Final answer:
The ACOG guidelines recommend discontinuing PAP smears for women who have undergone a hysterectomy, unless the hysterectomy was performed for cervical cancer.
Step-by-step explanation:
The guidelines from the American College of Obstetricians and Gynecologists (ACOG) recommend that women who have undergone a hysterectomy should discontinue PAP smears unless the hysterectomy was performed for cervical cancer. In cases where the cervix was removed, routine PAP smears are not necessary as there is no cervix left to screen for cervical cancer.