Articles: function.
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Indifference or hypersensitivity? Solving the riddle of the pain profile in individuals with autism.
Excitatory-inhibitory (E/I) imbalance is a mechanism that underlies autism spectrum disorder, but it is not systematically tested for pain processing. We hypothesized that the pain modulation profile (PMP) in autistic individuals is characterized by less efficient inhibitory processes together with a facilitative state, indicative of a pronociceptive PMP. Fifty-two adults diagnosed with autism and 52 healthy subjects, age matched and sex matched, underwent quantitative sensory testing to assess the function of the (1) pain facilitatory responses to phasic, repetitive, and tonic heat pain stimuli and (2) pain inhibitory processes of habituation and conditioned pain modulation. ⋯ In conclusion, in line with the E/I imbalance mechanism, autism is associated with a pronociceptive PMP expressed by hypersensitivity to daily stimuli and experimental pain and less-efficient inhibition of tonic pain. The latter is an experimental pain model resembling clinical pain. These results challenge the widely held belief that individuals with autism are indifferent to pain and should raise caregivers' awareness of pain sensitivity in autism.
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Health care systems need better strategies to identify older adults at risk for costly care to select target populations for interventions to reduce health care burden. ⋯ National Institutes of Health.
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Anesthesia and analgesia · Apr 2023
Influence of Different Sevoflurane Concentrations on Postoperative Cognitive Function in Aged Rats.
Postoperative cognitive dysfunction may be associated with neuroinflammation, and sevoflurane suppresses surgery-induced inflammation. We hypothesized that low concentrations of sevoflurane would result in more impaired postoperative cognitive function compared to high concentrations. ⋯ We found that low concentrations of sevoflurane prolonged the swimming latency of the MWM compared to high concentrations and reduced intact CA1 hippocampal neurons in aged rats. These results suggest that low-concentration sevoflurane anesthesia may be more detrimental than high concentration for spatial cognitive function and postoperative impairment of hippocampal CA1 cells in aged rats.
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The anterior cingulate cortex (ACC) processes the affective component of pain, whereas the primary somatosensory cortex (S1) is involved in its sensory-discriminative component. Injection of morphine in the ACC has been reported to be analgesic, and endogenous opioids in this area are required for pain relief. Mu opioid receptors (MORs) are expressed in both ACC and S1; however, the identity of MOR-expressing cortical neurons remains unknown. ⋯ Our results suggest a differential contribution of MOR-mediated modulation to ACC and S1 outputs. We also found that females had a greater density of MOR+ neurons compared with males in both areas. In summary, we conclude that MOR-dependent opioidergic signaling in the cortex displays sexual dimorphisms and likely evolved to meet the distinct function of pain-processing circuits in limbic and sensory cortical areas.
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Critical care nurse · Apr 2023
Implementing a Unit-Based Alarm Management Bundle for Critical Care Nurses.
Clinical alarms are designed to signal an unsatisfactory patient physiological state and alert staff members to malfunctioning medical equipment. Alarm desensitization and fatigue can occur when clinicians are exposed to an overwhelming number of clinical alarms, particularly nonactionable alarms. ⋯ The Joint Commission's 2022 goal of improving clinical alarm safety remains a top priority nationwide. Implementation of the CEASE alarm management bundle was effective in reducing surgical intensive care unit nurses' alarm fatigue and improving their alarm management practices.