The Clinical journal of pain
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Randomized Controlled Trial
Rapid local anesthesia in humans using minimally invasive microneedles.
This study tested the hypothesis that minimally invasive microneedles cause less pain during injection of lidocaine, but induce local anesthesia in humans with the same rapid onset and efficacy as intradermal lidocaine injection using hypodermic needles. ⋯ This study demonstrates for the first time that microneedle-based lidocaine injection is as rapid and as effective as hypodermic injection in inducing local anesthesia while resulting in significantly less pain during injection.
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Randomized Controlled Trial
EMG assessment of analgesia in treatment of posttonsillectomy pain: random allocation, preliminary report.
Surface electromyographic (sEMG) study of posttonsillectomy swallow-evoked muscular reactions was performed to assess validity of EMG in evaluation of analgesic drugs. ⋯ sEMG might be used for quantitative evaluation of analgesic drugs by assessment of muscular reactions to pain and to analgesia. This method might add quantitative justification to the information obtained by VAS pain testing and clinical data.
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Is pain catastrophizing a stable trait or dynamic state in patients scheduled for knee arthroplasty?
This study sought to clarify whether pain-related catastrophizing is a response that varies given a specific situational circumstance (state) or an enduring personality construct (trait). ⋯ These data provide preliminary support for the notion that pain-related catastrophizing is a dynamic construct that is related to pain intensity.
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The postthoracotomy pain syndrome (PTPS) has a prevalence of 30% to 40%. Although intraoperative nerve damage during thoracotomy has been demonstrated, it has not been clearly linked to PTPS and detailed quantitative sensory characterization data have so far not been presented, comparing PTPS and pain-free patients. ⋯ Neurophysiological assessments indicate nerve injury to be common in pain and pain-free patients after thoracotomy. The combination of increased thresholds together with hyperesthesia, suggests consequences of nerve injury to be more pronounced in PTPS patients.