Masui. The Japanese journal of anesthesiology
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Randomized Controlled Trial
[Effect of pentazocine on the bispectral index during nitrous oxide-sevoflurane anesthesia].
The effect of pentazocine on the bispectral index (BIS) has not been reported. In this study, we have examined whether pentazocine alters the bispectral index during nitrous oxide-sevoflurane anesthesia. ⋯ We observed that intravenous pentazocine caused a significant increase in BIS under nitrous oxide-sevoflurane anesthesia. The depth of sedation should be assessed carefully using a bispectral index monitor when pentazocine is used together.
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Randomized Controlled Trial Comparative Study
[Effect of different perioperative analgesic methods on postoperative cognitive dysfunction in elderly patients undergoing upper abdominal surgery].
We investigated whether the early postoperative cognitive dysfunction (POCD) was affected by different perioperative analgesia methods using intravenous remifentanil or epidural ropivacaine in the elderly undergoing major upper abdominal surgery. ⋯ Perioperative analgesia using intravenous remifentanil and epidural ropivacaine showed no significant difference in the incidence of early POCD after upper abdominal surgery in elderly patients.
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Randomized Controlled Trial Comparative Study
[Influence of tidal volume on functional residual capacity during general anesthesia].
Ventilation with lower tidal volume improves outcome in acute respiratory distress syndrome (ARDS). However, it is questionable if ventilation strategy using lower tidal volumes created for patients with ARDS can be transferred to healthy patients undergoing general anesthesia. We assessed the effects of ventilation with lower tidal volumes and conventional tidal volumes on functional residual capacity (FRC) and Pa(O2)/FI(O2) (P/F) ratio in patients undergoing general anesthesia for upper abdominal surgery. ⋯ Lower tidal volumes are better than conventional tidal volumes in view of airway pressure and lung protective strategy during general anesthesia.