Dating ultrasound risks


Benefits of baby ultrasound

If a problem is suspected, a follow-up ultrasound or additional imaging tests, such as an MRI, might be recommended.

First trimester ultrasound examination is done to evaluate the presence, size and location of the pregnancy, determine the number of fetuses, and estimate how long you've been pregnant gestational age. Ultrasound can also be used for first trimester genetic screening, as well as screening for abnormalities of your uterus or cervix. In the second or third trimester a standard ultrasound is done to evaluate several features of the pregnancy, including fetal anatomy.


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  • Why it's done;
  • The Truth About Baby Ultrasound.

This exam is typically done between weeks 18 and 20 of pregnancy. However, the timing of this ultrasound might be altered for reasons such as obesity, which could limit visualization of the fetus. During the second and third trimesters, limited ultrasound evaluation might be needed when a specific question requires investigation.

How is an ultrasound performed?

Examples include the evaluation of fetal growth and the estimation of amniotic fluid volume. A specialized or detailed exam is done when an anomaly is suspected based on your history or other prenatal exam results. Fetal ultrasound should be done only for valid medical reasons.

What types of ultrasound are there?

Fetal ultrasound isn't recommended only to determine a baby's sex. Similarly, fetal ultrasound isn't recommended solely for the purpose of producing keepsake videos or pictures.

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Benefits and risks of ultrasound in pregnancy.

If your health care provider doesn't suggest a fetal ultrasound but you'd like the reassurance an ultrasound can provide, share your wishes with your care provider so that you can work together to determine what's best for you and your baby. Diagnostic ultrasound has been used during pregnancy for many years and is generally considered safe when used appropriately. The lowest amount of ultrasound energy that provides an accurate assessment should be used. Fetal ultrasound also has limitations. Fetal ultrasound might not detect all birth defects — or might incorrectly suggest a birth defect is present when it's not.


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  7. You might be asked to drink a certain amount of fluid or avoid urinating before a fetal ultrasound, depending on the type of ultrasound. When scheduling your ultrasound, ask your health care provider for instructions. Also be aware that fetal ultrasound can be done through the vagina transvaginal or over the abdomen transabdominal , depending on why it's being done or the stage of your pregnancy.

    If you're having a transabdominal ultrasound, consider wearing loosefitting clothing so that you can easily expose your abdomen.

    Benefits and risks of ultrasound in pregnancy.

    During a transabdominal fetal ultrasound, you'll recline on an exam table and expose your abdomen. Your health care provider or technician will apply a special gel to your abdomen. This will improve the conduction of sound waves and eliminate air between your skin and the transducer. Your health care provider or technician will move or scan the transducer back and forth over your abdomen.

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    The sound waves reflected off your bones and other tissues will be converted into images on a monitor. Your health care provider or technician will measure your baby's anatomy. He or she might print or store certain images to document important structures.

    The Dangers of Ultrasound and Alternatives.

    You'll likely be given copies of some of the images. Depending on your baby's position and stage of development, you might be able to make out a face, hands and fingers, or arms and legs. Don't worry if you can't "see" your baby. Ultrasound images can be hard for an untrained observer to decipher.


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    • Risks of baby ultrasound: Safety has not been proven.

    Ask your health care provider or technician to explain what's on the screen. The procedure for other types of fetal ultrasound exams is similar. The general belief exists that diagnostic ultrasound DUS does not pose any risk to the pregnant patient nor to her fetus.

    Ultrasound Scans- Cause for Concern

    Nonetheless, ultrasound is a form of energy and, as such, demonstrates effects in biological tissues it traverses bioeffects. The physical mechanisms responsible for these effects are thermal or non-thermal mechanical. It is the role of science to show whether any of these bioeffects may be harmful. A risk-benefit analysis may also be important, as well as education of the end users to assure patients' safety.

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