Pain physician
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To assess whether unilateral L2 infiltration with local anesthetic can be used to identify patients who will have negative discograms and thus eliminate the need for the discogram. Discogenic low-back pain is considered to have afferent pathways in the sinuvertebral nerves, mainly originating from the ventral rami of the spinal nerves. There is evidence that pain arising from the lower lumbar intervertebral discs may be transmitted through the sympathetic afferent fibers contained in the L2 spinal nerve root. Provocative discography, within the context of other clinical data, is the current "gold standard" by which to diagnose discogenic low-back pain, but a far more invasive procedure than L2 infiltration. ⋯ The results showed that unilateral L2 infiltration is not predictive of discogenic low-back pain when compared to discography, the current "gold-standard" for diagnosis.
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Fluoroscopic guidance is frequently utilized in performing various types of interventional techniques. The major purpose of fluoroscopy is accurate needle placement to ensure target specificity and accurate delivery of the injected drug. However, radiation exposure may be associated with risks to physician, patient, and personnel. Multiple studies have evaluated the risk of radiation exposure and techniques to reduce the risk in private practice settings. However, the literature is scant in evaluating the risk of radiation exposure in teaching hospitals in university settings. ⋯ The results of this study show that the fluoroscopy exposure time for various interventional procedures performed in the university settings are significantly higher than the radiation exposure periods in private practice settings. This study also showed significant differences among physicians in the same university setting.
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Over the years, there has been a shift toward the increased reliance on opioids for the treatment of chronic pain. It is well known that some patients do not provide an appropriate history or underestimate their drug intake, and may exaggerate reported pain levels. Numerous studies have documented the incidence of illicit drug use and abuse of opioids in chronic pain patients. It is not known what proportion of patients have already been exposed to controlled substances prior to presenting for interventional pain management. ⋯ Ninety percent of these patients were taking opioids. Twenty-seven patients incorrectly reported opioid use, either underuse or overuse, with 23 patients using illicit drugs, 12 using non-prescription opioids, and with 35 of 100 patients at initial evaluation exhibiting one of the abuse behaviors.
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Interventional pain management has been growing by leaps and bounds with the introduction of an array of new CPT codes, the expansion of interventional techniques, and utilization. Interventional pain management dates back to the origin of neural blockade and regional analgesia, in 1884. Over the years, pain medicine and interventional pain management have taken many approaches, including biological, biopsychosocial, and psychosocial. ⋯ Overall, the utilization of various nerve blocks (excluding epidurals, disc injections, and facet joint blocks) in Medicare recipients from 1998 to 2003 were performed approximately 50% of the time by non-pain physicians. Interventional pain management is growing rapidly, under the watchful eye of the government, and third party payors. Establishing an algorithmic approach and following guidelines may improve compliance and quality of care without implications of abuse.
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Lumbar facet (zygapophysial) joints have been implicated as the source of chronic pain in 15% to 45% of patients with chronic low back pain. Diagnosis may be confounded by false-positive results with a single diagnostic block and administration of anxiolytics and narcotics prior to or during the diagnostic facet joint blocks. ⋯ The administration of sedation with midazolam or fentanyl is a confounding factor in the diagnosis of lumbar facet joint pain in patients with chronic low back pain. However, this study suggests that if strict criteria including pain relief and ability to perform prior painful movements is used as the standard for evaluating the effect of controlled local anesthetic blocks, the diagnostic validity of lumbar facet joint nerve blocks may be preserved.