什么是胎儿超声?

Fetal 超声波 is a test used during pregnancy. 它创造了一个形象 the baby in the mother's womb (uterus). 这是一种检查健康的安全方法 一个未出生的婴儿. During a fetal 超声波, the baby’s heart, head, and spine 是 evaluated, along with other parts of the baby. 测试可能是 done either on the mother’s abdomen (transabdominal) or in the 阴道 (经).

There 是 several types of fetal 超声波:

• 标准的超声波. The test uses 声波 to create two-dimensional images on a 电脑屏幕.
• 多普勒超声. This test shows the movement of blood through the umbilical cord, in the baby’s heart, or between the baby and the placenta.
• 三维超声. This test shows a lifelike image 一个未出生的婴儿.

Ultrasound uses an electronic wand called a transducer to send and receive 声波. No radiation is used during the procedure. 传感器是 moved over the abdomen, and 声波 move through the skin, muscle, 骨头和液体以不同的速度移动. 声波从婴儿身上反射回来 like an echo and return to the transducer. 换能器将 声波 into an electronic image on a 电脑屏幕.

为什么我需要胎儿超声检查?

Fetal 超声波 is a routine part of prenatal c是 in the U.S. 这是 because it’s a low risk procedure that gives important information. A routine prenatal 超声波 can check for defects or other 问题 in the 胎儿. 可以检查以下内容:

• 腹部和胃部
• 手臂、腿和其他身体部位
• 后颈
• 头部和大脑
• 心脏腔和瓣膜
• 肾脏
• 胎盘位置
• 脊柱
• 脐带
• 膀胱

胎儿超声还可以显示:

• If a woman is pregnant with multiple babies
• 胎龄婴儿的胎龄
• Where to place the needle during removal of amniotic fluid (羊膜穿刺术)
• 少数是否生长正常

你的 healthc是 provider may have other reasons to request a fetal 超声波.

What 是 the risks of fetal 超声波?

所有的手术都有一定的风险. 该手术的风险包括:

• Mild discomfort from the transducer on the abdomen or in the 阴道
• Reaction to a latex covering for the transducer, if you have a latex 过敏

In some cases, an 超声波 may appear to show a problem that is not there 所谓的假阳性. The test can also miss a problem that is there 被称为假阴性. In some cases, additional testing may be needed 胎儿超声检查后.

Fetal 超声波 is sometimes offered in nonmedical settings. 完成了 as a way to give keepsake images or videos for p是nts. 在这些情况下， it’s possible for untrained staff to misread the images and give p是nts 不正确的信息. Make sure to have fetal 超声波 done by trained 医务人员. Talk with your healthc是 provider if you have questions.

你的 risks may vary depending on your general health and other factors. 问 your healthc是 provider which risks apply most to you. 讨论任何 你可能有顾虑.

How do I get ready for fetal 超声波?

你的 healthc是 provider will explain the procedure to you. 问任何一个 你们可能有问题. You may be asked to sign a consent form that gives 允许做手术. 仔细阅读表格. 问问题 什么都不清楚.

如果出现以下情况，请告知您的医疗保健提供者:

• Are sensitive to or allergic to any medicines, latex, tape, or anesthetic medicines (local and general)
• Take any medicines, including prescriptions, over-the-counter medicines, vitamins, and herbal supplements

You may be asked to drink several glasses of water before the procedure. 这有助于提供更清晰的图像.

What happens during a fetal 超声波?

You may have your procedure as an outpatient. 这意味着你可以回家了 同一天. Or it may be done as part of a longer stay in the hospital. The way the procedure is done may vary. 这取决于你的身体状况 你的医疗保健提供者的方法. 在大多数情况下，这个过程会 遵循这个过程:

1. If you 是 having a transabdominal 超声波, you will be asked to raise your shirt to expose your abdomen. 对于阴道超声检查， you will be asked to remove your clothes from the waist down. 你会 be given a sheet to place over your legs. 你可能会被要求离开 珠宝或其他物品.
2. 你会 lie on an exam table, either on your back or on your side.
3. For a transabdominal procedure, a clear gel will be placed on the skin 你的肚子(腹部). The transducer will be moved over the 是a and 紧贴在皮肤上.
4. 对于阴道超声检查， you will need to lie on your back. 你的 feet will be in stirrups and your knees apart.
5. A 阴道l transducer probe will be covered with a sterile cover. A 将润滑剂涂在探针上. 探针将被插入 阴道. The technician will move the probe around to capture a series 的图片. 然后取出探针.

胎儿超声检查后会发生什么?

你会 be given tissue to wipe off excess gel. 你很快就可以回家了 测试结束后. 你的 healthc是 provider will talk with you about the 结果. You may get other instructions after the procedure.

下一个步骤

Before you agree to the test or the procedure make sure you know:

• 测试或程序的名称
• The reason you 是 having the test or procedure
• What 结果 to expect and what they mean
• The risks and benefits of the test or procedure
• What the possible side effects or complications 是
• When and where you 是 to have the test or procedure
• Who will do the test or procedure and what that person’s qualifications 是
• What would happen if you did not have the test or procedure
• Any alternative tests or procedures to think about
• 你何时以及如何得到结果
• Who to call 测试结束后 or procedure if you have questions or 问题
• How much will you have to pay for the test or procedure