title: Invited commentary.
authors.affiliation: Division of Cardiothoracic Surgery, Maine Medical Center, 22 Bramhall St, Portland, ME 04102, USA. kramer@mmc.org
authors.forename: Robert S
authors.initials: RS
authors.lastname: Kramer
mesh_terms: D058186:Acute Kidney Injury / Q000209:etiology*; D001021:Aortic Valve / Q000601:surgery*; D017023:Coronary Angiography / Q000009:adverse effects*; D017558:Elective Surgical Procedures; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans