Articles: cations.
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Despite the frequent use of ropivacaine and bupivacaine, there is limited guidance on redosing of these medications following an initial bolus. Intermittent redosing is a clinical practice in the setting of nerve catheters, often utilizing large doses. Comparatively, theoretical elimination rates are available from pharmacokinetic studies, providing estimates on total body content of these drugs. We hypothesized that published redosing of bupivacaine and ropivacaine in clinical literature comported with safe elimination of the drugs based on pharmacokinetic studies. ⋯ Clinically reported redosing of bupivacaine and ropivacaine in the published literature reflect the slowest pharmacokinetic elimination based on human studies. The combined data without evidence of toxicity permit us to make practical recommendations about safe redosing of these agents.
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To test the hypothesis that peripheral nerve block (PNB) use might be associated with improved perioperative outcomes following major surgery. ⋯ Use of PNB was associated with shortened length of hospital stay and reduced major complications in older patients after major non-cardiac thoracic and abdominal surgery, possibly due to improved analgesia.
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Conditioned pain modulation (CPM) is assumed to capture endogenous pain modulation. In standard CPM designs, the evaluation of a painful test stimulus (TS) (baseline) is followed by a second evaluation of the TS during/after application of a painful conditioning stimulus (CS) (treatment). However, these standard CPM within designs (baseline always preceding treatment) do not control for order effects, which might help to distinguish specific CPM inhibition from general habituation. ⋯ Only the standard CPM order (baseline before treatment) yielded robust pain inhibition effects, whereas the reversed order (treatment before baseline) led to no modulation or seeming pain facilitation. Because control for order effects is otherwise mandatory in within designs, it is surprising that it has been neglected in standard CPM protocols. Finding pain inhibition only in the standard CPM order suggests that CPM inhibition is at least partially confounded with habituation.
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Emergency delirium (ED) is a common and serious postoperative complication especially after pediatric surgery. Quadratus lumborum block (QLB) are critical components of the multimodal, opioid-sparing analgesia regimens, which provide effective analgesia, reduce opioid consumption, and attenuate surgical stress response. Therefore, this trial was designed to validate the hypothesis that the adjunctive use of QLB reduces the incidence of ED after laparoscopic surgery in children. ⋯ General anesthesia combined with QLB can significantly reduce the incidence of ED, shorten the extubation time and PACU residence time, and improve the quality of resuscitation.
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Anastomotic conversions and revisions remain crucial in addressing complications or sub-optimal outcomes following primary bariatric procedures. Preoperative malnutrition, proxied by hypoalbuminemia, has traditionally been considered a risk factor for postoperative morbidity. This study investigates the validity of this association in revisional and conversion metabolic/bariatric surgery (MBS). ⋯ Following adjustment for confounding patient factors, hypoalbuminemia alone did not arise as an independent predictive factor for the 30-day major complications such as leak, reoperation, or re-intervention after revisional and anastomotic conversion MBS, although there maybe increase in SSI and readmission rates.