Anesthesia and analgesia
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Anesthesia and analgesia · Aug 2015
Randomized Controlled Trial Multicenter Study Comparative StudyA Comparison of Differences Between the Systemic Pharmacokinetics of Levobupivacaine and Ropivacaine During Continuous Epidural Infusion: A Prospective, Randomized, Multicenter, Double-Blind Controlled Trial.
Epidural infusion of levobupivacaine and ropivacaine provides adequate postoperative pain management by minimizing side effects related to IV opioids and improving patient outcome. The safety profile of different drugs can be better estimated by comparing their pharmacokinetic profiles than by considering their objective side effects. Because levobupivacaine and ropivacaine have different pharmacokinetic properties, our aim was to investigate whether there is a difference in the pharmacokinetic variability of the 2 drugs in a homogeneous population undergoing continuous epidural infusion. This double-blind, multicenter, randomized, controlled trial study was designed to compare the pharmacokinetics of continuous thoracic epidural infusion of levobupivacaine 0.125% or ropivacaine 0.2% for postoperative pain management in adult patients who had undergone major abdominal, urological, or gynecological surgery. This study is focused on the evaluation of the coefficient of variation (CV) to assess the equivalence in the systemic exposure and interindividual variability between levobupivacaine and ropivacaine and, therefore, the possible differences in the predictability of the plasmatic concentrations of the 2 drugs during thoracic epidural infusion. ⋯ Considering the CV, the interindividual variability of plasma concentration for levobupivacaine and ropivacaine is equivalent after thoracic epidural infusion in adults. We found a reduction in clearance of ropivacaine depending on patient age, but this finding could be the result of some limitations of our study. The steady-state concentration was not reached during the 48-hour infusion and the behavior of plasma concentrations of ropivacaine and levobupivacaine during continuous infusions lasting more than 48 hours remains to be investigated, because they could reach toxic levels. Finally, no differences in the clinical efficacy or in the incidence of adverse effects between groups were found for either local anesthetic.
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Anesthesia and analgesia · Aug 2015
Review Case ReportsExpecting the Unexpected: Perspectives on Stillbirth and Late Termination of Pregnancy for Fetal Anomalies.
Expectant mothers and their spouses spend months preparing to eagerly welcome their much-anticipated baby into their family. Stillbirth or a diagnosis of life-limiting fetal anomalies comes as a devastating turn of events for affected women and their families. ⋯ Familiarity with this emerging knowledge better prepares the obstetric anesthesiologist to deliver effective and empathic care. Encounters with women experiencing stillbirth and life-limiting fetal anomalies prompted this review of current evidence regarding parturient' perspectives on their care as they set out on the road to recovery.