[Racemic 0.25% bupivacaine and 50% enantiomeric excess (S75-R25) 0.25% bupivacaine associated to fentanyl for labor analgesia with patients ambulation. Comparative study.].

Background And Objectives: Clinical studies with levogyrous enantiomers of local anesthetics have shown better safety due to lower cardiotoxicity. Parturients ambulation during labor may be able to shorten it. This study aimed at comparing anesthetic quality and maternal and fetal repercussions, as well as patients ambulation and spontaneous micturition ability with continuous epidural racemic or 50% enantiomeric excess (S75-R25) 0.

[Comparative study between 0.5% bupivacaine, 0.5% enantiomeric mixture of bupivacaine (S75-R25) and 0.75% ropivacaine, all associated to fentanyl, for epidural cesarean section anesthesia.].

Background And Objectives: Clinical trials with local anesthetic levo-enantiomers have shown higher safety due to lower cardiotoxicity. This study aimed at evaluating quality of anesthesia and maternal/fetal repercussions of 0.5% bupivacaine, enantiomeric 0.

[Evaluation of maternal acid-base status after different doses of spinal sufentanil for cesarean section and its effects on the neonates.].

Background And Objectives: Spinal sufentanil in obstetric anesthesia promotes immediate pain relief, improves anesthesia quality and prolongs postoperative analgesia, its major side effect being respiratory depression. This study aimed at evaluating maternal acid-base status after different doses of spinal sufentanil associated to hyperbaric bupivacaine for cesarean section, and its effects on neonates' vitality.

Methods: Participated in this study 40 full term pregnant women, physical status I (ASA), aged 17 to 35 years, who were submitted to elective cesarean section under spinal anesthesia.