Final answer:
The immediate action of the nurse after a physician performs an amniotomy on a laboring woman would be to monitor fetal heart rate and pattern.
Step-by-step explanation:
The immediate action of the nurse after a physician performs an amniotomy on a laboring woman would be to monitor fetal heart rate and pattern. Amniotomy is the procedure where the amniotic sac is artificially ruptured to help progress labor. By monitoring the fetal heart rate and pattern, the nurse can ensure the well-being of the baby and detect any potential complications.