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Ranolazine (10 µM)–induced postrepolarization refractoriness in PV sleeve preparations (n = 6). Ranolazine induced a rate-dependent decrease in APD85, but an increase in ERP leading due to development of PRR (the difference between ERP and APD85); n = 6. Data are expressed in mean + SD. *p < 0.05; ERP vs APD85.
