Which treatment would be least effective for asystole?
Recommended treatment for asystole is administration of atropine. If atropine is unsuccessful epinephrine is given. Ultimately cardiac pacing is necessary if atropine and epinephrine do not establish an adequate heart rate. Calcium has no clear role in treating asystole.
External pacemaker
Intravenous epinephrine, 10 ml. of 1:10,000.
Intravenous calcium gluconate, 10 ml. of 10% solution
Intravenous atropine, 0.5 mg.