Figure 7-3 Comparison of the effects of halothane (left) and isoflurane (right) on the isometric active force (AF) of papillary muscles from healthy hamsters (red bars) and those with cardiomyopathy (black and gray bars). Probability values refer to between-group differences. *, Significantly (P < .05) different from controls. (Adapted from Vivien B, Hanouz J-L, Gueugniaud P-Y, et al: Myocardial effects of halothane and isoflurane in hamsters with hypertrophic cardiomyopathy. Anesthesiology 87:1406–1416, 1997.)