Journal of clinical anesthesia
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Randomized Controlled Trial Comparative Study Clinical Trial
Compound A concentration in the circle absorber system during low-flow sevoflurane anesthesia: comparison of Drägersorb Free, Amsorb, and Sodasorb II.
To determine compound A concentrations in a low-flow circuit containing Drägersorb Free (Dräger, Lübeck, Germany), Amsorb (Armstrong, Coleraine, Northern Ireland), and Sodasorb II (W. R. Grace, Lexington, MA). ⋯ Because compound A concentrations in the circuit with Drägersorb Free and Amsorb were negligible, sevoflurane can be used at a fresh gas flow of 1 L/min with these two absorbents.
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Randomized Controlled Trial Comparative Study Clinical Trial
Bispectral monitoring during vital capacity rapid inhalation induction with sevoflurane.
To evaluate the variables of bispectral index (BIS) values during vital capacity rapid inhalation induction (VCRII) with sevoflurane. ⋯ VCRII with a high concentration of sevoflurane provided adequate BIS values during induction, suggesting that it may allow smoother transition from anesthesia induction to maintenance, and also maintain an adequate hypnotic level in readiness for certain stimuli such as laryngoscopy and tracheal intubation.
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Case Reports
Acoustic reflectometry detection of an endobronchial intubation in a patient with equal breath sounds.
Acoustic reflectometry can be used to distinguish between a tracheal and an esophageal intubation based on an area-distance profile. In a patient undergoing laparoscopic surgery, acoustic reflectometry was used to detect a bronchoscopically confirmed endobronchial intubation in the presence of equal bilateral breath sounds. An in vitro simulation suggests that in an endobronchial intubation, in the presence of a space leak between the tube cuff and the bronchus, an acoustic pressure disturbance can be transmitted to the opposite lung (causing equal breath sounds), without significant bulk airway flow (causing inadequate ventilation of the opposite lung).