What is Known:
• Malnutrition, defined according to BMI-for-age z score, is correlated with poor outcome in the critically ill child.
• In this setting, nutritional assessment should consist not only of a static assessment based on BMI-for-age z score but also of a dynamic assessment to identify recent faltering growth.
What is New:
• Critically ill children frequently present with faltering growth at admission.
• Faltering growth is a newly identified independent associated factor of suboptimal outcome in this setting (extended length of stay).