Fig. 1.

A proposed conceptual framework for rehabilitation potential of very old patients in the ICU. The proposed framework recognizes the multiple factors which influence rehabilitation potential of very old patients in the ICU. In addition to specific considerations of both critical and geriatric medical care, the individual's baseline functional status and level of activity is recognized to be an important determinant of subsequent rehabilitation potential. The emerging concept of intrinsic capacity, reflecting vital domains which display a wide heterogeneity among older people, is also introduced into the proposed framework, in addition to the modulating factors of frailty and resilience