Is informed consent possible in acute myocardial infarction? Heart. 2004;90:1237 8. 314. Williams BF, French JK, White HD. Informed consent during the clinical emergency of acute myocardial infarction (HERO-2 consent substudy): a prospective observational study. Lancet. 2003;361:918 22. 315. Ritchie JL, Wolk MJ, Hirshfeld JW Jr, et al. Task force 4: appropriate clinical care and issues of self-referral. J Am Coll Cardiol. 2004;44: 1740 6. 316. Hirshfeld JW Jr, Balter S, Brinker JA, et al. ACCF/AHA/HRS/SCAI clinical competence statement on physician knowledge to optimize patient safety and image quality in fluoroscopically guided invasive cardiovascular procedures. A report of the American College of Car- diology Foundation/American Heart Association/American College of Physicians Task Force on Clinical Competence and Training. Circu- lation. 2005;111:511 32. 317. Chambers C, Fetterly K, Holzer R, et al. Radiation safety program for the cardiac catheterization laboratory. Catheter Cardiovasc Interv. 2011; 77:546 56. 318. Deleted in proof. 319. Deleted in proof. 320. Krasuski RA, Beard BM, Geoghagan JD, et al. Optimal timing of hydration to erase contrast-associated nephropathy: the OTHER CAN study. J Invasive Cardiol. 2003;15:699 702. 321. Taylor AJ, Hotchkiss D, Morse RW, et al. PREPARED: Preparation for Angiography in Renal Dysfunction: a randomized trial of inpatient vs outpatient hydration protocols for cardiac catheterization in mild-to- moderate renal dysfunction. Chest. 1998;114:1570 4. 322. Adolph E, Holdt-Lehmann B, Chatterjee T, et al. Renal Insufficiency Following Radiocontrast Exposure Trial (REINFORCE): a randomized comparison of sodium bicarbonate versus sodium chlo-ride hydration for the prevention of contrast-induced nephropathy. Coron Artery Dis. 2008;19:413 9. 323. Brar SS, Shen AY, Jorgensen MB, et al. Sodium bicarbonate vs sodium chloride for the prevention of contrast medium-induced nephropathy in patients undergoing coronary angiography: a randomized trial. JAMA. 2008;300:1038 46. 324. Brar SS, Hiremath S, Dangas G, et al. 