What is an indication for performing a non-stress test (NST)?

A non-stress test (NST) is primarily used to assess fetal well-being, particularly in situations where there are concerns about the fetus's health. One of the indications for performing an NST is reduced fetal movement. When a mother perceives less fetal activity, it can be a sign of potential fetal distress or complications. The NST measures the fetal heart rate in response to movements, helping to determine if the fetus is receiving enough oxygen and is healthy. This evaluation can provide reassurance or prompt further interventions if abnormalities are detected.

In contrast, increased fetal movement, history of maternal obesity, or advanced maternal age may not necessarily indicate the need for an NST. Increased fetal movement can actually indicate fetal well-being, while maternal obesity and advanced maternal age are risk factors that require monitoring but do not solely warrant an NST unless accompanied by other concerning symptoms. Therefore, reduced fetal movement is a clear indication for conducting an NST to ensure thorough assessment and monitoring of the fetus's condition.