![]() A combination of several Doppler parameters was superior to a single parameter, although the parameters were strongly correlated with each other. In conclusion, pathological Doppler velocimetry of the uterine and uteroplacental circulation was a powerful predictor of PPIH and/or IUGR in high-risk pregnancies, identifying a group in which 58.3% would suffer from disease later in pregnancy. None of the patients showed bilateral notching. Here PPIH and/or IUGR was seen in 6.1-6.4% in the group with abnormal Doppler findings compared to 5.2% in pregnancies with normal findings. However, Doppler was less powerful in the population at low risk. However, the combination of all parameters was superior to a single parameter, and a bilateral notch was superior to a unilateral notch in terms of minimizing false-positive results. The criterion for the definition of pathological Doppler results, whether persistent notching, the resistance index (RI) of the main stem uterine artery, or the RI in the arteries of the uteroplacental bed, was of minor importance, as all Doppler parameters were strongly correlated. In this group PPIH and/or IUGR was found in 58.3%, compared to 8.3% if Doppler results were normal. In the high-risk group a single pathological Doppler sign accounted for an additional three- to four-fold increased risk, and the combination of all three pathological signs, a seven-fold additional risk for later disease. Doppler proved to be more efficient at predicting a complicated pregnancy in those patients who were at high risk: a positive medical history alone was associated with a three-fold greater risk of developing PPIH and/or IUGR. The incidence of proteinuric pregnancy-induced hypertension (PPIH) and intrauterine growth retardation (IUGR) were recorded as main outcome measures. ![]() Persistent notches in the main stem uterine arteries and elevated resistance indices of > 0.68 in the uterine arteries and > 0.38 in the uteroplacental arteries were defined as abnormal waveforms. Using duplex pulsed wave Doppler ultrasound, we recorded blood velocity waveforms from both main uterine arteries, the uteroplacental arteries in the region of placental implantation and the umbilical artery at 21-24 weeks of gestation. You can even use it in a dark room as the back-lit screen display makes the FHR result visible without turning the lights on.During a 20-month period we studied 175 pregnant women at high risk for hypertensive disorders of pregnancy or intrauterine growth retardation, and 172 patients at low risk, in a prospectively designed cross-sectional trial. The device has an LCD screen with a TFT color display, a combination that results in superior picture quality with sharp visuals 24/7. The curve display gives you a snapshot of the BPM across a specific timeframe, while the BPM reading displays the FHR in numerical form. ![]() The fetal heartbeat is displayed in two modes - curve display and Beats Per Minute (BPM) reading. Outside the medical setting, Fetalplus is the only FDA-approved fetal doppler I can confidently recommend to women who want to safely check in on their baby between 9 to 12 weeks.įetalplus’ simple build makes it easy to use. Here’s why this is important - most pregnant women want the freedom to check in on the baby throughout their pregnancy, especially when even a faint heartbeat is a meaningful experience for the parents to realize that bond with their baby. The reason is simple - Fetalplus effectively detects fetal heart rate (FHR) as early as 9 weeks (12 weeks tend to be the norm with most fetal dopplers). Also, turn off the device once the baby starts moving.įetalplus owns a well-deserved top spot on my list of best fetal dopplers. If you can’t find the heartbeat within one or two minutes, stop trying.
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