Doppler fetal heart rate meter

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Doppler fetal heart rate meter

characteristic:

Dynamic display,

High sensitivity, big probe, clear sound, low power, high performance, intelligent dynamic monitoring,

4.5cm large screen, real voice, fetal health, ready to grasp,

± 1bpm, precise, compact and convenient, with fetal heart rate memory function.

Applicable scenarios: pregnant office / at home baby / go out for a walk / travel during pregnancy.

usage method:

one Press the on / off button to turn on the instrument.

two Apply coupling agent to the probe.

three Move the probe to find the right fetal heart position (please contact the probe directly with the skin)

Methods to find fetal heart sound accurately:

Apply an appropriate amount of couplant, slowly move the probe, and carefully look for fetal heart sound. After hearing fetal heart sound, you must continue to move the probe, find a clear, resonant and rhythmic position, and keep the probe still after finding it. The fetal heart rate displayed after 3-5 seconds is the accurate fetal heart rate. When the gestational age is large, if strong fetal movement may cause fetal displacement, the probe should be moved again to find the fetal heart position. The probe can be placed according to the position where the doctor listens to the fetal heart during the hospital examination, and then it can be moved slowly and searched carefully.

When measuring the fetal heart rate, pregnant women should lie flat or half lying, keep calm and move less.

Measurement position:

Early pregnancy (16-24): three points on the left, middle and right below the abdominal cistern.

Second trimester (24-32): midline and four points below the navel.

Third trimester (32-40): four points extending outwards in the oblique direction of the abdominal cistern.

When the fetus is less than 5 months old, the fetal heart position is usually under the umbilicus and on both sides of the midline of the abdomen. When the fetus is 6-8 months old, the fetal heart position will also move up as the fetus grows up. Because fetal movement is usually fetal hands and feet in motion, so the right side feel fetal heart rate frequently, fetal heart rate is generally on the left side, when the left side feel fetal heart rate frequently, fetal heart rate is generally on the right side. Head and breech position can also affect the position of fetal heart, because fetal heart sounds come from the back of the fetus, and can be heard most clearly at the back of the fetus near the scapula, so the head position fetal head can be heard on both sides of the abdomen. The lateral position can be heard in the midline of the abdomen above or below the umbilicus.