McKinney-4th-Edition-Maternal-Child-Nursing

1. The maternity nurse understands that as the uterus contracts during labor, maternalfetal exchange of oxygen and waste products a. Continues except when placental functions are reduced b. Increases as blood pressure decreases c. Diminishes as the spiral arteries are compressed d. Is not significantly affected ANS: C 2. Which statement is the best rationale for assessing maternal vital signs between contractions? a. During a contraction, assessing fetal heart rates is the priority. b. Maternal circulating blood volume increases temporarily during contractions. c. Maternal blood flow to the heart is reduced during contractions. d. Vital signs taken during contractions are not accurate. ANS: B 3. Which mechanism of labor occurs when the largest diameter of the fetal presenting part passes the pelvic inlet? a. Engagement b. Extension c. Internal rotation