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- W2007657446 abstract "ObjectiveMost fetoscopies are performed under (loco)regional anesthesia, which does not provide fetal immobilization. Transplacental administration of sedatives may achieve this and comfort the mother. Diazepam (DZP) induces profound maternal sedation and incomplete fetal immobilization. We compared the efficacy of I.V. remifentanil (REMI), a short acting opioid (umbilical vein/maternal artery ratio 0.88) to that of DZP for maternal sedation and fetal immobilization.Study designSingle center randomized double blind trial with 54 consecutive women undergoing fetoscopic cord occlusion (n = 12) or laser surgery for TTTS (n = 42). Following CSE-anesthesia, incremental doses DZP (bolus 5 mg, 5 mg 10 min later and 2.5 mg top ups) or continuous infusion REMI (0.1 μg/kg/min followed by 0.025 bolus top ups). Patients, gynecologists and attending anesthesiologist were blinded to the sedative used. Maternal sedation (observer alertness score-OAS, need for additional medication), hemodynamics, side-effects as well as fetal hemodynamics and immobilization (Visual Analog Score by ultrasonographer and surgeon, later review of videotape by third assessor) were evaluated prior, during and for 60 min after surgery. Statistics were by ANOVA testing, and chi-square Fisher exact test for categorical data. Data are presented as mean ± Standard Deviation, median and interquartile range and percentage of group total.ResultsFour fetuses were excluded because of absence of fetal movements at baseline. DZP (mean = 14.5 ± 4.8 mg) resulted in deeper maternal sedation without respiratory depression. REMI (0.115 ± 0.020 μg/kg/min) produced adequate maternal sedation with mild but clinically irrelevant respiratory depression, except in one patient with OAS <4. Fetal immobilizatin occurred faster and was better but on stimulation the fetus was easily awakened. This resulted in more often good surgical conditions (32 % DZP, 92 % REMI), shorter operation times and mothers being less sedated afterwards. Similar doses and number of top ups of ephedrine and phenylephrine were required in both groups.ConclusionREMI provides excellent fetal immobilization and maternal sedation and is immediately reversible. This method of transplacental sedation could also be applied during other fetal procedures without direct fetal pain stimulus (eg MRI). ObjectiveMost fetoscopies are performed under (loco)regional anesthesia, which does not provide fetal immobilization. Transplacental administration of sedatives may achieve this and comfort the mother. Diazepam (DZP) induces profound maternal sedation and incomplete fetal immobilization. We compared the efficacy of I.V. remifentanil (REMI), a short acting opioid (umbilical vein/maternal artery ratio 0.88) to that of DZP for maternal sedation and fetal immobilization. Most fetoscopies are performed under (loco)regional anesthesia, which does not provide fetal immobilization. Transplacental administration of sedatives may achieve this and comfort the mother. Diazepam (DZP) induces profound maternal sedation and incomplete fetal immobilization. We compared the efficacy of I.V. remifentanil (REMI), a short acting opioid (umbilical vein/maternal artery ratio 0.88) to that of DZP for maternal sedation and fetal immobilization. Study designSingle center randomized double blind trial with 54 consecutive women undergoing fetoscopic cord occlusion (n = 12) or laser surgery for TTTS (n = 42). Following CSE-anesthesia, incremental doses DZP (bolus 5 mg, 5 mg 10 min later and 2.5 mg top ups) or continuous infusion REMI (0.1 μg/kg/min followed by 0.025 bolus top ups). Patients, gynecologists and attending anesthesiologist were blinded to the sedative used. Maternal sedation (observer alertness score-OAS, need for additional medication), hemodynamics, side-effects as well as fetal hemodynamics and immobilization (Visual Analog Score by ultrasonographer and surgeon, later review of videotape by third assessor) were evaluated prior, during and for 60 min after surgery. Statistics were by ANOVA testing, and chi-square Fisher exact test for categorical data. Data are presented as mean ± Standard Deviation, median and interquartile range and percentage of group total. Single center randomized double blind trial with 54 consecutive women undergoing fetoscopic cord occlusion (n = 12) or laser surgery for TTTS (n = 42). Following CSE-anesthesia, incremental doses DZP (bolus 5 mg, 5 mg 10 min later and 2.5 mg top ups) or continuous infusion REMI (0.1 μg/kg/min followed by 0.025 bolus top ups). Patients, gynecologists and attending anesthesiologist were blinded to the sedative used. Maternal sedation (observer alertness score-OAS, need for additional medication), hemodynamics, side-effects as well as fetal hemodynamics and immobilization (Visual Analog Score by ultrasonographer and surgeon, later review of videotape by third assessor) were evaluated prior, during and for 60 min after surgery. Statistics were by ANOVA testing, and chi-square Fisher exact test for categorical data. Data are presented as mean ± Standard Deviation, median and interquartile range and percentage of group total. ResultsFour fetuses were excluded because of absence of fetal movements at baseline. DZP (mean = 14.5 ± 4.8 mg) resulted in deeper maternal sedation without respiratory depression. REMI (0.115 ± 0.020 μg/kg/min) produced adequate maternal sedation with mild but clinically irrelevant respiratory depression, except in one patient with OAS <4. Fetal immobilizatin occurred faster and was better but on stimulation the fetus was easily awakened. This resulted in more often good surgical conditions (32 % DZP, 92 % REMI), shorter operation times and mothers being less sedated afterwards. Similar doses and number of top ups of ephedrine and phenylephrine were required in both groups. Four fetuses were excluded because of absence of fetal movements at baseline. DZP (mean = 14.5 ± 4.8 mg) resulted in deeper maternal sedation without respiratory depression. REMI (0.115 ± 0.020 μg/kg/min) produced adequate maternal sedation with mild but clinically irrelevant respiratory depression, except in one patient with OAS <4. Fetal immobilizatin occurred faster and was better but on stimulation the fetus was easily awakened. This resulted in more often good surgical conditions (32 % DZP, 92 % REMI), shorter operation times and mothers being less sedated afterwards. Similar doses and number of top ups of ephedrine and phenylephrine were required in both groups. ConclusionREMI provides excellent fetal immobilization and maternal sedation and is immediately reversible. This method of transplacental sedation could also be applied during other fetal procedures without direct fetal pain stimulus (eg MRI). REMI provides excellent fetal immobilization and maternal sedation and is immediately reversible. This method of transplacental sedation could also be applied during other fetal procedures without direct fetal pain stimulus (eg MRI)." @default.
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- W2007657446 title "Randomized double blind comparison of remifentanil and diazepam for fetal immobilization and maternal sedation during fetoscopic surgery" @default.
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