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 CO2 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 CO2 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.
- Electroconvulsive therapy
- Equipment and supplies: bag-valve-mask ventilation device
- Mapleson D circuit
- Mask ventilation
ASJC Scopus subject areas
- Anesthesiology and Pain Medicine