Which test measures the contraction patterns of the uterus?

Which test measures the contraction patterns of the uterus?

• A. Non-stress test (NST)
• B. Biophysical profile (BPP)
• C. Contraction stress test (CST)
• D. Amniocentesis

Answer: (C)

The contraction stress test (CST) is specifically designed to assess the response of the fetal heart rate to uterine contractions. This test involves monitoring the fetal heart rate while inducing contractions, either through nipple stimulation or the administration of oxytocin. The primary goal is to observe how the fetus tolerates contractions, which can indicate uteroplacental insufficiency. In contrast, other tests such as the non-stress test (NST) evaluate fetal heart rate patterns in the absence of contractions, primarily looking for accelerations that indicate fetal well-being. The biophysical profile (BPP) is a comprehensive assessment that includes evaluations of fetal heart rate, movements, tone, and amniotic fluid levels but does not specifically focus on contraction patterns. Amniocentesis is a procedure used to extract amniotic fluid for testing purposes, providing genetic and biochemical information rather than measuring contractions. Thus, the correct choice is the contraction stress test, as it uniquely measures how the fetus responds to uterine contractions, providing critical information about the health and well-being of the fetus during labor.

The contraction stress test (CST) is specifically designed to assess the response of the fetal heart rate to uterine contractions. This test involves monitoring the fetal heart rate while inducing contractions, either through nipple stimulation or the administration of oxytocin. The primary goal is to observe how the fetus tolerates contractions, which can indicate uteroplacental insufficiency.

In contrast, other tests such as the non-stress test (NST) evaluate fetal heart rate patterns in the absence of contractions, primarily looking for accelerations that indicate fetal well-being. The biophysical profile (BPP) is a comprehensive assessment that includes evaluations of fetal heart rate, movements, tone, and amniotic fluid levels but does not specifically focus on contraction patterns. Amniocentesis is a procedure used to extract amniotic fluid for testing purposes, providing genetic and biochemical information rather than measuring contractions.

Thus, the correct choice is the contraction stress test, as it uniquely measures how the fetus responds to uterine contractions, providing critical information about the health and well-being of the fetus during labor.