The Clinical journal of pain
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Fifteen patients with brachial plexus avulsion and five patients with postherpetic pain underwent dorsal root entry zone surgery with intraoperative impedance monitoring. The usual range of initial impedance values recorded in the superficial layers of the normal cord is from 1,000 to 1,500 omega. ⋯ In postherpetic neuralgia, measurements of impedance are abnormally low in the involved area, in which the roots appear macroscopically abnormal. In this study, tissue impedance was correlated with gross pathologic changes in the spinal cord.
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Previous findings in patients with nonmalignant pain indicate a relationship between pain coping strategies and psychological factors. Although coping strategies have been explored in patients with cancer pain, relationships with such factors have not been reported. We wished to examine relationships between selected pain and psychological variables and the use of pain coping strategies. ⋯ Pain intensity and state anxiety demonstrated similar relationships. Pain quality as measured with the MPQ demonstrated moderately strong correlation with diverting attention, praying and hoping, catastrophizing, and increased activity. Interventions aimed at reinforcing or expanding a patient's pain coping repertoire should be developed with consideration given to the patient's anxiety level, pain intensity, pain quality, and pain expression preference.
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This study examined factors that help to identify low back pain patients who do not benefit from a lumbar epidural steroid injection (LESI). Two-hundred and forty-nine chronic low back pain patients assessed their pain intensity before, 1 day after, and 2 weeks after receiving a LESI. All patients completed a comprehensive pain questionnaire and a Brief Symptom Inventory (BSI) prior to treatment. ⋯ Nine patients (7%) felt that the treatment was harmful. Four factors were identified that best predicted poor outcome 2 weeks after LESI: (a) greater number of previous treatments for pain; (b) more medications taken; (c) pain not necessarily increased by activities, and (d) pain increased by coughing. Factors that predicted no benefit 1 year after treatment included (a) pain does not interfere with activities; (b) unemployment due to pain; (c) normal straight-leg raise test prior to treatment; and (d) pain not decreased by medication.
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This study examined the extent to which being involved in civil and industrial litigation predicted outcome in an population of chronic pain patients. Data were collected in a structured telephone interview for a litigant group of 80 patients and a nonlitigant group of 47 patients. There were no significant differences in the amount of medication used, the number of hours spent resting per day, or the number of individuals who were able to return to work. ⋯ Litigation was found to be the primary predictor of Zung depression scores. Discriminant function analyses indicated that litigation was not the most important variable in distinguishing between those working and not working. Results lend support to previous studies that suggest that the suspicion and disbelief with which litigating patients are often treated is unfounded.