Pain practice : the official journal of World Institute of Pain
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The postsynaptic fibers of the pterygopalatine or sphenopalatine ganglion (PPG or SPG) supply the lacrimal and nasal glands. The PPG appears to play an important role in various pain syndromes including headaches, trigeminal and sphenopalatine neuralgia, atypical facial pain, muscle pain, vasomotor rhinitis, eye disorders, and herpes infection. ⋯ In addition, regional anesthesia of the distribution area of the SPG sensory fibers for nasal and dental surgery can be provided by SPGB via a transnasal, transoral, or lateral infratemporal approach. To arouse the interest of the modern-day clinicians in the use of the SPGB, the advantages, disadvantages, and modifications of the available methods for blockade are discussed.▪
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Multicenter Study Comparative Study Clinical Trial
Costs and health resources utilization following switching to pregabalin in individuals with gabapentin-refractory neuropathic pain: a post hoc analysis.
To analyze the changes in pain severity and associated costs resulting from resource utilization and reduced productivity in patients with gabapentin-refractory peripheral neuropathic pain who switched to pregabalin therapy in primary care settings in Spain. ⋯ The cost of care in patients with gabapentin-refractory peripheral neuropathic pain appeared to be significantly reduced after switching to pregabalin treatment, alone or in combination with other analgesic drugs, in a real-life setting.
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Randomized Controlled Trial Comparative Study
A double-blind, randomized, prospective study of epidural steroid injection vs. the mild® procedure in patients with symptomatic lumbar spinal stenosis.
Epidural steroid injections (ESIs) are commonly used to treat low back pain, including symptomatic lumbar spinal stenosis (LSS). Reports on LSS treatment with ESIs have not differentiated between neurogenic claudication, which is believed to result from nerve root compression, and lumbar radicular pain, thought to be caused by inflammation. While there is overlap between these groups, the clinical relevance of ESI treatment cannot be generalized between these 2 distinct diseases with completely different pathophysiological causes. ⋯ This study demonstrated that in LSS patients suffering with neurogenic claudication, mild provides statistically significantly better pain reduction and improved functional mobility vs. treatment with ESI.
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Randomized Controlled Trial
Intravenous acetaminophen for pain after major orthopedic surgery: an expanded analysis.
From the time that Sinatra et al. (Anesthesiology. 2005;102:822) was published to FDA apaproval of intravenous (IV) acetaminophen, an expanded analysis of the original raw study data became necessary for the regulatory submission. The following analyses were conducted: (1) sum of pain intensity differences over 24 hours (SPID24) using currently accepted imputation methods to account for both missing data and the effects of rescue; (2) efficacy results after the first 6 hours; (3) effects of gender, race/ethnicity, age, weight, surgical site, ASA Class, and serotonin antagonists; and (4) a stepwise regression analysis of why adverse events of nausea and vomiting were numerically (although not statistically) higher in the IV acetaminophen group compared with placebo. ⋯ Repeated-dose 24-hours end points were found to be as robust as previously published results. IV acetaminophen efficacy and safety appeared to be unaffected by specific subset variables.▪
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The development of diagnostic criteria and the use of provocative discography allow identifying the degenerative disc as causative structure for chronic low-back pain. Unfortunately, none of the available interventional treatment options have been demonstrated to be effective over a prolonged period of time for a considerable number of patients. Pathophysiological studies indicate sprouting of sensory nerves and inflammatory processes as underlying pain mechanisms. ⋯ Of all patients, 56% had > 50% pain reduction 1 year after first treatment. Our findings suggest that PRF in the nucleus may be considered for patients with proven discogenic pain. A randomized controlled trial to confirm our findings is justified.▪