- Blood pressure circadian rhythm and endothelial function in heavy smokers: acute effects of transdermal nicotine. Yugar-Toledo, J.C., Ferreira-Melo, S.E., Sabha, M., Nogueira, E.A., Coelho, O.R., Consolin Colombo, F.M., Irigoyen, M.C., Moreno, H. Journal of clinical hypertension (Greenwich, Conn.) (2005)