Myometrial and cardiovascular responses to alterations in plasma epinephrine and norepinephrine

摘要: Abstract Plasma epinephrine and norepinephrine levels were determined when these hormones separately infused into patients in labor. Norepinephrine caused increased incoordinate uterine activity a pressor response. Epinephrine diminished during spontaneous oxytocin-induced Increased tonus was noted half the cases of labor once infusion discontinued. The major cardiovascular response to depressor. When discontinued, rapid decrease plasma hormone seen normal values attained within 5 minutes. These correlated directly with but not which persisted for longer period time.