Abstract
Ventilation with large tidal volumes (V T), greater than 10 ml/kg of predicted body weight (PBW), is associated with worse outcomes in critically ill and surgical patients. We hypothesized that the availability of quick reference cards with proposed V T ranges specific to gender and different heights would reduce the intraoperative use of large V T during prolonged abdominal surgery. We compared retrospectively the incidence of median V T used during prolonged (≥4-h-long) abdominal surgery before (“before”) and after (“after”) the quick reference V T cards were made available in all anesthesia machines in operating rooms of a single academic US medical center. We evaluated the effect of the intervention on the primary outcome while adjusting for previously identified risk factors of large V T use: female gender, obesity (body mass index, BMI > 30), and short height (< 165 cm). The frequency of V T > 10 ml/kg PBW was 15.1% in the before group and 4.3% in the after group (p < 0.001). The frequency of large V T used during abdominal surgery was significantly decreased after the intervention even after adjusting for female gender, obesity or short height [adjOR 0.11 (95% CI 0.04–0.30)]. Our quick reference V T cards significantly reduced the frequency of large V T use during abdominal surgery.
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Acknowledgements
The authors thank Ken Bullard BS, at the University of Colorado School of Medicine, for his technical assistance.
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This work was supported by the 2010 University of Colorado School of Medicine Department of Anesthesiology Seed Grant (2010, AFB), the 2012 Foundation for Anesthesia Education & Research Clinical/Translational-Mentored Research Training Grant [MRTG-CT_2/15/2012_Fernandez-Bustamante (Ana)], and the 2011 Foundation for Anesthesia Education and Research Medical Student Anesthesia Research Fellowship [2011-MSARF-Shah (Chirag)].
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The authors declare no conflicts of interest with this manuscript.
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Shah, C.K., Moss, A., Henderson, W. et al. Quick reference tidal volume cards reduce the incidence of large tidal volumes during surgery. J Anesth 32, 137–142 (2018). https://doi.org/10.1007/s00540-017-2426-z
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DOI: https://doi.org/10.1007/s00540-017-2426-z