Which of the following is NOT a contraindication to a contraction stress test?

A contraction stress test is used primarily to assess the fetal heart rate response to contractions, helping to evaluate fetal well-being, especially in high-risk pregnancies. Certain conditions may limit or contraindicate the performance of this test due to potential risks to the mother and fetus.

Gestational diabetes, while an important condition that requires management during pregnancy, does not serve as a contraindication to performing a contraction stress test. It is typically managed with either lifestyle modification or insulin therapy, depending on the severity. The physiological implications of gestational diabetes do not create an immediate risk for the patient undergoing the stress test. Therefore, it is permissible to conduct a contraction stress test in a patient with this condition.

In contrast, other options such as multiple gestation, preterm labor, and previa are associated with increased risks that can complicate the testing process. For instance, multiple pregnancies may lead to labor from the contractions induced during the test, and preterm labor poses risks for the fetus. Placenta previa presents a significant risk for bleeding, which can be exacerbated by contractions.

Thus, knowing the conditions that might complicate the contraction stress test is crucial for maintaining maternal and fetal safety, and gestational diabetes does not pose a direct threat in this context.