Summary
Verapamil stops the electrical activity of the sinus node cells. In the presence of verapamil, dibutyryl cAMP brings about a recovery of the spontaneous activity, whereas noradrenaline is ineffective.
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Tuganowski, W., Kopeć, P., Kopyta, M. et al. The effect of verapamil and dibutyrul cAMP on the spontaneous activity of the sinus node. Experientia 33, 642–643 (1977). https://doi.org/10.1007/BF01946549
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DOI: https://doi.org/10.1007/BF01946549