- Effect of phenylephrine on focal atrial fibrillation originating in the pulmonary veins and superior vena cava. Tai, C.T., Chiou, C.W., Wen, Z.C., Hsieh, M.H., Tsai, C.F., Lin, W.S., Chen, C.C., Lin, Y.K., Yu, W.C., Ding, Y.A., Chang, M.S., Chen, S.A. J. Am. Coll. Cardiol. (2000)