Bilateral Superficial Cervical Plexus Block in Thyroid/Parathyroid Surgery

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    Mahidol University
Updated on 2 June 2021
parathyroid disease
parathyroid hormones
parathyroid surgery


To compare efficacy and safety between bilateral superficial cervical plexus block combined with intravenous sedation (RA group) and general anesthesia (GA group) for thyroid and parathyroid operations. This study evaluates postoperative numerical pain score and systemic opioid requirement within 24 hours.


According to literature review, there is limit information about efficacy and safety of thyroid and parathyroid operations under bilateral superficial cervical plexus block combined with intravenous sedation without general anesthesia. General anesthesia is commonly used for neck operations because it is easy to perform. However in high cardiovascular or pulmonary risk patients such as end stage renal disease (ESRD) patients, regional anesthesia such as superficial cervical plexus block combined with intravenous sedation have become an alternative technique for neck operations.

This study evaluate whether regional anesthesia (RA) technique can be the alternative technique for thyroid/parathyroid surgery compare to conventional technique (GA).

Condition Hyperparathyroidism, PARATHYROID DISORDER, Hyperparathyroidism (Pediatric), Parathyroid Disorders, Parathyroid Disease, Benign Tumor of Thyroid
Treatment General Anesthesia with endotracheal tube, Bilateral superficial cervical plexus block with 0.25% bupivacaine 8 ml each (total 16 ml), Dexmedetomidine plus propofol infusion, Local infiltraion analgesia
Clinical Study IdentifierNCT04051099
SponsorMahidol University
Last Modified on2 June 2021


Yes No Not Sure

Inclusion Criteria

American Society of Anesthesiologists (ASA) grade I-III, aged over 18 years
Elective thyroidectomy, thyroid lobectomy, parathyroidectomy

Exclusion Criteria

Language barrier or inability to communicate with the operating team
Allergy to local anaesthetic
Known substernal, retroesophageal or retrotracheal goiter
Thyroid cancer
Previous neck exploration or neck radiation
Recurrent laryngeal nerve paralysis
BMI 30
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