An observational study in Pain Syndrome, Pain, Intractable and Complex Regional Pain Syndromes, sponsored by Istanbul University. Completed at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-10-03.
Sponsored by Istanbul University · Observational
This study aims to assess the longus colli muscle thickness by ultrasonography in order to guide stellate ganglion blocks
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process of the C6 vertebra, after touching the anterior tubercle (Chassaignac's tubercule) the needle is slightly withdrawn and following a negative aspiration, injection is performed.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 How far should the needle be withdrawn?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.
405 studies on the registry are indexed under Somatoform Disorders; 79 are open to participants now.
This study's enrollment of 200 is above the median of 96 across 78 observational studies indexed under Somatoform Disorders.
Browse Somatoform Disorders studies →Istanbul University is the lead sponsor of 507 studies on the registry; 80 are open to participants now.
Of its 5 completed or terminated interventional studies of FDA-regulated products, 1 (20%) have results posted.
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Healthy volunteers
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Exclusion Criteria:
Distance between corpus and longus colli muscle's anterior border on C6 level (millimeters)
Distance between corpus and longus colli muscle's anterior border on C6 level will be evaluated with ultrasonography.
Time frame: 0 minutes
Distance between corpus and longus colli muscle's anterior border on C7 level (millimeters)
Distance between corpus and longus colli muscle's anterior border on C7 level will be evaluated with ultrasonography.
Time frame: 0 minutes
Maximum anteroposterior width of longus colli muscle on C6 level (millimeters)
Maximum anteroposterior width of longus colli muscle on C6 level will be evaluated with ultrasonography.
Time frame: 0 minutes
Maximum anteroposterior width of longus colli muscle on C7 level (millimeters)
Maximum anteroposterior width of longus colli muscle on C6 level will be evaluated with ultrasonography.
Time frame: 0 minutes
Distance between esophagus and estimated needle plane (millimeters)
Distance between esophagus and estimated needle plane will be evaluated with ultrasonography.
Time frame: 0 minutes
Neck circumference (centimeters)
Neck circumference
Time frame: 0 minutes
Ran from Mar 2021 to primary completion in Mar 2022, 12 months.
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This study is completed, as verified in Sep 2022. You cannot join it, but the record below documents what was studied.
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