50 50 0 -50 -100 Class I Inward Na' current 0 4 Resting membrane potential 1 Outward Class IV K' current Outward K' Inward Ca current 2 3 Outward K' current Class III 4 Class II 1) Antiarrhythmic drugs are used to correct an irregular heartbeat. Give 2 examples each of class 1-1V drugs that act at positions 0-4 of the myocardial action potential sequence. Do not give brand names, use generic names. Example Tylenol(brand) is acetaminophen (generic). Etc. (8)