Contraction Stress Test
A contraction stress test is performed to test whether a the fetus can remain healthy even when there is a low oxygen supply, as oxygen
supply may be disrupted during a contraction that usually occurs at delivery.
This test is done when pregnant for 34 weeks or more.
During uterine contractions, the supply of fetal blood and
oxygen is stopped for some time. In most cases, this does not cause problems,
but some fetuses have a reduced heart rate. A decrease in heart rate can be
seen in an external fetal monitoring device.
For a contraction stress test, you are given the hormone
oxitone in the vein, which leads to a labor contraction. You can massage the
nipple to signal the body to release more of this oxitone. If your baby's heart
rate decreases instead of accelerating after contracting, he may have a problem
with normal labor.
If your non-stress test or biophysical profile is abnormal then a
contract stress test is performed. Ultrasound is done during a non-stress test
to measure the physical characteristics of the infant in the biophysical
profile. You can have more than one contract stress test during pregnancy. Diagnostic Centre in Gandhi Nagar
The contract stress
test is done to check that-
·
Will the fetus be able to remain healthy even
when the oxygen level is low due to contractions during delivery?
·
The placenta is healthy and is supporting the
fetus.
The contract stress test is done only when the results of a non-stress
test or biophysical profile are not normal.
Also, know before the
Contraction Stress Test
When the child has no problem, the contract stress test
shows a fall, this is called a false-positive result.
Nowadays the contract stress test is rarely done due to
several reasons. In most cases, the doctor examines the child quickly and
safely with the help of a non-stress test or biophysical profile or both.
Some doctors perform a biophysical profile or a Doppler ultrasound
instead of a contraction stress test. Diagnostic Centre in Gandhi Nagar
How to prepare for
the Construction Stress Test?
·
You can be forbidden to eat and drink anything
for 4-8 hours. You must also empty the bladder before the test.
·
Stop smoking immediately if you smoke, because
smoking can reduce the child's activity and heart rate.
·
You will be asked to sign a consent form,
according to which you understand the risks of the test and agree to it.
·
Talk to the doctor to answer any questions
related to the need for the test, the risks involved, how it is done and its
results.
What happens during a
contra stress test?
You are forbidden to eat and drink anything 6 to 8 hours
before the test; there is a limited possibility that you may be asked for a C
section in an emergency based on the results.
At the time of the test, you will be asked to sleep on the
left side. Two devices are placed on your stomach. One monitors the baby's
heart rate and the other records the contractions in your uterus. The machine
records your contract and the child's heart rate as two separate lines on graph
paper.
The test is carried out over a period of 10 minutes, with
three contracts and each contract lasts 40 to 60 seconds. This may take up to 2
hours. You will hardly feel the contract or feel like cramps during the
periods. It should not be as strong as delivery.
If you do not have a contract in the first 15 minutes, the
doctor will give you small amounts of synthetic oxitone intravenously or ask
for a massage of the nipple for the release of oxytone in a natural way.
What happens after a
contra stress test?
After the test, you are monitored until your contract is
over or slows down to the pre-test position. The test takes 2 hours to finish.
Consult your doctor if you have any doubts about the contract stress
test and understand the advice given. Diagnostic Centre in Gandhi Nagar
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