European journal of pain : EJP
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Randomized Controlled Trial
Effects of genotype on TENS effectiveness in controlling knee pain in persons with mild to moderate osteoarthritis.
This study examined the extent to which genetic variability modifies Transcutaneous Electrical Nerve Stimulation (TENS) effectiveness in osteoarthritic knee pain. ⋯ Findings from this study demonstrate that genetic variation within the COMT and EDNRA genes influences the effectiveness of TENS, a non-pharmacologic pain-reduction intervention, in the context of osteoarthritic knee pain. Evidence such as this may contribute to risk models that provide a clinically useful tool for personalizing TENS interventions according to individual characteristics in order to best control pain and maximize functional status.
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Douleur Neuropathique 4 (DN4) is a screening questionnaire to help identify neuropathic pain (NP) in clinical practice and research. We tested the accuracy of the DN4 questionnaire in stratifying possible NP (pNP) and definite NP (dNP) in patients operated for breast cancer. ⋯ DN4 stratifies possible and definite postsurgical peripheral neuropathic pain. DN4i may also show this, but full DN4 is more accurate. We confirm DN4i as a valid screening tool for NP.
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Societal costs of low back pain (LBP) are high, yet few studies have been performed to identify the predictive factors of high societal costs among chronic LBP patients. This study aimed to determine which factors predict high societal costs in patients with chronic LBP. ⋯ Identifying low back pain patients who are at risk (risk stratification) of becoming high-cost users and making appropriate initiatives could help in reducing high costs.
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Population-based studies show that sleep problems and psychological symptoms may increase the risk of musculoskeletal pain onset in children/adolescents. However, there is no evidence of these associations within primary care settings, where interventions can take place. This study investigated whether children/adolescents who consulted their general practitioner for sleep problems or psychological symptoms are at higher risk of subsequent consultations for musculoskeletal conditions. ⋯ Population-based studies showed that sleep problems and psychological symptoms may be important precursors of musculoskeletal pain in children and adolescents. By investigating these associations in primary care settings, this study showed that children and adolescents with consultations for sleep problems or psychological symptoms were at increased risk of subsequent consultations for musculoskeletal conditions. These findings support results from population-based studies, and identify potential areas for further research and potential intervention within primary care.
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Review Randomized Controlled Trial Meta Analysis
Efficacy and harms of long-term opioid therapy in chronic non-cancer pain: Systematic review and meta-analysis of open-label extension trials with a study duration ≥ 26 weeks.
This updated systematic review evaluated the efficacy, acceptability and safety of long-term opioid therapy (LTOT) for chronic non-cancer pain (CNCP). ⋯ There is very low quality evidence of the long-term efficacy, tolerability and safety of opioids for chronic low back, osteoarthritis and diabetic polyneuropathic pain within the context of open-label extension studies of randomized controlled trials. Drop out rate due to adverse events and deaths increase with study duration. One-third of patients profit from LTOT. Long-term opioid therapy can be considered in some carefully selected and monitored patients.