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GE Corometrics 129 Fetal Monitor

Experience reliable fetal monitoring with the Corometrics 129 Fetal Monitor. Whether used for routine antepartum monitoring or during labor and delivery, this compact and user-friendly monitor provides essential capabilities to support clinicians in delivering safe and effective care to expectant mothers and their babies. Trust in the Corometrics 129 Fetal Monitor for accurate and reliable fetal monitoring in any clinical setting.

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GE Corometrics 129 Fetal Monitor


Introducing the Corometrics 129 Fetal Monitor, a reliable and user-friendly solution for monitoring fetal well-being during labor and delivery. Designed by GE Healthcare, this compact and portable monitor offers essential features to support clinicians in providing optimal care for expectant mothers and their babies. Let’s explore the key features and benefits of the Corometrics 129 Fetal Monitor:


  • Fetal Heart Rate Monitoring: Provides continuous monitoring of fetal heart rate (FHR) using Doppler ultrasound technology, allowing clinicians to assess fetal well-being and detect any signs of distress.
  • Uterine Activity Monitoring: Monitors uterine contractions (UC) to evaluate the progress of labor and assess the effectiveness of contractions in promoting cervical dilation and fetal descent.
  • Clear Display Screen: Features a clear and easy-to-read display screen that presents fetal heart rate tracings and uterine activity measurements, enabling quick and accurate interpretation by clinicians.
  • Audio and Visual Alarms: Offers audible and visual alarms to alert clinicians to abnormal fetal heart rate patterns or uterine contractions, allowing for timely intervention to address any concerns.
  • Compact and Lightweight Design: Designed for portability, the Corometrics 129 Fetal Monitor is compact and lightweight, making it easy to move between patient rooms or for use during patient transport.
  • Battery Operation: Equipped with a built-in rechargeable battery, ensuring uninterrupted monitoring even in environments where access to electrical outlets may be limited.


  • Enhanced Patient Safety: Continuous monitoring of fetal heart rate and uterine contractions helps ensure the timely detection of any changes in fetal well-being, allowing for prompt intervention to optimize maternal and fetal outcomes.
  • User-Friendly Operation: The Corometrics 129 Fetal Monitor features intuitive controls and a simple interface, making it easy for clinicians to set up and operate the monitor with minimal training.
  • Portability and Versatility: Its compact size and lightweight design make the Corometrics 129 Fetal Monitor ideal for use in various clinical settings, including labor and delivery rooms, antepartum units, and birthing centers.
  • Cost-Effective Solution: Designed to offer essential fetal monitoring capabilities at an affordable price point, the Corometrics 129 Fetal Monitor provides excellent value for healthcare facilities of all sizes.
  • Reliable Performance: Built by GE Healthcare, a trusted leader in medical technology, the Corometrics 129 Fetal Monitor delivers reliable performance and accuracy, ensuring confidence in monitoring fetal well-being during labor and delivery.


Ultrasound Mode

  • Technique: pulse Doppler with autocorrelation processing
  • Transducer type: 9-crystal.
  • Pulse reception frequency: 4 kHz single ultrasound mode, 2 kHz dual ultrasound mode
  • Pulse duration: 92 µs
  • Transmitter frequency: 1.151 MHz
  • Intensity: <5mW/cm2
  • Heart rate counting range: 50-210 BPM
  • Leakage current: <10 µA at 120-240 VAC, isolated by transducer


  • Technique: peak detecting, beat-to-beat cardiotachometer
  • Heart rate counting range: 30-240 BPM
  • Heart rate resolution: ±1BPM
  • Artifact elimination: switch selectable, ±25 BPM artifact rejection
  • Countable input signal range: 15 µV to 2mV peak-to-peak
  • Offset voltage tolerance (differential): ±300 mVDC maximum
  • Maximum common mode voltage: 20V peak-to-peak
  • Preamplifier bandwidth: 1-100 Hz
  • Common mode rejection: balanced > 120 dB at mains frequency
  • Input equivalent noise: < 10µV peak-to-peak
  • Input impedance: differential > 10 MO, common mode > 20MO
  • Mains frequency rejection: > 40 dB
  • Leakage current: < 60µA at 254 VAC, electrically isolated
  • Isolation, mains-to-patient: >4kVAC
  • Leg plate tester jack: simulated r-wave at 120 ± 1 BPM

Fetal Alarms (for Ultrasound or FECG Modes)

  • Audio: alternating 1.5 second chimes (773 Hz and 523 Hz)
  • Visual: flashing heart rate numeric
  • Limits: user selectable high and low fetal heart rate
  • Technical: signal quality
  • Tachycardia response time: 5 minutes at 100% limit violation
  • Bradycardia response time: 30 seconds at 100% limit violation
  • Signal quality response time: 100% signal loss – 1.25 minutes, 70% signal loss – 5 minutes, 65% signal loss – 10 minutes
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