Journal of anesthesia
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Journal of anesthesia · Dec 2018
Randomized Controlled TrialHigh-dose intraoperative remifentanil infusion increases early postoperative analgesic consumption: a prospective, randomized, double-blind controlled study.
The purpose of this study was to determine whether intraoperative infusion of remifentanil induces acute tolerance to opioids, and compare the postoperative pain and opioid consumption by the effect site concentrations of remifentanil. ⋯ Intraoperative infusion of remifentanil with 12 ng/ml of effect site concentration in patients undergoing gastrectomy increases early postoperative fentanyl requirement. Acute opioid tolerance would be developed by higher concentration of remifentanil than dosage of common anesthetic practice.
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Journal of anesthesia · Dec 2018
Dexmedetomidine preserves the endothelial glycocalyx and improves survival in a rat heatstroke model.
Heatstroke causes systemic inflammation, followed by vascular endothelial damage. The normal vascular endothelium is coated by endothelial glycocalyx (EGCX). Dexmedetomidine (DEX) has an anti-inflammatory effect, but there has been little investigation on the influence of heatstroke on EGCX and the effect of DEX on this condition. Therefore, we examined whether EGCX was disrupted in heatstroke and if DEX improved survival and preserves EGCX. ⋯ EGCX was disrupted in heatstroke, and DEX improved survival and preserved EGCX.
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Journal of anesthesia · Dec 2018
Randomized Controlled TrialImpact of non-invasive continuous blood pressure monitoring on maternal hypotension during cesarean delivery: a randomized-controlled study.
This study aimed to investigate the efficacy of the ClearSight™ system (Edwards Lifesciences, Irvine, CA) for reducing the incidence of hypotension compared with the traditional oscillometric blood pressure monitoring in cesarean delivery under spinal anesthesia. ⋯ The accuracy and trending ability of the ClearSight™ system for blood pressure measurement was clinically acceptable in cesarean delivery under spinal anesthesia, leading to reductions in maternal hypotension and nausea.
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Journal of anesthesia · Dec 2018
Angiotensin II-mediated suppression of synaptic proteins in mouse hippocampal neuronal HT22 cell was inhibited by propofol: role of calcium signaling pathway.
Angiotensin II (Ang II) has been shown to be involved in neurological disorders. Propofol demonstrated neuroprotective effects in neurons. ⋯ Ang II, via AT1 receptor, induced oxidative stress and reduced the expression of synapsin I and PSD95 in HT22 cells. Propofol may increase synapsin I and PSD95 expression by inhibiting oxidative stress and stimulating calcium signaling pathway.
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Journal of anesthesia · Dec 2018
Association between intraoperative phenylephrine administration and umbilical artery pH in women with hypertensive disorders of pregnancy: a retrospective cohort study.
In healthy pregnant women undergoing Cesarean section, treatment of post-spinal hypotension (PSH) with phenylephrine is reportedly more efficacious than ephedrine in preventing a decline in umbilical artery pH (UApH), which is an indicator of fetal acidosis. However, phenylephrine has the potential to reduce placental blood flow and consequently decrease UApH in women who develop hypertensive disorders of pregnancy (HDP), due to decreased cardiac function and placental vascular abnormalities. We aimed to verify the association between decreased UApH and phenylephrine administered before delivery to treat PSH in women with HDP. ⋯ Intraoperative phenylephrine administration to treat PSH in women with HDP was not associated with decreased UApH.