Ultrasonic Morphological Study of the Great Auricular Nerve and Adjacent Structures

• Conditions: Great Auricular Nerve

• Registration Number: NCT03692156
• Lead Sponsor: Xin Jiang, MD

Brief Summary

Ultrasound-guided nerve block has the characteristics of high success rate, few complications, and high patient satisfaction. It has been widely used in brachial plexus and lumbar plexus nerve blocks. Studies of ultrasound-guided superficial cervical plexus block are mostly unsatisfactory, and may be due to anatomic localization of the puncture site rather than real-time ultrasound guidance. The great auricular nerve is the largest branch of the superficial cervical plexus and may be identified under ultrasound. The aim of this study is to establish the success rate of identification of the great auricular nerve by combining ultrasound imaging with transcutaneous nerve stimulation. In addition, we will study the relationship between the success rate of identification and the related factors of patients. Another purpose of this study is to locate the position where the great auricular nerve emerges the posterior border of the sternocleidomastoid muscle. The relationship between this point and the midpoint of posterior border of the sternocleidomastoid muscle and adjacent structures will also be studied.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-09-27
• Study First Submitted QC: 2018-09-28
• Study First Posted: 2018-10-02
• Status Verified: 2019-04
• Study Start: 2019-05-01
• Last Update Submitted: 2019-12-29
• Last Update Posted: 2020-01-02
• Primary Completion: 2020-03-30
• Study Completion: 2020-05-31

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

• Patients undergoing surgery in changzheng hospital

Exclusion Criteria

• Suffering from malignant tumors, poor overall condition
• Communication barriers, unable to objectively describe symptoms
• Huge mass in the neck

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Success rate of identification of the great auricular nerve combining ultrasound imaging with transcutaneous nerve stimulation	1 year	Proportion of patients who's great auricular nerve was identified by combining ultrasound imaging with transcutaneous nerve stimulation

Secondary Outcome Measures

Name	Time	Method
Difference in gender	1 year	Patients were divided into two groups according to whether they recognized the great auricular nerve or not, and the differences in gender composition were compared.
Difference in body fat rate	1 year	Patients were divided into two groups according to whether they recognized the great auricular nerve or not, and the differences in body fat rate were compared.
Distance between GAP and M	1 year	the distance between the point where the great auricular nerve emerges the posterior border of the sternocleidomastoid muscle and the midpoint of posterior border of the sternocleidomastoid muscle
SCM length	1 year	length of the posterior border of the sternocleidomastoid muscle
Difference in BMI	1 year	Patients were divided into two groups according to whether they recognized the great auricular nerve or not, and the differences in BMI were compared.
Success rate of identification of the great auricular nerve by ultrasound	1 year	Proportion of patients who's great auricular nerve was identified by ultrasound
Difference in neck circumference	1 year	Patients were divided into two groups according to whether they recognized the great auricular nerve or not, and the differences in neck circumference were compared.

Trial Locations

Locations (1)

Changzheng Hospital; 🇨🇳 Shanghai, Shanghai, China