Spine
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Comparative Study Clinical Trial
Correlation between centrally versus peripherally transduced venous pressure in prone patients undergoing posterior spine surgery.
Prospective clinical observational study. ⋯ CVP and PVP correlate well under conditions associated with prone spine surgery. With a high level of agreement found in this study, PVP may represent an attractive alternative to CVP monitoring to assess fluid volume trends intraoperatively.
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Randomized Controlled Trial Comparative Study
A randomized placebo-controlled trial of single-dose IM corticosteroid for radicular low back pain.
A randomized, double-blind, placebo-controlled trial of patients with radicular low back pain who present to an emergency department (ED) within 1 week of pain onset. ⋯ This study was a negative study, though there was a suggestion of benefit of methylprednisolone acetate in a population of young adults with acute radicular low back pain. Further work with a larger sample of patients is needed.
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Comparative Study
Biomechanical response of a lumbar intervertebral disc to manual lifting activities: a poroelastic finite element model study.
Determination of damage to a lumbar disc caused by lifting using a poroelastic finite element model study. ⋯ Asymmetric lifting involving lateral bending of the trunk produced large motions that might cause localized disc tissue injury. Stresses larger than the failure strength of the corresponding disc tissues were experienced during asymmetric lifting. Lifting that involves lateral bending of the trunk was the most hazardous type of loading with regard to damage to the disc.
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Comparative Study
Cervical spine imaging using standard C-arm fluoroscopy: patient and surgeon exposure to ionizing radiation.
A cadaveric cervical spine specimen is imaged with a standard C-arm fluoroscope during a simulated procedure. Patient and surgeon exposure to radiation is estimated by placing dosimeters at various locations in 3-dimensional space. ⋯ Care should be taken when working on both sides of the imaged subject. Considerable radiation exposure can be encountered when working with a C-arm fluoroscope if appropriate precautions are not observed. All appropriate radiation dose-reducing measures should be strictly enforced by the supervising physician to minimize risk to the patient and the medical team.