Kaplan-Meir survival curves (only cardiac deaths were considered) in patients stratified according to the dobutamine induced change in wall motion score index. Abbreviations: ΔWMSi, change in wall motion score index. From: Pratali L, Picano E, Otašević P, Vigna C, Palinkas A, Cortigiani L, Dodi C, Bojić D, Varga A, Csanady M, Landi : Prognostic significance of the dobutamine echocardiography test in idiopathic dilated cardiomyopathy. Am J Cardiol. 200; 88 :1374-8.