Revista brasileira de anestesiologia
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Rev Bras Anestesiol · Jun 2003
[Processed electroencephalogram in children anesthetized with sevoflurane. Is it feasible?].
EEG-derived bispectral index (BIS), has been indicated as a major substrate for measuring hypnotic effects of anesthetic drugs. However, there are only limited data on the use of EEG in anesthetized children. This study aimed at evaluating changes in BIS, SEF95%, relative delta band frequency amplitude (d%) and suppression rate (SR) in children, correlating these changes with sevoflurane pharmacodynamic variables (EC and EC/MAC) as compared to adults. ⋯ Unlike d%, the variations of which seem brain maturation-related, BIS and SEF95% may be used to monitor sevofluranes anesthetic depth in children aged 0 to 12 years, observing the parameters suggested for adults.
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Rev Bras Anestesiol · Jun 2003
[Comparative study of intercostal and interpleural block for post-cholecystectomy analgesia].
Postoperative analgesia is a wish of all surgical patients and has been used by most anesthesiologists. In addition to opioids, local anesthetic agents have been employed for peripheral and central blocks. The purpose of this study was to evaluate and to compare intercostal and interpleural blocks for post-cholecystectomy analgesia. ⋯ We concluded that both techniques were effective in promoting post-cholecystectomy analgesia, but interpleural block was easier to perform.
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Rev Bras Anestesiol · Jun 2003
[Spinal anesthesia for cesarean section with 0.5% isobaric bupivacaine plus fentanyl and morphine: prospective study with different volumes].
Spinal block for cesarean section was described few years after the first report of spinal anesthesia by Bier in 1899. It was not until the last 5 years that spinal anesthesia has become the most frequent anesthetic method for cesarean section at our hospital. This prospective study aimed at evaluating 0.5% spinal isobaric bupivacaine for cesarean section, injected after fentanyl and morphine, in the lateral position, and at correlating the incidence of hemodynamic changes and cephalad spread with different volumes. ⋯ Results of this study confirm that 0.5% isobaric bupivacaine, following fentanyl and morphine injected with separate syringes and in the lateral position, in doses of 2.5, 3 and 4 ml provides a fast and effective anesthesia for cesarean section.
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Rev Bras Anestesiol · Jun 2003
[Peripheral nerve stimulator for femoral nerve block. Is it really necessary?].
There are several methods to locate the femoral nerve in the perivascular inguinal space, being the most common the use of a peripheral nerve stimulator. This study aimed at evaluating femoral nerve block performed with peripheral nerve stimulator as compared to the loss of resistance to air technique, both by single injection or with catheter insertion. ⋯ Whereas the peripheral nerve stimulator is more widely used in the inguinal region, our study has shown that the loss of resistance to air technique is an effective and feasible alternative.
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Rev Bras Anestesiol · Apr 2003
[Dexmedetomidine/propofol association for plastic surgery sedation during local anesthesia.].
Dexmedetomidine is a new alpha2-adrenergic receptor agonist with potentially useful characteristics for anesthesia. This comparative study aimed at evaluating the effects of dexmedetomidine on propofol requirements and cardiovascular/respiratory stability during plastic surgery sedation under local anesthesia. ⋯ Dexmedetomidine/propofol association for sedation is safe and has the following advantages: decrease in propofol requirements, cardiovascular stability, good perioperative bleeding control, lack of significant effects on ventilation.