Which of the following is NOT identified as a maternal response to labor?

• A. Increase in blood pressure, pulse, and cardiac output
• B. Decrease in breathing rate
• C. Increase in white blood cell production
• D. Increase in workload of the heart

Answer: (B)

During labor, the body ramps up cardiovascular and respiratory activity to support both the mother and fetus. Heart rate, blood pressure, and cardiac output increase as the sympathetic system boosts circulation, and the heart works harder to meet the higher metabolic demands. Oxygen use goes up, so breathing rate typically increases to enhance ventilation rather than slow down. White blood cell production often rises in response to stress. A decrease in breathing rate would not fit with these labor-related changes, making it the not-typical response.