What are some probable signs of pregnancy that a nurse should recognize? Select all that apply.

Recognizing probable signs of pregnancy is essential for nurses and healthcare providers as they assess a patient for potential pregnancy. Among the signs listed, Chadwick's sign is a classic probable indicator of pregnancy. This sign refers to the bluish discoloration of the cervix and vaginal mucosa, which occurs due to increased blood flow and vascular congestion in the reproductive organs during pregnancy. It typically appears around 6 to 8 weeks of gestation and is a physiological change that healthcare providers can visually identify during a pelvic examination.

Morning sickness, increased appetite, and uterine enlargement, while they may indicate pregnancy, do not exclusively classify as probable signs. Morning sickness is considered a common early symptom of pregnancy, relating more to a maternal physiological response rather than a definitive clinical sign. Increased appetite can occur in many situations and is not a reliable indicator on its own. Uterine enlargement, while often presenting in pregnancy, can also be influenced by various conditions or stages in women who are not pregnant, making it less definitive without additional clinical evidence.

Therefore, while several signs may suggest pregnancy, Chadwick's sign distinctly qualifies as a probable sign due to its specificity to the physiological changes associated with pregnancy.