the intravenous administration of 80 units crystalline zinc insulin produced both hypokalemia ( 3.78 +/- 0.22 reduced to 2.36 +/- 0.18 meq potassium/liter plasma ) and a reappearance of ventricular tachycardia despite no change in plasma and myocardial tissue concentrations of disopyramide from those which had been effective in establishing and maintaining sinus rhythm .
C0042514
ventricular tachycardia
C0012702
disopyramide