Table 2.

Primary and secondary outcomes results *Values expressed as medians and interquartile range

	Morphine group	Control group	p value
Duration of severe hypoxemia, seconds*	10 (0, 62.5)	5 (0, 45)	0.45
Duration of hypoxemia, seconds*	235 (82.5, 340)	90 (20, 187.5)	0.04
Duration of procedure, seconds*	271 (57.5, 418.5)	94 (62, 215.5)	0.27
Maximum increase in mean BP from baseline, mm Hg*	18 (9, 24.25)	20 (11.75, 28)	0.65
Number of attempts, n*	2 (1, 3.5)	1 (1, 2.5)	0.34
Intubation achieved at first attempt, n	7	9	0.49
Intubation needing rescue intubator, n	7	4	0.27
Bradycardia during procedure, n	16	12	0.175