Toward the end of your pregnancy, your doctor may schedule regular non-stress tests (NST) to monitor the health of your baby. This common and non-invasive test is often performed between 38 weeks and 42 weeks gestation to ensure fetal well-being, but may be ordered earlier if the doctor deems it necessary. Non-stress tests are typically performed in your doctor's office and take between 20 minutes and 40 minutes to complete. Since you will be hooked up to a machine for that time, be sure to use the lavatory beforehand.
A simple and painless procedure, a non-stress test is often used in cases where the mother is going past her assigned due date or during a high-risk pregnancy. For example, mothers who have had previously problematic pregnancy or have pre-existing or gestational diabetes may undergo NSTs more frequently. The test monitors accelerations and de-accelerations of the baby's heart rate, as well as any contractions you may be having. If you are concerned that your baby isn't moving as much, your doctor may order this test.
A non-stress test is not considered a risky test. It is non-invasive and does not require blood samples or invasive exams. The biggest risk is a misinterpretation of the data.2 If you have concerns, be sure to talk to your practitioner about them before undergoing the test. They can reassure you about how they are working to minimize the risks to you and your baby.
Dr Pradnya Randive MBBS, MS(OBGY), DPH (Mum) is an Obstetrician Gynaecologist, Laparoscopist & Fertility Specialist, She is the Director of Aadityacare Maternity Hospital, Bhandup, Mumbai.
