The rapid aging of the population means that anesthesiologists care for elderly patients with increasing regularity. Although age is an independent predictor or adverse postoperative outcomes, significant outcome variation exists among older surgical patients. Frailty, a syndrome that describes an aggregate susceptibility to adverse health outcomes due to age-, and disease-related deficits that accumulate across multiple domains is a key predictor of adverse postoperative outcomes in elderly patients. Frail surgical patients are at increased risk of complications, institutionalization, death, and are high healthcare resource users.