The Clinical journal of pain
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The objective of this systematic review was to assess the effectiveness of guided imagery (GI) as a treatment option for musculoskeletal pain (MSP). ⋯ It is concluded that there are too few rigorous RCTs testing the effectiveness of GI in the management of MSP. Therefore, the evidence that GI alleviates MSP is encouraging but inconclusive.
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Randomized Controlled Trial
Efficacy of small doses of ketamine with morphine to decrease procedural pain responses during open wound care.
The purpose of this study was to evaluate differences in pain intensity, pain quality, physiological measures, and adverse effects when patients received morphine with saline (MS) compared with morphine and a small dose of ketamine (MK) before an open wound care procedure (WCP). ⋯ Ketamine with morphine significantly reduced procedural wound pain intensity during WCP. Adverse effects and higher diastolic BP occurred with MK. Further research is warranted to determine the optimal analgesic dose of ketamine or if the addition of a benzodiazepine would mitigate the psychotomimetic effects of ketamine.
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To determine the hypoalgesic effects of transcutaneous electrical nerve stimulation (TENS) parameter combinations on experimental models in healthy humans. ⋯ The level of hypoalgesic efficacy of TENS is clearly dependent on TENS parameter combination selection (defined in terms of intensity, frequency, and stimulation site) and experimental pain model. Future clinical RCTs may consider these TENS dose responses.
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Temporomandibular disorders (TMDs) are considered to be comorbid with headaches. Earlier population studies have suggested that TMD may also be a risk factor for migraine progression. If that is true, TMD should be associated with specific headache syndromes (eg, migraine and chronic migraine), but not with headaches overall. Accordingly, our aim was to explore the relationship between TMD subtypes and severity with primary headaches in a controlled clinical study. ⋯ TMD, TMD subtypes, and TMD severity are independently associated with specific headache syndromes and with headache frequency. This differential association suggests that the presence of central facilitation of nociceptive inputs may be of importance, as positive association was observed only when muscular TMD pain was involved.
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One of the most important determinants of the individual pain experience is pain catastrophizing, reflecting an excessively negative cognitive and emotional orientation toward pain. Its assessment by standard questionnaires, which ask participants to reflect on idiosyncratic past painful experiences, is important. It is currently not known whether different types of pain differently shape pain catastrophizing. Furthermore, as the regulation of emotions changes during the life span, age may affect pain catastrophizing, as well. ⋯ This study indicates that for day-to-day pain, catastrophizing significantly depends on pain type. The results suggest the use of pain-type-specific instructions for catastrophizing questionnaires because it may lead to better prediction of clinically relevant pain characteristics, such as pain intensity. Furthermore, pain catastrophizing seems to change during the life span, with a higher engagement of emotional versus sensory pain processing in younger compared with older adults.