About this trial
Injections that freeze neck joints can be done using x-rays or ultrasound imaging, which as a newer way of guiding the needle to the right spot. This study will look at how often freezing liquid goes into a blood vessel during neck injections that freeze neck joints when ultrasound guidance is used to place the needle. When this happens, it can go undetected because it does not make the patient feel any different, however it could cause a test block to be falsely negative, leading to the wrong diagnosis. Based on previous studies, we think that this happens rarely, and the purpose of this study is to prove that conclusively
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
None
Disqualifiers
None
Trial population
Patients undergoing cervical medial branch blocks as part of their usual care.
Trial design
Cohort
Prospective
Treatments tested in this trial
cervical medial branch block
Diagnostic testultrasound-guided cervical medial branch block with fluoroscopic control and digital subtraction angiography
Treatment groups
Trial outcomes
Primary outcomes
Incidence of vascular uptake
Incidence of intravascular spread of contrast as determined after a review of the DSA sequences by a physician not involved in the patient's care.
Secondary outcomes
Observed blood vessels
Number and distribution of vessels observed near the target.
Incidence of vascular breach
Incidence of vascular breach during needle placement.
Number of needle repositionings
Number of needle repositionings required (before and after DSA)
Complications
Occurrence of any block-related complications.
Sponsors and contacts
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Montreal General Hospital
Lead sponsor
University of British Columbia
Sponsor institution
University of British Columbia
Collaborator