Palpitation of the fetus by week: norm

At the time of pregnancy, the main indicator of the life of the fetus is palpitation. At occurrence of malaises the rhythm instantly changes, signaling about occurrence of problems. That's why doctors try to follow the dynamics of the heartbeat throughout the whole period. With the approach of childbirth, the indicator will gradually change.

The First Knocks of the Heart

Indication of the frequency of strokes is a fundamental characteristic of the normal course of pregnancy. Therefore, midwives look so closely at the fetal heartbeat from the earliest possible time. It should be noted that the development and final formation of the vascular system of the baby continues until the last weeks of pregnancy.

Every mom wants to quickly hear the heartbeat of her baby, but in the early stages of doing this without special equipment will not work. Only high-tech means (ultrasound, cardioscope) can reveal the first cuts in the arteries. And this procedure will give results only from the 5th week of pregnancy. The heart is placed in the embryo at the end of the first obstetric month. Closer to the 5th week the organ acquires the shape of a hollow tube. It is during this period that the first reductions appear. To study such a weak heartbeat is possible only through ultrasound scanning (transvaginal sensor). However, many gynecologists recommend doing the first ultrasound from the 7th week. At this time, the heartbeat is determined through the transabdominal sensor.

At home, the frequency of contractions with a stethoscope begins to be audible only towards the end of the fifth midwinter month.

Heart rate per week

To study the frequency of artery wall contractions in the fetus can be at any time of pregnancy after the first month until the onset of labor. However, it is not recommended to do this until the 6th week, since the heart organ is still sufficiently formed. Too frequent ultrasound is also undesirable, as they harm the embryo. It is best to follow the schedule of planned examinations, compiled by the attending physician.

The norm of palpitation of the fetus for weeks, starting from the 6th to the 8th, will be 110-130 beats per minute. The nature of the abbreviations can be different. The blows must be clear and clear. A deaf rhythm may indicate the presence of a chronic or acute form of hypoxia. Palpitation of the fetus for weeks of girls (during the entire third obstetric month) should be about 160-180 bpm. In this case, the repetitions of the abbreviations should be in equal intervals of time. This indicator is called rhythm. The palpitation of the fetus for weeks of boys in the third obstetric month should be in the range from 170 to 190 beats per minute.

It is important that during this period of time the frequency of reductions is normal. In the first trimester, in children, cardiac abnormalities are often diagnosed. If the frequency of contractions is more than 200 bpm, then you can talk about the presence of tachycardia. If the heartbeat is less than 100 beats per minute, then it will be a matter of insufficiency. Both diseases are a sign of pathology of the embryo and require special treatment.

Palpitation of the fetus for weeks (from the 13th to the time of delivery) should be from 140 to 160 beats / min. This rate indicator is the same for boys and girls. It is worth knowing that in the second trimester, the occurrence of arrhythmia is possible. This disease is characteristic of a fetus with oxygen deficiency or congenital heart disease.

Control methods: listening

The easiest and most common way to determine the heart rate, starting with the 20th week of pregnancy, is auscultation. This procedure allows you to listen for abbreviations using a stethoscope. At this time the frequency of fetal heartbeat for weeks will already be noted in the form of double rhythmic beats. When auscultation, doctors also determine the nature of the contractions (deaf or clear). The norm of the heartbeat while listening to the stethoscope will be 40-60 strokes in 20 seconds.

Since the 24th week of pregnancy, auscultation is possible in any part of the uterus. During childbirth plays are conducted every 15 minutes.

Ultrasound

The first ultrasound examinations are allowed from the 6th week, but the planned examination is only at the end of the second obstetric month. At such early terms, the doctor can determine the presence of contractions and their approximate frequency.

Fetal heart rate for weeks with ultrasound:

- from 110 to 135 bpm. (Second obstetric month);
- from 165 to 185 beats / min. (Third obstetric month);
- from 140 to 165 beats per minute. (Since the beginning of the second trimester). Ultrasound scanning is the most accurate way to determine the heart rate and identify pathology.

Control methods: cardiography

This kind of study of heart rhythm is carried out only from the 28th week of pregnancy. It is worth noting that for the entire period the procedure for cardiography is allowed only once. Repeatedly carried out it is shown only with late gestosis, small or polyhydramnios, an infectious disease, scar on the uterus, early aging of the placenta. In these cases, the heartbeat of the fetus is listened to for weeks in dynamics.

The procedure takes from 40 to 60 minutes. After this, the doctor evaluates the study. The normal frequency for cardiography is 135-165 bpm. The measurements are carried out in a calm and active state of the fetus.

Echocardiography

Palpitation of the fetus for weeks of pregnancy can also be investigated with the help of a special ultrasound scanner, which determines not only the frequency of contractions, but also the peculiarities of the structure of blood vessels and blood flow. This procedure was called echocardiography. The most indicative it will be throughout the second trimester. Diagnosis by echocardioscope is prescribed in the presence of heart defects, with infectious disease, with diabetes maternal, with late pregnancy (after 38 years), with suspicion of delayed fetal development.

During the procedure, several types of scanning are applied at once: one- and two-dimensional ultrasound, as well as Doppler mode. The norm of frequency of reductions in echocardiography will be 140-160 beats per minute.

Heartbeat Detector

Instruments of this kind of ultrasound are absolutely safe for mother and child. In addition, they are very convenient to use in the hospital and even at home. Detectors do not just determine the frequency of cuts, but also "visually" demonstrate their character.

During the procedure, you can listen to the fetal heartbeat (from the end of the first trimester). This has a soothing effect on the mother, therefore, normalizes the psychoemotional state of the child. The palpitation of the fetus for weeks, determined by the detector, should be in the range from 130 to 175 beats / min. The duration of one diagnosis is 8-10 minutes. Listening to the heartbeat of the fetus for weeks, it should be remembered that the indices should not deviate from the norm by more than 20 beats per minute. If this is observed, then this indicates a pathology.

The number of procedures for an ultrasound detector can be up to 5-6 times throughout the gestation period.