Description of the study doppler in pregnancy

Future mom undergoes a doppler Doppler ultrasound can measure how sound waves from body tissues are reflected. The information is processed by the computer, and then the decryption is displayed on the monitor in the form of a two-dimensional color image. Doppler for pregnant women allows you to determine in a timely manner how well the fetus is developing, to exclude all possible threats to the life and health of the mother and baby.


  • Principle of operation of the Doppler
  • Indications for carrying out the doppler
  • Is it necessary to pass the doppler during pregnancy?
  • How does the procedure work?
  • Is it dangerous to hold a doppler?

Principle of operation of the Doppler

Doppler, or in other words, dopplerography, is called the scientist Christian Doppler. The Austrian physicist lived back in the 19th century and studied the effects of ultrasonic waves. He discovered that ultrasound reflected from moving objects with varying frequency.

The doctor holds a Doppler device This ultrasound allows you to study the flo

w of blood, diagnose the speed of blood flow and the diameter of the vessels. Modern devices that operate on the elusive human ear frequencies of sound above 20,000 Hz are used to study the state of soft tissues. This method is practically harmless for both the pregnant woman and the fetus.

The ultrasound is reflected from the vessels, so that the device then transforms the information into an image that the doctor understands.

Ultrasound, administered during pregnancy, is recognized to determine placental blood flow. If there are slightest abnormalities or abnormalities in the "mother-placenta-fetus" system, they will necessarily be identified.

There are two types of doppler research. The duplex method allows one to examine the vessel itself, to see how correctly the blood flow passes through it. The triplex method is more extended - it adds a color dynamic image of red blood cells to duplex ultrasound. This method is more accurate, gives the most detailed picture of the course of pregnancy.

Indications for conducting a doppler

To date, carrying out a routine ultrasound is mandatory for all expectant mothers. It is done at least twice during the entire pregnancy. Most often, the doctor appoints such a survey at 22 - 24 weeks and at 32 - 34 weeks. If no deviations are found, then two procedures are sufficient to make sure that the fetus develops without deviations from the norm.

If necessary, the doctor may prescribe an additional study - doppler. Indications for him are the following diagnoses:

  • multiple pregnancy;
  • pyelonephritis;
  • hypertension;
  • Rh-conflict between mother and child;
  • discrepancy of the development status of the fetus during pregnancy;
  • large size of the fruit;
  • pelvic presentation;
  • gestosis;
  • chronic diseases in the mother( diabetes, thyroid dysfunction, autoimmune diseases);
  • unsatisfactory results of cardiotocography;
  • pre-eclampsia;
  • threat of placental abruption;
  • presence of pathologies in previous pregnancies.

Results of US doppler It must be understood that the doppler is different from conventional ultrasound and is prescribed only when there are prerequisites for this. Such a survey can not establish the sex of the child, display its image on the monitor. Doppler scans the vascular system of the placenta and the baby to determine if enough oxygen it receives, how healthy the fetal heart is, how the vascular system develops.

The interpretation of the results of such a study by a qualified doctor allows you to identify in time possible risks, change the scheme of pregnancy management, determine which process of delivery will be most favorable for the mother and child. Thanks to this, it is possible to prevent pathologies in the development of the fetus, to correctly appoint treatment in time, to give recommendations to the mother, which will facilitate her condition during the fetal gestation.

Do I have to undergo doppler during pregnancy?

Unlike conventional ultrasound, doppler is not necessary for passage. Despite this, doctors often prescribe it to future parturients after the 30th week of gestation. If there are such prerequisites as hypoxia, diabetes, gestosis, high blood pressure, Doppler is prescribed at 20-24 weeks.

Additional indications for ultrasound in the second trimester are multiple pregnancies, unsatisfactory analyzes, Rh-conflict.

The circulatory pattern shown on the screen gives the doctor a full understanding of what recommendations to assign to a woman. Often the results of the survey give rise to additional diagnostics, procedures and analyzes.

The doctor consults a pregnant woman Direction to the doppler - this is not an excuse to consider that pregnancy passes with deviations. Due to the high level of informativeness and accuracy of results today, most obstetrician-gynecologists prefer doppler conduction. This procedure should be carried out by a qualified technician in order to obtain correct results.

How does the procedure work?

The self-examination takes 15 - 20 minutes. Before it is not required to follow a special diet. The procedure is very similar to conventional ultrasound. The future mother should be in a horizontal position, lying on the couch. A special gel is applied to the abdomen and the research process begins.

First the doctor studies the placenta and uterus, carefully examines placental blood flow. Then he carefully looks through the individual vessels of the brain, the umbilical cord. In many respects the professionalism of the specialist depends on the objectivity of the results.

The doctor does ultrasound and looks at the screen The image on the screen shows the general picture, which the expert carefully examines. The device itself can also decrypt the results and display it on the screen. In the complex, the professionalism of an experienced doctor and the results of a doppler allow you to learn a lot about the health of your baby and anticipate the process of childbirth.

Is it dangerous to hold a doppler?

Future mothers are often afraid to undergo various examinations, especially ultrasound, considering them harmful to the baby.

In fact, ultrasound does not affect the development of the fetus.

But this ultrasound on time determines hypoxia, or in other words, oxygen starvation in a child. It shows whether there is a cord with the umbilical cord, determining its degree - single, triple, double.

As an example, if there is an umbilical cuff, the doctor appoints a cesarean section to save the baby's life and facilitate the process of childbirth. The diagnosis of hypoxia is also not dangerous if it is detected in a timely manner. Ultimately, all the examinations are aimed only at finding pathologies in order to prevent them.

Mom and baby smile To date, doppler in pregnancy is a very effective method of research and diagnosis, which is widely used not only in obstetric practice. Such an ultrasound during its existence allowed to reveal many pathologies that saved lives, preserved health to millions of kids, made their parents happy.

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