- Intravenous propafenone for termination of reentrant supraventricular tachycardia. A placebo-controlled, randomized, double-blind, crossover study. Shen, E.N., Keung, E., Huycke, E., Dohrmann, M.L., Nguyen, N., Morady, F., Sung, R.J. Ann. Intern. Med. (1986)