The Clinical journal of pain
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Pain is identified as the third largest health problem in the world, impacting sleep, physical functioning, and psychologic functioning. Pain has been viewed as a multidimensional experience influenced by biology, psychology, cultural conditioning, expectancies, and social contingencies. The aims of this study were to examine the psychometric properties and the differential item functioning (DIF) of the short-form McGill Pain Questionnaire (SF-MPQ) to test the cultural differences in verbally based pain expression. ⋯ Test bias was relatively small (0.74) given the entire scale of the SF-MPQ (0 to 45), indicating that this measure seems to be used equivalently across these 2 groups. This study shows 1 method in evaluating the cross-cultural validity of pain assessment instruments, and contributes to the understanding of cross-cultural variability in item reporting on the SF-MPQ.
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To determine the correlation between magnetic resonance imaging (MRI) pathology and the response to diagnostic facet medial branch block (MBB) and L5 dorsal ramus medial branch block and radiofrequency (RF) denervation of lumbar facet joints. ⋯ Whereas some relationships were noted between MRI findings and the response to lumbar facet joint interventions, many of these correlations tended to be weak. However, this study does suggest the possibility that patients with spinal stenosis, often considered an exclusion criterion for facet interventions, may respond to RF denervation of facet joints. Prospective studies are needed to confirm these observations.
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To compare a central analgesic mechanism known as diffuse noxious inhibitory controls (DNIC) using somatic test stimuli and somatic conditioning stimuli, (CS) in irritable bowel syndrome (IBS) patients and healthy controls. ⋯ These data demonstrate deficient DNIC in IBS. This is the first study to adequately control for alternative explanations of pain reduction during counterirritation. Only by controlling for nonspecific effects can evidence of deficient DNIC be attributed to dysregulation in endogenous analgesic mechanisms.
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Randomized Controlled Trial Clinical Trial
Intraperitoneal lidocaine instillation and postcesarean pain after parietal peritoneal closure: a randomized double blind placebo-controlled trial.
To evaluate the effects of intraperitoneal instillation of lidocaine on postcesarean pain in patients with pariental periotoneal closure. ⋯ Intraperitoneal instillation of 200 mg of lidocaine decreased the incidence and scores of postcesarean pain when the parietal peritoneum was sutured. Further studies in a setting offering more effective acute pain control protocols, preferably with patient-controlled analgesia, are recommended to assess the use of lidocaine before it can be widely practiced.
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Randomized Controlled Trial
A randomized clinical trial of the efficacy of scheduled dosing of acetaminophen and hydrocodone for the management of postoperative pain in children after tonsillectomy.
To determine the effectiveness of around-the-clock (ATC) analgesic administration, with or without nurse coaching, compared with standard care with as needed (PRN) dosing in children undergoing outpatient tonsillectomy. ⋯ Scheduled dosing of acetaminophen and hydrocodone is more effective than PRN dosing in reducing pain intensity in children after tonsillectomy. Nurse coaching does not impact parent's adherence to ATC dosing.