Revised and approved by OB faculty at OB faculty meeting February, 2016. If a problem is suspected, a follow-up ultrasound or additional imaging tests, such as an MRI, might be recommended.Discussed and reviewed with OB MFM service January, 2016. If your pregnancy remains uncomplicated, the next ultrasound is typically offered during the second trimester, when anatomic details are visible. Virtual training is a facilitator-led, live online learning event that is delivered in a virtual environment.The first fetal ultrasound is usually done during the first trimester to confirm the pregnancy and estimate how long you've been pregnant. The course will also cover the importance of standardization in obstetrical ultrasound exams. Program topics include review of SmartExam Protocols and the overall functionality of the software.
With this type of fetal ultrasound, a wandlike device called a transducer is placed in your vagina to send out sound waves and gather the reflections. Transvaginal ultrasound. OB-10: High Risk Medications and Substances 47There are two main types of fetal ultrasound exams: OB-9.7: High Risk Group Seven Gestational Diabetes 40 OB-9.8: Hypertensive Disorders in Pregnancy 41 OB-9.9: History of Spontaneous Pre-Term Delivery/History of PPROM 43 OB-9.10: History of Stillbirth 44.
In this situation, a more detailed evaluation can provide additional information about the abnormality. This type of exam might be needed in specific circumstances, such as when a fetal abnormality is known or suspected. Specialized sonographic evaluation. A transabdominal fetal ultrasound is done by moving a transducer over your abdomen.Various other types of transabdominal ultrasounds are available, including: Transabdominal ultrasound. This type of ultrasound also might be done if a transabdominal ultrasound didn't provide enough information.
This exam provides a detailed picture of a baby's heart. It can provide details about a baby's blood flow. A Doppler ultrasound measures slight changes in the ultrasound waves as they bounce off moving objects, such as blood cells. This type of ultrasound is sometimes used to help health care providers detect facial abnormalities or neural tube defects.
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. This exam is typically done between weeks 18 and 20 of pregnancy. 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.
Determine your baby's gestational age. A fetal ultrasound can help your health care provider detect a pregnancy outside of the uterus (ectopic pregnancy). Some fetuses develop outside of the uterus, in the fallopian tube. Confirm the pregnancy and its location. A specialized or detailed exam is done when an anomaly is suspected based on your history or other prenatal exam results.Your health care provider might use fetal ultrasound to:
Evaluate your baby's growth. If your health care provider suspects a multiple pregnancy, an ultrasound might be done to confirm the number of babies. Confirm the number of babies.
An ultrasound can help your health care provider screen for some birth defects. An ultrasound can help evaluate the placenta and amniotic fluid around the baby. Too much or too little amniotic fluid — the fluid that surrounds the baby in the uterus during pregnancy — or complications with the placenta need special attention. The placenta provides your baby with vital nutrients and oxygen-rich blood. Study the placenta and amniotic fluid levels. Ultrasound can be used to monitor your baby's movement, breathing and heart rate.
That doesn't always happen, though. Most babies are positioned headfirst by the end of the third trimester. Determine fetal position before delivery. Your health care provider might use ultrasound to guide needle placement during certain prenatal tests, such as amniocentesis or chorionic villus sampling. Perform other prenatal tests. If you're bleeding or having other complications, an ultrasound might help your health care provider determine the cause.
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. How you prepareYou might be asked to drink a certain amount of fluid or avoid urinating before a fetal ultrasound, depending on the type of ultrasound. Fetal ultrasound might not detect all birth defects — or might incorrectly suggest a birth defect is present when it's not. The lowest amount of ultrasound energy that provides an accurate assessment should be used.Fetal ultrasound also has limitations. Similarly, fetal ultrasound isn't recommended solely for the purpose of producing keepsake videos or pictures.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.Request an Appointment at Mayo Clinic RisksDiagnostic ultrasound has been used during pregnancy for many years and is generally considered safe when used appropriately. Fetal ultrasound isn't recommended only to determine a baby's sex.
Ob Ultrasound Protocol Skin And The
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. 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. Your health care provider or technician will apply a special gel to your abdomen. What you can expect During the procedureDuring a transabdominal fetal ultrasound, you'll recline on an exam table and expose your abdomen.
You'll recline on an exam table and place your feet in stirrups. If you're having a transvaginal ultrasound, however, you'll be asked to change into a hospital gown or undress from the waist down. 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. Ultrasound images can be hard for an untrained observer to decipher. Don't worry if you can't "see" your baby. 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.
Ob Ultrasound Protocol Full Bladder During
If you had a full bladder during the ultrasound, you can urinate after the exam. After the procedureYou can wipe off any residual gel or lubricant. Your health care provider or technician will place the transducer in your vagina.
Ultrasound examination in obstetrics and gynecology. American College of Obstetricians and Gynecologists. Special procedures FAQ025.
American College of Obstetricians and Gynecologists (ACOG) Committee on Practice Bulletins — Obstetrics. Rochester, Minn.: Mayo Foundation for Medical Education and Research 2018. Prenatal screening and testing.
Special tests for monitoring fetal health. Frequently asked questions. American College of Obstetricians and Gynecologists. Frequently asked questions.
Fetal cardiac abnormalities: Screening, evaluation, and pregnancy management.
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