Do reactive oxygen species contribute to contractile dysfunction following rapid ventricular pacing in dogs?
The results indicate that the N-acetylcysteine enhances recovery of contractile function after rapid ventricular pacing independent of alterations in systemic and coronary hemodynamics and imply that reactive oxygen species are an important component of the contractile dysfunction following rapid pacing in vivo.
Ethnicity was not a predictor of axillary node involvement, recurrent disease or mortality in grade 1 breast cancer in our population.