia hydrocele |
pediatric clonidine nerve block |
Pathological Conditions, Anatomical Ropivacaine Hernia Clonidine |
Hernia, Abdominal Testicular Hydrocele Genital Diseases, Male Hernia, Inguinal |
Sympatholytics Neurotransmitter Agents Adrenergic alpha-Agonists Adrenergic Agents Molecular Mechanisms of Pharmacological Action Physiological Effects of Drugs Cardiovascular Agents Antihypertensive Agents |
Adrenergic Agonists Pharmacologic Actions Autonomic Agents Sensory System Agents Therapeutic Uses Analgesics Peripheral Nervous System Agents Central Nervous System Agents |