Study Objective: To compare the Mapleson D circuit and the bag-valve-mask device for mask ventilation of patients undergoing electroconvulsive therapy (ECT).
Design: Cross-over study.
Setting: Single-center academic medical center.
Patients: 18 patients undergoing ECT for major depressive disorder.
Interventions: Patients were randomized to undergo mask ventilation by the Mapleson D circuit or the bag-valve-mask device.
Measurements: End-tidal CO(2), seizure duration, and airway pressure values were recorded.
Main Results: End-tidal CO(2) was significantly lower with the bag-valve-mask device. When compared with the bag-valve-mask device, ventilation with the Mapleson circuit resulted in rebreathing of CO(2) in nearly all patients, shorter expiratory time, and lower pressure ramp slope.
Conclusions: Hypocapnia was not associated with longer seizures, and the user-device interaction might affect device performance.
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| http://dx.doi.org/10.1016/j.jclinane.2009.10.015 | DOI Listing |
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