Little change in temporal-spatial gait parameters was noted during backpack use with loads limited to 15% body weight. Future studies need to examine the effects of the child's height, body mass index, and strength on safe backpack use.
1 The effect of body surface area (BSA) burn injury on neuromuscular pharmacodynamics of vecuronium was evaluated. 2 The neuromuscular responses of 15 burned children were compared with those in five controls. 3 The effective dose for 50% suppression of twitch tension (ED50) was 34 ,ug kg-' for patients with < 40% BSA burn, 55 ,ug kg-1 for 40-60% BSA burn, and 65 ,ug kg-1 for patients with > 60% BSA burn. These values were significantly higher than the value for control patients, which was 18 pug kg-'.4 Burn injury induces a resistance to the neuromuscular effects of vecuronium, the magnitude of which is related to burn size.
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