title: Frailty: it's hard to define, but you know it when you see it.
authors.affiliation: Department of Cardiothoracic and Vascular Surgery, St Luke's Mid America Heart Institute, Kansas City, Mo. Electronic address: kallen2340@aol.com.
authors.forename: Keith B
authors.initials: KB
authors.lastname: Allen
mesh_terms: D006348:Cardiac Surgical Procedures / Q000009:adverse effects*; D016330:Frail Elderly; D015577:Geriatric Assessment; D006801:Humans; D011183:Postoperative Complications / Q000209:etiology*