In obstetrics, what does McDonald's Sign refer to?

McDonald's Sign refers specifically to the ease in flexing the body of the uterus against the cervix. This sign is typically observed during a prenatal examination and is used as an indicator of early pregnancy. When the uterus is soft and mobile, it can be easily manipulated, which highlights its flexibility. This sign is primarily related to the early adaptations of the uterus to accommodate the growing fetus.

The options regarding increased fetal heart rate, decreased uterine size, and abnormal fetal position do not accurately represent McDonald's Sign. Increased fetal heart rate is a separate clinical observation that relates to the fetal status rather than the condition of the uterus itself. Decreased uterine size would suggest a medical concern or complication rather than a sign of normal uterine flexibility. Lastly, an abnormal fetal position is unrelated to McDonald's Sign; it pertains to how the fetus is situated within the uterus, not the mobility of the uterus itself. Understanding this sign is essential for midwives and obstetric practitioners in assessing uterine health and pregnancy progression.