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Cardiotocography (CTG, NST)

A Cardiotocography (CTG, NST) is a diagnostic procedure test of the pregnancy. It shows baby's heart rate and the mother's contractions. No ionising radiation when done without X-ray guidance.

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

SmartAnswer by DigiNepal SI

A Cardiotocography (CTG, NST) is a diagnostic procedure test of the pregnancy. It shows baby's heart rate and the mother's contractions. No ionising radiation when done without X-ray guidance. What it shows: Baby's heart rate and the mother's contractions. generated by SI from cited sources · general information, not a diagnosis · consult a health professional

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

What it shows

Baby's heart rate and the mother's contractions.

Why it is done

Reduced baby movements, labour monitoring.

Preparation

Follow the centre's instructions; most need no special preparation.

Radiation & safety

No ionising radiation when done without X-ray guidance.

How long it takes

20 to 40 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

Sample type

Diagnostic procedure

Consult a doctor to interpret results — a single test does not make a diagnosis.

Where to get this near you

Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

What does a ctg show?
Baby's heart rate and the mother's contractions.

Why is a ctg done?
Reduced baby movements, labour monitoring.

How do I prepare for a ctg?
Follow the centre's instructions; most need no special preparation.

Does a ctg use radiation?
No ionising radiation when done without X-ray guidance.

How long does a ctg take?
20 to 40 minutes

Why is Cardiotocography (CTG, NST) done?
Reduced baby movements, labour monitoring.

How do I prepare for Cardiotocography (CTG, NST)?
Follow the centre's instructions; most need no special preparation.

Is Cardiotocography (CTG, NST) safe in pregnancy?
No ionising radiation when done without X-ray guidance.

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

Emergency — call102