Fetal Doppler Glossary

AIUM

American Institute of Ultrasound in Medicine

FDA

Food & Drug Administration

BPM

Beap Per Minute

FHR

Fetal Heart Rate

FM

1. Fetal Movement 2. Frequency Modulation

Doppler Effect

Doppler effect is the basic principle which is employed to detect the speed of blood flow by means of ultrasound. In such a way, fetal heart beat can be heard and examined for defects, if there is any.

UCAN

Umbilical Cord Around Neck, the nuchal cord entanglement, by which Fetal distress is caused.

Fetal hypoxia

Insufficient oxygen supply to the fetus.

Fetal distress

An abnormal condition under which a fetus becomes excessively fatigued, usually characterized by an abnormal heart rhythm.

Fetal heart block

A block of electrical flow within the heart muscle resulting in change of heart rhythm.

Continuous Wave Doppler

This type of ultrasound Doppler uses the change in pitch of the sound waves to provide information about blood flow through a blood vessel.

Fetal Ultrasound Doppler

A device which uses ultrasound to pick up the fetal heart beat and detect the abnormal conditions of fetus.

Echo

A sound wave produced by a reflection of an interface and received by the transducer.

Fetal Monitoring

Monitoring of the baby before birth. This usually refers to monitoring of the fetal heart beat.

Fetal Heartbeat Sounds

Sounds of the fetal heartbeat which like galloping horse, the beat rate is about twice as fast as the mother's heart rate. The frequency of sounds are between 120-180 BPM.

Fetal Ultrasonic Monitor

Another term of Fetal Ultrasonic Doppler.

Fetoscope

A type of stethoscope, which is especially used for listening to a baby.

High-risk Pregnancy

Pregnancies in which patients are at high risk either fetal or maternal complications.

Incident Beam

A sound wave beam generated by a transducer that strikes an interface.

Internal Fetal Monitoring

A method of monitoring in which an electrode is attached to the baby's head for recording heart beats.

Receiver

The part of the ultrasound machine that listens to returning sound waves and converts them to electrical signals.

Ultrasound<

A sound wave which has a frequency above the audible human range.

3MHz waterproof probe

The probe is good for the whole stage of pregnancy, especially for early pediatric/neonatal fetal heartbeat detection, as early as 8-weeks.

2MHz waterproof probe

The probe is optimized mainly for deep penetration for heavy patients and third trimester pregnancy.

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