RESULTS	The study group had better global tolerance ( p < 0.001 ) , less procedural interference by movement or cough ( 13.6 % vs. 36.1 % , p < 0.001 ; 30.0 % vs. 44.2 % , p = 0.001 , respectively ) , and shorter time to orientation and ambulation ( 11.710.2 min vs. 29.726.8 min , p < 0.001 ; 30.018.2 min vs. 55.740.6 min , p < 0.001 , respectively ) compared to the control group .\