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Intraoperative Neuromonitoring of the Recurrent Laryngeal Nerve Versus Neurostimulation

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: NCT01163045
Recruitment Status : Completed
First Posted : July 15, 2010
Last Update Posted : July 15, 2010
Information provided by:
University of Bologna

Brief Summary:
The purpose of this study is to evaluate if intraoperative neuromonitoring associated to neurostimulation of recurrent laryngeal nerve reduce the rate of recurrent laryngeal palsy respect to neurostimulation alone.

Condition or disease Intervention/treatment Phase
Thyroidectomy Procedure: thyroidectomy Phase 2

Detailed Description:
Anatomic and functional preservation of the recurrent laryngeal nerve is a key element of thyroid surgery. Surgical exposure and visual identification of the nerve during thyroid surgery has been shown to provide the best rates of normal postoperative vocal fold function. Nevertheless, identification of the nerve sometimes can be difficult in patients who are heavily scarred or who have undergone previous surgery. Moreover, an anatomical intact nerve does not always correlate with normal vocal fold function. So it is mandatory to identify the nerve and to establish its function. Two techniques are described to facilitate identification of the nerve and to test its function. One is the neurostimulation with laryngeal palpation which is an intermittent monitoring techniques that permits to evaluate the contraction of cricoarytenoid muscle (laryngeal twitch ) after stimulation of RLN or vagal nerve with an electric stimulator probe. More recently some authors have suggested a continuous intraoperative neuromonitoring which provide audio and visual feed back when the nerve is electrically or mechanically stimulated during thyroidectomy. However controversy remains as to whether intraoperative neuromonitoring confers any significant benefit in injury prevention of recurrent laryngeal nerve.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 250 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Intraoperative Neuromonitoring and Neurostimulation of the Recurrent Laryngeal Nerve Versus Neurostimulation Alone in Thyroid Surgery: a Randomized Clinical Trial
Study Start Date : January 2008
Actual Primary Completion Date : February 2009
Actual Study Completion Date : January 2010

Arm Intervention/treatment
Experimental: neuromonitoring and neurostimulation Procedure: thyroidectomy
total thyroidectomy and lobectomy

Experimental: neurostimulation of recurrent laryngeal nerve Procedure: thyroidectomy
total thyroidectomy and lobectomy

Primary Outcome Measures :
  1. recurrent laryngeal nerve paralysis

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 84 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Mono or bilateral thyroid surgery

Exclusion Criteria:

  • Previous thyroid and parathyroid surgery
  • Thyroidectomy with mono or bilateral neck dissection
  • Extended thyroidectomy for locally advanced thyroid carcinoma
  • Retrosternal goitre
  • Minimally invasive thyroid surgery
  • Preoperative palsy

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): NCT01163045

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Policlinico S.Orsola-Malpighi ENT Clini University of Bologna Italy
Bologna, Italy/Bologna, Italy, 40100
Sponsors and Collaborators
University of Bologna
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Study Director: Ottavio O Cavicchi, MD ENT Clinic Ploiclinico S.Orsola-Malpighi Bologna Italy
Publications of Results:
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Ottavio Cavicchi, ENT Clinic Policlinico S.Orsola-Malpighi Bologna, Italy Identifier: NCT01163045    
Other Study ID Numbers: 2 - Cavicchi
First Posted: July 15, 2010    Key Record Dates
Last Update Posted: July 15, 2010
Last Verified: June 2010
Keywords provided by University of Bologna:
intraoperative neuromonitoring
recurrent laryngeal nerve
palsy of recurrent laryngeal nerve