Articles: analgesia.
-
This study was designed to evaluate the role of the amygdala, particularly its central nucleus, in the induction of analgesia elicited by environmental challenges. Rats with large, radiofrequency lesions centered in the central nucleus were found to display significantly attenuated analgesic responses to three different challenges: cat exposure, acute footshock, and re-exposure to an environment associated with footshock. ⋯ Moreover, the finding that amygdala lesions significantly reduced the analgesia elicited by a non-noxious unconditional stimulus (cat exposure) strongly suggests that these lesions disrupt the expression of analgesia rather than producing a learning impairment. And finally, the findings of this study support the suggestion that fear-elicited analgesia is triggered by activation of a projection from amygdala to periaqueductal gray which forms one component of an integrated 'defensive behavioral system.'
-
Review Comparative Study
Effect of analgesic treatment on the physiological consequences of acute pain.
Physiological responses to acute pain are described, and the effects of different analgesic techniques on these responses are discussed. The body's response to acute pain can cause adverse physiological effects. Pain can impede the return of normal pulmonary function, modify certain aspects of the stress response to injury, and alter hemodynamic values and cardiovascular function. ⋯ Adequate analgesia through the use of local anesthetics and narcotics postoperatively generally results in improved cardiovascular function, decreased pulmonary morbidity and mortality, earlier ambulation, and decreased likelihood of deep vein thrombosis. Some data suggest that improved patient outcome occurs with adequate analgesia. Block of afferent and efferent neural pathways by local anesthetics seems to be the most effective analgesic modality in lessening the physiologic response to pain and injury.
-
Ugeskrift for laeger · Jun 1994
Randomized Controlled Trial Clinical Trial[Inguinal funicular block in vasectomy].
The analgesic efficacy of inguinal funicular block with 10 ml carbocaine 1% as a supplement to local infiltration analgesia of the vas deferens was investigated in patients undergoing vasectomy. Pain/discomfort during vasectomy and on the first and third day postoperatively were investigated using a questionnaire. ⋯ There was significantly less intraoperative pain on the side of the active inguinal funicular block (p < 0.0001), but no significant differences were found at the first and third postoperative day (p = 1.16-1.19). Inguinal funicular block can be recommended as a supplement to the usual use of local infiltration analgesia of the vas deferens.
-
Randomized Controlled Trial Clinical Trial
Analgesic effects of intraarticular bupivacaine after day-case arthroscopy.
A blind, prospective, randomized, controlled trial was conducted to assess the analgesic properties of intraarticular bupivacaine after day-case arthroscopy. Forty-eight patients undergoing routine arthroscopy were randomly allocated to receive 10 ml of 0.5% bupivacaine or 0.9% saline into the joint at the end of the procedure. The analgesic effects were assessed by visual analogue scales at discharge, on going to bed, and the following morning. Significant reduction in reported pain was found in the treatment groups on leaving the hospital and later the same evening, although no benefit was found the following day.
-
Am. J. Obstet. Gynecol. · Jun 1994
Clinical TrialIntrathecal narcotics for obstetric analgesia in a community hospital.
Our objective was to establish whether intrathecal narcotics for obstetric analgesia offer an adequate and cost-effective alternative to epidural analgesia with minimal side effects in our small, semirural community hospital with limited anesthesia coverage. ⋯ In our hospital with limited anesthesia services intrathecal narcotics offer excellent labor pain relief with manageable side effects and without adverse obstetric outcome.