Spine
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Randomized Controlled Trial Comparative Study
Greater peripheral blood flow but less bleeding with propofol versus sevoflurane during spine surgery: a possible physiologic model?
Prospective, randomized, single blind. ⋯ Despite the greater blood flow when it is used, propofol causes less bleeding than sevoflurane during spine surgery and could be more indicated to produce hypotension during anesthesia. Moreover, it is possible to explain our findings hypothesizing a selective vasodilation of propofol (postcapillary, venous vasodilation), different from that of sevoflurane (precapillary, arteriolar vasodilation).
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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 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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Comparative Study
Disability in subacute whiplash patients: usefulness of the neck disability index.
Cross-sectional study. ⋯ The NDI showed excellent psychometric properties in a sample of subacute whiplash patients. Additional research is needed to replicate the NDIs factor structure.
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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.