Q: What is "ABCDE" Bundle/approach for Delirium?

Answer:

Awakening and 

Breathing (minimize sedation)
Coordination (among various teams),
Delirium Monitoring (and Management),
Early Mobility 

Reference:

Morandi A, Brummel NE, Ely EW. Sedation, delirium and mechanical ventilation: The ‘ABCDE’ approach. Curr Opin Crit Care. 2011;17(1):43–49