Revista brasileira de anestesiologia
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Rev Bras Anestesiol · Mar 2018
Randomized Controlled Trial[Subcostal transversus abdominis plane block can improve analgesia after laparoscopic cholecystectomy].
After laparoscopic cholecystectomy, patients have moderate pain in the early postoperative period. Some studies shown beneficial effects of subcostal transversus abdominis plane block on reducing this pain. Our goal was to investigate influence of subcostal transversus abdominis plane block on postoperative pain scores and opioid consumption. ⋯ Our results show that subcostal transversus abdominis plane block can provide superior postoperative analgesia and reduction in opioid requirements after laparoscopic cholecystectomy.
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Rev Bras Anestesiol · Mar 2018
Randomized Controlled Trial Comparative Study[Efficacy of preoxygenation using tidal volume breathing: a comparison of Mapleson A, Bain's and Circle system].
Efficacy of preoxygenation depends upon inspired oxygen concentration, its flow rate, breathing system configuration and patient characteristics. We hypothesized that in actual clinical scenario, where breathing circuit is not primed with 100% oxygen, patients may need more time to achieve EtO2≥90%, and this duration may be different among various breathing systems. We thus studied the efficacy of preoxygenation using unprimed Mapleson A, Bain's and Circle system with tidal volume breathing at oxygen flow rates of 5L.min-1 and 10L.min-1. ⋯ With spontaneous normal tidal volume breathing at oxygen flow rate of 5L.min-1, Mapleson A can optimally preoxygenate patients within 3min while Bain's and Circle system require more time. However at O2 flow rate of 10L.min-1 all the three breathing systems are capable of optimally preoxygenating the patients in less than 3min.