When an older adult with multiple comorbidities develops a new, significant functional decline after a hospitalization, how do you decide whether to pursue further diagnostic workup versus accept it as post-hospitalization deconditioning and focus on rehabilitation?

I try to characterize the nature of the functional decline in a descriptive sense - what has become difficult and why, what are the patient and caregivers experiencing? I think through a differential diagnosis for that, and then I look at the totality of diagnosed problems from the hospitalization a...