Anesthesiology
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Randomized Controlled Trial Comparative Study
Magnetic resonance imaging analysis of the spread of local anesthetic solution after ultrasound-guided lateral thoracic paravertebral blockade: a volunteer study.
This study was designed to examine the spread of local anesthetic (LA) via magnetic resonance imaging after a standardized ultrasound-guided thoracic paravertebral blockade. ⋯ Although the spread of LA was reproducible, the anesthetic effect was unpredictable, even with a standardized ultrasound-guided technique in volunteers. While it can be assumed that approximately 4 vertebral levels are covered by 20 ml LA, the somatic distribution of the thoracic paravertebral blockade remains unpredictable. In a significant percentage, the LA distributes into the epidural space, prevertebral, or to the contralateral side.
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Randomized Controlled Trial Comparative Study
Retrograde light-guided laryngoscopy for tracheal intubation: clinical practice and comparison with conventional direct laryngoscopy.
Tracheal intubation with conventional laryngoscopy requires many trials until beginners are sufficiently skilled in intubating patients safely. To facilitate intubation, the authors used retrograde light-guided laryngoscopy (RLGL) and compared its feasibility with conventional direct laryngoscopy (DL). ⋯ RLGL is an alternative intubation technique. In our study, it enables beginners to intubate patients more successfully and quickly than conventional DL.
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Randomized Controlled Trial Comparative Study
Postoperative recovery with bispectral index versus anesthetic concentration-guided protocols.
Use of the bispectral index (BIS) monitor has been suggested to decrease excessive anesthetic drug administration, leading to improved recovery from general anesthesia. The purpose of this substudy of the B-Unaware and BAG-RECALL trials was to assess whether a BIS-based anesthetic protocol was superior to an end-tidal anesthetic concentration-based protocol in decreasing recovery time and postoperative complications. ⋯ In patients at high risk for awareness, the BIS-guided protocol is not superior to an anesthetic concentration-guided protocol in time needed for postoperative recovery or in the incidences of common postoperative complications.