If oxygen desaturation (as recorded by pulse oximetry) below 95% occurs, then the patient will be ventilated in the usual fashion to ensure oxygenation, and re-attempting intubation using the GlideScope may proceed, but the timing will continue, and the same limits to successful intubation (within 3 attempts or total of 150s) will apply. Between attempts, the tube may be re-shaped by the operator if a malleable stylet is used and either the original curvature has been lost or the operator feels that another curvature would be preferred.