AMNIOCENTESIS
What is the test?
Amniocentesis is a procedure used to remove and sample a small amount of
amniotic fluid that surrounds your baby. The fluid can then be tested for
fetal abnormalities, and/or fetal maturity.
What preparation is needed?
The main preparation is making sure you have a full bladder by the time the
procedure is due to start. This is because ultrasound is nearly always used to
guide placement of the needle so that it does not injure the fetus or other
tissue, and ultrasound images are sharpest where the sound waves are passed
through fluid.
How is the test done?
You will be positioned on your back and the skin of your abdomen will be washed
with an antiseptic solution. Next, the ultrasound transducer will be passed
over your abdomen to locate the safest pocket of fluid to draw from. A local
anesthetic will then be injected into your abdomen and a needle passed through
the area that has been numbed. A small amount of amniotic fluid is then
withdrawn and sent to the laboratory for analysis. Depending upon what tests
are ordered, the results may take several days or even weeks.
What can I expect after the test?
You may be placed on the fetal monitor after the procedure to assess fetal
well-being and/or the presence of uterine contractions. Symptoms that you
should report to your doctor after the procedure would include: bleeding or
leaking of fluid from the vagina, fever, cramping or decreased fetal
movements.
It is recommended that you avoid heavy lifting and/or strenuous exercise for 24
hours. Pelvic rest for 24 hours is also recommended.
For more information contact the Medical Imaging Department at
315/470-7551.
