What outcome does the contraction stress test (CST) aim to achieve?

• A. To evaluate the need for cesarean delivery
• B. To ensure the client has contractions to monitor for late decelerations
• C. To determine the length of labor
• D. To assess maternal infection risk

Answer: (B)

The contraction stress test (CST) primarily aims to monitor the fetal heart rate response to uterine contractions. This test is designed to simulate the stress of labor by inducing contractions, usually through nipple stimulation or administering oxytocin. The key focus of the CST is to observe how the fetus responds during these contractions, specifically for signs of late decelerations. Late decelerations can indicate compromised fetal oxygenation, which is critical for assessing the well-being of the fetus during labor. Therefore, ensuring the client experiences contractions to monitor for these decelerations directly aligns with the purpose of the CST.

The other outcomes mentioned do not encapsulate the primary goal of the CST effectively. Evaluating the need for cesarean delivery, determining labor length, or assessing maternal infection risk are not the primary objectives of conducting a CST. Instead, the test is focused squarely on fetal heart rate patterns in response to induced contractions.