I have been advised that I do scans often, but is it safe?
During a normal pregnancy in the United States tend to be only two to three scans (ultrasounds), but this can often vary depending on the hospital, the doctor who takes your pregnancy, and even your location.
However, you may be offered extra scans during your pregnancy to monitor the growth and welfare of your baby. This could be because you had a previous pregnancy complications or file a medical condition such as diabetes or high blood pressure (hypertension). We also made ??additional ultrasounds if you are expecting twins .
Ultrasounds have been used in pregnant women over 30 years and have never been proven harmful effects . But because it is not possible to prove beyond doubt that ultrasound is completely safe, there are guidelines for safe use during pregnancy.
What does the research?
No link has been found between the ultrasound and the baby’s weight at birth, childhood cancers, dyslexia or hearing. One study found a slight increase in the number of left-handed children , but this has not been confirmed by other studies. Most studies were done some years ago, and it is difficult to carry out good quality research today to compare infants who have had ultrasounds with others who were not made, since most women want made to them during your pregnancy ultrasound.
Is ultrasound harmful effects?
Ultrasound uses sound waves to create an image of the baby. The sound of ultrasound is like any ordinary sound, but the tone is so high that you can not hear. There are only two possible harmful effects. One is called cavitation and is that small bubbles form. However, cavitation is not possible to test for pregnancy ultrasound because it can only occur when air is present, and no air inside the uterus.
The other potentially harmful effect is heating, because a portion of the ultrasound energy is absorbed by the body part which is performing the test.
Can harm my baby warm?
Scientists say that increasing the temperature of the tissues in which the test is being conducted 4 degrees Celsius (eg, 36 to 40 degrees C or 96.8 to 104 degrees Fahrenheit) can cause harmful effects. In practice, the two-dimensional ultrasounds are usually performed to obtain images of your baby produce very little heat (less than 1 ° C/1.8 ° F) and is safe to do so for long periods of time without your baby warm all . This is because the ultrasound intensity used is low and dispersed over a wide area. Your baby is moving and the fluid which is helping distribute the heat.
However, the American College of Obstetricians and Gynecologists recommends that women with fever during the first trimester of pregnancy, ultrasound postponed until the fever subsides . In this way helps prevent the theoretical effect that could have the baby – which is more vulnerable during the first 12 weeks of development – the slight increase in temperature caused by ultrasound, coupled with increased maternal body temperature.
What about other types of evidence?
Other tests such as Doppler ultrasound and color proofing, work by concentrating on a small area directed sound waves. Although this is more capable of causing warming, they would remain in the same position for too long to raise the temperature significantly. Doppler ultrasound is used to view the flow of blood, and blood is constantly moving this distributes the heat was produced.
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