Cardiotocography (CTG)

PropertiesDetails
SFDA ClassificationClass IIa
Purpose of UseIt is used to monitor the heartbeat and movement of the fetus and to know the intensity and timing of uterine contraction.

Work Location & End-UserPlace of work: In the obstetrics and gynecology department
End User: Gynecologist and Obstetrician
Parts & AccessoriesParts and accessories
• Toco Transducer: records uterine contraction
• Ultrasound Transducer: monitor fetal heartrate
• Electronic fetal monitor: receives signals from toco & ultrasound probes on the mother's abdomen and converts them into digital information
• Special Screen Paper: Displays
Information in digital form


OperationTwo probes are attached to the mother’s abdomen by means of a rubber belt, one of which is pressure-sensitive to monitor uterine contractions, and the other sends a special ultrasound called Doppler that is used to measure moving objects, which helps in recording the fetus’s heartbeat in the form of waves of varying strength. The midwife may put some jelly on the skin to help get a strong signal. The signals are sent from the probes to the electronic fetal monitor, which converts them into digital information that is displayed on special paper that helps in knowing the following:
• The time of uterine contractions and the calculation of the rate
• Strength of uterine contraction
• Fetal heart rate
• The impact of uterine contraction on the fetus's heartbeat

Common Problems• Power Supply Problems
• Breakage of one or more cable connectors
• Using a gel with the toco probe instead of using it with the ultrasound probe causing false results
• Wrong paper or paper orientation causing malfunctions.
• Problem with the recorder, the thermal printer head must be replaced or cleaned
Manufacturers• GE Healthcare
• Philips
• Vyaire
• Bistos
SourcesSaudi Food and Drug Authority
Patient.info
Nirsuba Gurung
ebme

Ehsan Abbasi

en_GBEnglish (UK)