PMC3420421_01
Preoperative axial and coronal MRI images of the patient's brain. Gadolinium enhancement demonstrates a large mass in the left cerebello-pontine angle.
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fig1
Brain imaging identified a left CPA mass extending caudally into the jugular foramen (Figure 1).
PMC3420421_02
Screen shot of intraoperative ventilator parameters and measurements. The image depicts fresh gas flows, expired and inspired concentrations of isoflurane, airway pressures and flows, and expired CO2 tracings. Tidal volume was set at approximately 6 mL/kg. The anesthesia machine was an Apollo from Draeger (Pittsburgh, PA).
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fig2
EtCO2 was controlled in the range of 33-37 without capnographic evidence of airway obstruction (Figure 2).
PMC3420421_03