Clinical trial NCT05108103: Determination of Longus Colli Muscle Thickness by Ultrasonography
Official title: How Far Should The Needle Be Withdrawn for Stellate Ganglion Block: Determination of Longus Colli Muscle Thickness by Ultrasonography
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Pain Syndrome
Pain, Intractable
Complex Regional Pain Syndromes
Hyperhidrosis
Keywords: Stellate Ganglion
Longus Colli Muscle
Ultrasound
Lead sponsor: Istanbul University
Sponsor class: OTHER
First posted: 2021-11-04
Enrollment: 200
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_ONLY
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Healthy volunteers

Brief summary: This study aims to assess the longus colli muscle thickness by ultrasonography in order to guide stellate ganglion blocks

Detailed description: Stellate ganglion block is an interventional pain management procedure that is often performed for diagnostic and therapeutic purposes. It has long been performed with the guidance of fluoroscopy, and despite the increasing use of ultrasonography in recent years, fluoroscopy is still the gold standard method.

In traditional fluoroscopic method, the needle is directed to the transverse process of the C6 vertebra, after touching the anterior tubercle (Chassaignac's tubercule) the needle is slightly withdrawn and following a negative aspiration, injection is performed.

The ideal placement of the needle should be anterolateral to the longus colli muscle and deep to the prevertebral fascia. Further placement may cause intramuscular spread and superficial placement may cause injection in the carotid sheath or vascular structures. These are the most important reasons for clinical ineffectiveness. How far should the needle be withdrawn? Data is inconsistent in the literature.

The primary aim of this study is to determine the distance from transverse process to longus colli muscles anterior border and from transverse process to carotid sheath's posterior border. Secondary aim is to investigate the relationship between longus colli muscle thickness and age, gender, height, weight, BMI and neck circumference.

Eligibility criteria: Inclusion Criteria:

* Age between 18 - 65 years,
* Giving informed consent for examination, ultrasonographic evaluation and study participation

Exclusion Criteria:

* Having a chronic neck pain for more than 6 months,
* Having any neurological or musculoskeletal conditions that may affect the anatomy of cervical region (cervical disc herniation, torticollis, severe scoliosis, vertebral malformation, spinal stenosis, myopathies, etc.)
* Having a history of surgery or radiation therapy in the cervical region

Primary outcomes:
measure: Distance between corpus and longus colli muscle's anterior border on C6 level (millimeters)
timeFrame: 0 minutes
Secondary outcomes:
measure: Distance between corpus and longus colli muscle's anterior border on C7 level (millimeters)
timeFrame: 0 minutes
measure: Maximum anteroposterior width of longus colli muscle on C6 level (millimeters)
timeFrame: 0 minutes
measure: Maximum anteroposterior width of longus colli muscle on C7 level (millimeters)
timeFrame: 0 minutes
measure: Distance between esophagus and estimated needle plane (millimeters)
timeFrame: 0 minutes
measure: Neck circumference (centimeters)
timeFrame: 0 minutes
Other outcomes:
Locations:
city: Istanbul
country: Turkey
facility: Halil Çetingök
Study officials:
affiliation: Istanbul University Istanbul Faculty of Medicine, Department of Pain Medicine
name: Halil Çetingök, Ass. Prof.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Ates Y, Asik I, Ozgencil E, Acar HI, Yagmurlu B, Tekdemir I. Evaluation of the longus colli muscle in relation to stellate ganglion block. Reg Anesth Pain Med. 2009 May-Jun;34(3):219-23. doi: 10.1097/AAP.0b013e3181a32a02.
citation: Narouze S. Ultrasound-guided stellate ganglion block: safety and efficacy. Curr Pain Headache Rep. 2014 Jun;18(6):424. doi: 10.1007/s11916-014-0424-5.