Independent Studies Show A Better Cervical Collar
By Robert Hurwitz, M.D.
Cervical immobilization has long been considered an essential first step in addressing trauma patients. For 40 years, there has been controversy over risk/benefits of a semi-rigid collar. Some studies have even suggested that collars can even be omitted as long as patients are immobilized until arrival at an ER or trauma center.
Because radiologists have the final say in diagnosing normal vs fracture of cervical spine, we were asked to undertake a study to find the best solution for cervical immobilization.
To address this controversy, we used state of the art radiology techniques in assessing jugular venous return and spinal curvature with and without various collars.
The first parameter studied was a comparison of jugular venous Doppler flow and diameter of internal jugular with no collar, semi-rigid collar and the SIPQuik (vacuum cervical splint). This is felt to be a surrogate of unintentional effect on intracranial pressure. The second parameter studied was any possible distraction of the cervical spine. Unintended straightening of the cervical spine has the potential of displacing an unsuspected cervical fracture. For this parameter, a lateral radiograph was obtained with and without the collar in place.
Preliminary results show that the SIPQuik vacuum cervical splint does not increase jugular venous distension (a surrogate for possible block of venous return) compared to the semi-rigid collar. Measurements of normal cervical lordosis remained unchanged with the SIPQuik, but undesirable straightening of the cervical spine (as a measure of distraction) was seen with the semi-rigid collar.
Our clinical colleagues agree that the SIPQuik vacuum cervical splint is a “one size fits all” solution for rapid application in trauma patients. This could end the endless debate of collar, no collar, soft collar, or rigid collar. More thorough testing and confirmation by other groups with all available semi-rigid collars is underway. A future peer reviewed paper will contain all of the methodology used in our study.
Robert Hurwitz, M.D.
(HopkinsRead Radiology and Touro University School of Medicine, Las Vegas, NV.)