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Analgesic Efficacy of Bilateral Superficial Cervical Plexus Block in Robot-assisted Endoscopic Thyroidectomy Using a Transaxillary Approach

This study has been completed.
Information provided by (Responsible Party):
Yonsei University Identifier:
First received: March 28, 2011
Last updated: February 26, 2012
Last verified: February 2012
This study was designed to investigate the analgesic effect of bilateral superficial cervical plexus block in patients undergoing robot-assisted endoscopic thyroidectomy. The investigators hypothesized that bilateral superficial cervical plexus blockade would reduce the patient's pain score by more than 10 (on a VAS scale of 0~100) compared to a placebo group and control group.

Condition Intervention
Thyroid Cancer
Procedure: Bilateral superficial cervical plexus block
Procedure: placebo
Procedure: Control group

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Analgesic Efficacy of Bilateral Superficial Cervical Plexus Block in Robot-assisted Endoscopic Thyroidectomy Using a Transaxillary Approach

Further study details as provided by Yonsei University:

Primary Outcome Measures:
  • Visual analogue pain score [ Time Frame: Immediate post-operation (at recovery room) (day 1) ]

Enrollment: 97
Study Start Date: January 2011
Study Completion Date: February 2012
Primary Completion Date: February 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Group B
Group B = Nerve block group
Procedure: Bilateral superficial cervical plexus block
Bilateral superficial cervical plexus block with 0.525% ropivacaine 20ml
Placebo Comparator: Group L
Group L = Local wound infiltration group
Procedure: placebo
Procedure: Bilateral superficial cervical plexus block with normal saline 20ml
Active Comparator: Group C
Group C = Control group
Procedure: Control group
Procedure: Local anesthetic infiltration at incision site with 0.525% ropivacaine 20ml


Ages Eligible for Study:   20 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • ASA class 1 or 2 adult patients scheduled for robot-assisted endoscopic thyroidectomy

Exclusion Criteria:

  • Patient refusal
  • Bleeding diathesis
  • Allergies to local anesthetics
  • Patient unable to read consent form (Foreigner, illiterate)
  • Pregnant women
  Contacts and Locations
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Please refer to this study by its identifier: NCT01325857

Korea, Republic of
Severance Hospital
Seoul, Korea, Republic of, 120-752
Sponsors and Collaborators
Yonsei University
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Yonsei University Identifier: NCT01325857     History of Changes
Other Study ID Numbers: 4-2010-0668
Study First Received: March 28, 2011
Last Updated: February 26, 2012

Additional relevant MeSH terms:
Thyroid Neoplasms
Endocrine Gland Neoplasms
Neoplasms by Site
Head and Neck Neoplasms
Endocrine System Diseases
Thyroid Diseases
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs processed this record on May 25, 2017