What should I expect before chorionic villus sampling (CVS)?
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Dr. Michael Roizen answered:To prepare for your chorionic villus sampling (CVS) test, drink water heavily beforehand—you'll need a full bladder. Your doctor will first perform an ultrasound to assess the baby's position and the orientation of your uterus in order to determine whether she'll do the CVS vaginally, threading a catheter through your cervix, or abdominally, via needle biopsy.
You might experience slight cramping during and after the procedure, as well as light spotting if you had it done vaginally. You should plan to have someone drive you home and take it easy for the rest of the day. By the following day you should feel fine; if you experience increased bleeding, vaginal discharge, or fever, call your doctor immediately. Some docs will have you come in a few days after the procedure for a follow-up ultrasound just to make sure everything is okay. Results will be ready in one to two weeks.To prepare for your chorionic villus sampling (CVS) test, drink water heavily beforehand—you'll need a full bladder. Your doctor will first perform an ultrasound to assess the baby's position and the orientation of your uterus in order to... More -
Healthwise answered:You may be asked to drink a glass of fluid about an hour before a sampling of chorionic villus so that your bladder is full. A full bladder makes it easier to do the test.
You will need to sign a consent form that says you understand the risks of chorionic villus sampling (CVS) and agree to have the test done. Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done or what the results will mean.
Be sure to tell your doctor if you are allergic to any medicines, such as numbing medicines (local anesthetics), before the procedure.
You may be asked to drink a glass of fluid about an hour before a sampling of chorionic villus so that your bladder is full. A full bladder makes it easier to do the test. You will need to sign a consent form that says you understand the... More -
Intermountain Healthcare answered:Before you have the chorionic villus sampling (CVS) procedure, you'll discuss the test with your doctor. You may also meet with a genetic counselor -- a medical professional who can also help you evaluate your risk and your options for prenatal testing. Topics for discussion include:
- Your risk for a child with a genetic disorder. Your provider and genetic counselor can help evaluate your risk based on factors such as your family history, age, ethnic group, and so on.
- CVS's potential benefits, risks, and alternatives. Your doctor will discuss any potential benefits, risks, or alternatives that may apply to your situation.
- What the test results can tell you about this pregnancy. With more than 99% accuracy, CVS can tell you whether your pregnancy is affected by a genetic disorder. You and your provider can discuss which genetic disorders your CVS should test for. Some disorders, such as Down syndrome, are routinely tested for, but tests for some other problems must be specifically ordered. Note that test results may prompt your doctor to suggest additional testing. Also realize that a normal result does not guarantee a normal baby.
Prior to your CVS, your blood type will be reviewed. If you are Rh negative (a particular blood type), you may need an injection after this or any other procedure during pregnancy.
On the day of your procedure, you should arrive at the hospital or clinic with a full bladder. Other than this, there is no special preparation needed for CVS.Before you have the chorionic villus sampling (CVS) procedure, you'll discuss the test with your doctor. You may also meet with a genetic counselor -- a medical professional who can also help you evaluate your risk and your options for... More
