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Figure 1 Regional left ventricular blood flow. During ischemia, low dose mibefradil increased blood flow in the nonischemic (N I) zone. During reperfusion, low dose mibefradil caused increases in blood flow in both the ischemic (ISCH) and nonischemic zones, whereas verapamil increased blood flow only in the nonischemic zone (blood flow was not measured with higher dose of mibefradil). *p < 0.05, p < 0.01, both versus placebo. p < 0.01 versus verapamil.