1. Management of the critically ill geriatric patient;Marik;Crit Care Med,2006
2. Balas MC, Casey CM, Happ MB. Assessment and management of older adults with complex illness in the critical care unit. AACN, GNEC Critical Care. Available at: http://hartfordign.org/uploads/File/gnec_state_of_science_papers/gnec_critical_care.pdf. Accessed September 16, 2013.
3. Delirium in older patients in surgical intensive care units;Balas;J Nurs Scholarsh,2007
4. Delirium as a predictor of mortality in mechanically ventilated patients in the intensive care unit;Ely;JAMA,2004
5. Delirium in the elderly: a clinical review;Saxena;Postgrad Med J,2009