COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH:
Working… Menu

Effect of Intraoperative Magnesium on Remifentanil-induced Postoperative Hyperalgesia After Thyroidectomy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01025245
Recruitment Status : Completed
First Posted : December 3, 2009
Last Update Posted : June 16, 2010
Information provided by:
Yonsei University

Brief Summary:
The purpose of this study is to study the effect of intraoperative magnesium on remifentanil-induced postoperative hyperalgesia after thyroidectomy

Condition or disease Intervention/treatment Phase
Hyperalgesia Drug: remifentanil, MgSO4 Phase 4

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 84 participants
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Study Start Date : November 2009
Actual Primary Completion Date : January 2010
Actual Study Completion Date : January 2010

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: remifentanil, MgSO4
Experimental 1 : Intraoperative remifentanil infusion at 0.2 ㎍/㎏/min and MgSO4 30 mg/kg IV at the induction followed by intraoperative infusion at 10 mg/kg/hr Drug : remifentanil, MgSO4 Experimental 2 : Intraoperative remifentanil infusion at 0.2 ㎍/㎏/min and normal saline Drug : remifentanil Active comparator : Intraoperative remifentanil infusion at 0.05 ㎍/㎏/min and normal saline Drug : remifentanil
Drug: remifentanil, MgSO4
Patients undergoing thyroidectomy will be randomly assigned to one of three groups. Remifentanil will be infused intraoperatively at 0.05 ㎍/㎏/min (group Ⅰ) or 0.2 ㎍/㎏/min (group Ⅱ & Ⅲ). Patients in group Ⅲ will be received 30 ㎎/㎏ MgSO4 at the induction of general anesthesia followed by a maintenance infusion of 10 ㎎/㎏/hr intraoperatively until skin closure.

Primary Outcome Measures :
  1. Tactile pain thresholds adjacent to the surgical wound assessed by von Frey hair before the induction and at postoperative 24 & 48 hrs [ Time Frame: postoperative 48 hrs ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   20 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients undergoing thyroidectomy,
  • Age 20-65,
  • American Society of Anesthesiologists physical status classification I or II.

Exclusion Criteria:

  • History of chronic pain, Regular use of analgesic, antiepileptic or antidepressive drugs,
  • History of drug & alcohol abuse,
  • Psychiatric disorder,
  • Use of opioids within 24hrs,
  • Renal disease with decreased GFR,
  • Neuromuscular disease, Severe cardiac disease.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01025245

Layout table for location information
Korea, Republic of
Severance Hospital
Seoul, Korea, Republic of
Sponsors and Collaborators
Yonsei University
Layout table for additonal information
Responsible Party: Yuen Hee Shim / Associate professor of Department of Anesthesiology and Pain Medicine and Anesthesia and Pain Reseach Institute, Yonsei University College of Medicine, Seoul, Republic of Korea Identifier: NCT01025245    
Other Study ID Numbers: 4-2009-0511
First Posted: December 3, 2009    Key Record Dates
Last Update Posted: June 16, 2010
Last Verified: June 2010
Keywords provided by Yonsei University:
Remifentanil induced postoperative hyperalgesia
Additional relevant MeSH terms:
Layout table for MeSH terms
Somatosensory Disorders
Sensation Disorders
Neurologic Manifestations
Nervous System Diseases
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents