Dysrhythmias arise because of [P] Intrinsic myocardial contractility [Q] Vasodilator metabolites [R] Delayed after depolarization, which triggers ectopic beats [S] Reentry resulting from partial conduction block

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Dysrhythmias arise because of [P] Intrinsic myocardial contractility [Q] Vasodilator metabolites [R] Delayed after depolarization, which triggers ectopic beats [S] Reentry resulting from partial conduction block