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Background: An assessment of paraspinal muscle degeneration based on magnetic resonance imaging has been used to investigate both sarcopenia and myosteatosis. The morphologic changes in cross‐sectional area and fat infiltration of the paraspinal muscles can affect pain outcomes after epidural steroid injection. Methods: Patients ≥65 years of age who underwent fluoroscopy‐guided lumbar epidural steroid injections were enrolled. Good analgesia was defined as ≥50% reduction in pain score at 4 weeks after injection. Cross‐sectional area and grade of fat infiltration of the paraspinal muscles on magnetic resonance images at the level of L3–L4 disc were measured. Patient demographics, pain‐related factors, clinical factors, and paraspinal muscle measurements were compared between good and poor analgesia groups. The factors associated with pain outcomes after injection were identified using multivariate analysis. Results: A total of 245 patients consisting of 149 and 96 patients in the good and poor analgesia groups, respectively, fully satisfied the study criteria for analysis. Patients of older age, opioid use, and high‐grade foraminal stenosis were frequently observed in the poor analgesia group. The grade of fat infiltration of the paraspinal muscles was significantly higher in the poor analgesia group (Grade 2, 20.8% vs. 42.7%, p < 0.001), and this result was predominantly observed in female patients. However, there was no difference in the muscle cross‐sectional area between the two groups (18.29 ± 3.16 vs. 18.59 ± 3.03 cm2/m2, p = 0.460). The percentage of patients with good analgesia decreased as the grade of fat infiltration increased (Grade 0 = 75.0%, Grade 1 = 65.8%, Grade 2 = 43.0%, p < 0.001). Multivariate logistic regression analysis revealed that preinjection opioid use [adjusted odds ratio (aOR) = 1.926, 95% confidence interval (CI) = 1.084–3.422, p = 0.025], moderate to severe foraminal stenosis (aOR = 2.859, 95% CI = 1.371–5.965, p = 0.005), and high‐grade fat infiltration of the paraspinal muscles (aOR = 4.258, 95% CI = 1.805–10.043, p = 0.001) were significantly associated with poor analgesia after injection. Conclusion: High fat infiltration of the paraspinal muscles at the mid‐lumbar region appeared to be an independent factor associated with poor analgesia after epidural steroid injection in elderly patients with symptomatic degenerative lumbar spinal disease receiving conservative care. However, the cross‐sectional area of the paraspinal muscles was not associated with pain relief after injection. [ABSTRACT FROM AUTHOR]

Background Central sensitization plays an important role in the chronic pain experienced by osteoarthritis ( OA) patients. In this prospective observational study, we investigated the influence of the level of preoperative centrally mediated symptoms measured by the Central Sensitization Inventory ( CSI) on pain intensity after total knee arthroplasty ( TKA) for OA. Methods Ninety-eight female OA patients undergoing TKA were enrolled in this study. We assessed CSI scores, pain-related data, and other clinical data preoperatively. All patients received spinal anesthesia and postoperative epidural analgesia. Pain intensity (at rest and on movement) and rescue meperidine requirements were assessed during postoperative days 1 and 2. Also, pain intensity and patient satisfaction were assessed 1 month and 3 months after surgery. After the completion of all postoperative assessments, we separated the study population into a preoperative CSI score ≥40 and <40 group. We assessed pain-related data between the 2 groups at each assessment time. Results Ninety-one patients completed the postoperative assessments (a preoperative CSI ≥40 group; n = 44, CSI <40 group; n = 47). Patients with preoperative CSI ≥40 complained of a greater pain intensity ( P = 0.001) during postoperative days 1 and 2 and required a higher dose of meperidine rescue ( P = 0.003) than those with a preoperative CSI <40. The high CSI score group also showed a less favorable outcome in terms of pain relief on follow-up at 1 month ( P = 0.006) and 3 months ( P = 0.002) after surgery. In multivariate analysis, a preoperative CSI score ≥40 was the strongest determinant with 5.091 of the highest odds ratio (95% CI 1.324 to 19.523, P = 0.016) for predicting a persistent pain 3 months after surgery among demographic and pain-related variables. Conclusions OA patients with high levels of comorbid centrally mediated symptoms showed severe pain and increased analgesic requirements after TKA in the early postoperative period. Moreover, these patients seemed to be at higher risk of persistent pain, and a high CSI score was predictive of low patient satisfaction in terms of pain relief after surgery. [ABSTRACT FROM AUTHOR]

Background This study estimates the duration of sleep and its relationships with clinical correlates in a community sample of elderly individuals in Korea. Methods A total of 1924 individuals aged 65 and over were interviewed in Korea. Sleep durations were classified into five categories: 5.00 h or less, 6.00 h per day, 7.00 h per day, 8.00 h per day, and 9.00 h or more per day. Sleep disturbance was classified into four sleep complaints: difficulty initiating sleep, difficulty maintaining sleep, early-morning awakening, and non-restorative sleep. The Mini- Mental Status Examination, the Geriatric Depression Scale, and questionnaires about the presence of cardiovascular disease were employed. Results The most frequent self-reported sleep duration was 7.00 h. The mean sleep duration was 6.46 h. Female subjects, subjects between the ages of 75 and 79, and subjects with current depression were associated with sleeping for 6.00 h or less or 9.00 h or more. Subjects who lived alone and those with cardiovascular disease were associated with sleeping for 5.00 h or less. Subjects aged 80 and over, formally educated subjects, current smokers, and subjects with cognitive dysfunction were associated with sleeping for 9.00 h or more. Sleep disturbances according to sleep duration has a U-shaped distribution. We found that all sleep disturbances were significantly related to sleep durations of 6.00 h or less compared to sleep durations of 7.00 h. We also found that non-restorative sleep was significantly related to sleep durations of 8.00 h or more compared to sleep durations of 7.00 h. Conclusion A relatively high prevalence of short or long sleep duration was identified. Various sociodemographic variables influenced sleep duration. Depression, cognitive dysfunction, and cardiovascular disease were associated with short or long sleep duration. Careful attention should be paid to the health of elderly individuals who are short or long sleepers. [ABSTRACT FROM AUTHOR]

Aim: This study examined the effects of a conscious sedation dressing on pain and anxiety in pediatric patients with burns. Methods: This was a quasi‐experimental study, using a nonequivalent control group. Using convenience sampling, the participants were assigned to two groups, an experimental group (n = 10), which comprised children who received a conscious sedation dressing, and a control group (n = 13), which comprised children who received general dressing care. To minimize the risk of contamination between the two groups, the sampling was sequentially performed. Results: The children in the experimental group showed significantly lower levels of pain (U = 3.29, d = 1.00, P =.003) and physiological responses, as evidenced by lower systolic blood pressures, diastolic blood pressures, pulse rates, and respiratory rates than the control group (systolic blood pressures: t = 5. 05, d = 1.22, P <.001; diastolic blood pressures: t = 2.12, d = 0.93, P =.046; pulse rates: t = 2.28, d = 1.00, P =.033; and respiratory rates: t = 2.47, d = 1.09, P =.022). Conclusion: The application of a conscious sedation dressing may alleviate pain and anxiety for pediatric burn patients. [ABSTRACT FROM AUTHOR]