Fetal Doppler Monitor
A Doppler fetal monitor or fetal heart rate monitor is a portable Doppler ultrasound transducer that uses Doppler effect to detect the heart beat in a fetal and gives it a distinct simulated heart beat. Some models also display heart rate beats per minute. The use of this monitor is sometimes known as Auscultation Doppler.
A Doppler fetal monitor provides information about the fetus is similar to the information provided by a fetal stethoscope. One benefit of fetal Doppler monitoring over a headset (not electronic) fetal stethoscope is the audio output, which allows people other than the user to hear the heartbeat. One disadvantage is the greater complexity and cost, and lower reliability of electronic devices.
Embryonic Heart Rates
The opening of the week five fetal heart will accelerate at a rate of 3.3 beats per day for the next month.
The fetal heartrate begins to beat about the same rate as mothers, which is bpm 80 – 85. Below illustrates the approximate fetal heart rate for 5-9 weeks, assuming an initial 80
- Week 5 starts at 80 and ends in bpm 103
- Week 6 starts at 1:03 and ends at bpm 126
- Week 7 starts at 126 and ends at bpm 149
- Week 8 starts at 149 and ends at bpm 172
- In week 9 the fetal heartbeat tends to beat within a range of bpm 155 – 195.
The fetal heart rate started to decline and will generally fall in the number of bpm 120 – 160 to week 12
Forecast Genus
It’s a boy or a girl, old wives tale suggests that the fetal heart rate above the bpm 140 is a sure sign to be a girl and fetal heart rate below the mean bpm 140 is a boy. This theory is based on the fact that girls have the highest metabolism of the boys, unfortunately there is no statistical evidence to verify this story and in fact the evidence shows that there is no relationship between heart rate and sex.
Types of Fetal Doppler
The Dopplers for home or hospital use varies in the following ways:
- Manufacturer – the popular structures are Huntleigh, LifeDop, radio, storks, and Nicolette
- Type of controls – Waterproof or not. The resistant checks are essential for water births.
- Megahertz frequency – 2 or 3 megahertz controls. Most women can find the heart rate with either 2 or 3 megahertz controls. A 2 megahertz check up to detect a heart rate in early pregnancy (8-10 weeks), A 3 megahertz monitoring is recommended for women who are plus size and pregnant.
- Demonstrate Heartrate – some dopplers automatically display the heart rate, other fetal heart rate should be counted by hand.
