Non-Stress Test (NST)
About Non-Stress Test (NST)
Non-Stress Test (NST) is a non-invasive prenatal test used to monitor fetal heart rate and its response to movements.
. It helps assess the well-being of the fetus, especially in high-risk pregnancies. The test measures whether the baby’s heart rate increases appropriately with movement, indicating adequate oxygen supply.
Overview
Evaluates fetal health and oxygenation
Monitors fetal heart rate in response to movements
Used in high-risk pregnancies (diabetes, hypertension, etc.)
Helps detect fetal distress or compromised conditions
Often performed in late pregnancy or when reduced fetal movements are noted
Workflow
- Step 1: Patient Preparation Mother is positioned comfortably, usually in a semi-reclining position.
- Step 2: Sensor Placement Two belts are placed on the abdomen—one for fetal heart rate and one for uterine activity.
- Step 3: Monitoring Fetal heart rate and movements are recorded over time.
- Step 4: Data Recording Graph (CTG tracing) is generated showing heart rate patterns.
- Step 5: Interpretation Doctor evaluates reactivity and variability of fetal heart rate.
- Step 6: Reporting Results are documented and explained to the patient.
Benefits & Value
For Patients
Non-invasive and painless monitoring
Provides reassurance about baby’s well-being
Early detection of fetal distress
For Caregivers & Families
Immediate information about fetal health
Reduces anxiety in high-risk pregnancies
Supports safe pregnancy management
For the Community
Promotes safe maternal and fetal care
Reduces risk of complications during pregnancy
Encourages routine prenatal monitoring
Risks & Challenges
No significant risks (completely safe for mother and baby)
May require repeat testing if results are inconclusive
Interpretation depends on clinical expertise
Frequently Asked Questions
Is NST painful? +
No, it is completely painless.
How long does the test take? +
Usually 20–40 minutes.
Is fasting required? +
No, no preparation is needed.
When is NST recommended? +
Usually in the third trimester or high-risk pregnancies.
Is it safe for all pregnancies? +
Yes, it is safe and widely used.
