|Procedures: Stress/Non-stress Tests|
- Non-Stress Test (NST) . The non-stress
test has been a popular method of foetal surveillance for postterm pregnancies,
however there is evidence to suggest that it is not an effective method
of foetal surveillance.
- Contraction Stress Test (CST) . Both nipple
stimulation and intravenous oxytocin have been used as mechanisms for
inducing . The test results
appear in some populations to correlate with outcome and some obstetricians
prefer this test method of foetal surveillance. The disadvantages are
that it takes time to administer and, in the case of oxytocin challenge
test, requires an intravenous infusion.
In a high-risk pregnancy, is sometimes used as part of a nonstress test,
in which the foetus' heart rate is monitored as the foetus lies still
and moves. If the heart rate doesn't increase with movement, a contraction
stress test may be performed. The foetus' heart rate is then monitored
during the induced contractions to determine whether the foetus will be
able to survive labour.
The information in this page is presented in summarised form and has been taken
from the following source(s):
Hygeia Foundation : http://hygeia.org/
(def;articles & more)