Evaluation of the self-inflating bag-valve-mask and non-rebreather mask as preoxygenation devices in volunteers.

ABSTRACT: To evaluate and compare the effectiveness and tolerability of preoxygenation with the self-inflating bag-valve-mask (BVM) and non-rebreather mask (NRM) as are used before emergency anaesthesia. Device performance evaluation. Experimental study. 12 male and 12 female healthy volunteers (age range 24-47) with no history of clinically significant respiratory disease. End-expiration oxygen measurements (F(E)O(2)) after 3 min of preoxygenation with BVM (without mechanical assistance) and NRM devices. Mask pressures were measured and subjective difficulty of breathing was also assessed with a visual analogue score (VAS). The final F(E)O(2) achieved was 58.0% (SD 7.3%) for the NRM compared to 53.1% (SD 13.4%) for the BVM (p=0.072). Preoxygenation was associated with small increases in F(E)CO(2) t

SUBMITTER: Robinson A 

PROVIDER: S-EPMC3488733 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature