Norlidar, Mohamed
(2008)
A prospective study of cervical
length measurement in predicting
preterm delivery.
Masters thesis, Universiti Sains Malaysia.
Abstract
To study the cervical length measurement in relation to the outcome of
pregnancy.All patients who attended HUSM antenatal clinic and those who are fulfilled all
the criteria listed are recruited in this study. The participants involved will be
subjected for transabdominal and transvaginal ultrasound at 16-20, 24, 28 and
32 weeks period of gestation for cervical length measurement. At 28 week of
gestation, high vaginal swab will be taken and then subsequently, they will be
having a routine antenatal follow up as scheduled like the other patients who are
not involved in this study till time of delivery.A total of 183 pregnant women have been recruited in this study where 61 of
them had preterm labour. The incidence of preterm delivery in this study was
about 33.3%. Patients with history of previous preterm delivery, miscarriage and
short cervix were predisposed to preterm delivery. In general, the average
cervical length at 16 weeks, 24 weeks, 28 weeks and 32 weeks are 2.82 em,2.78 em, 2.73 em and 2.69 em respectively. Both TVS and TAS in measuring the
cervical length showed significant association in predicting preterm delivery. At a
cut off point of s 2.5 em, transvaginal cervical length showed PPV of 100% in all
gestation in this study except at 32 weeks to predict preterm delivery and was far
by superior compared to T AS. Transvaginal ultrasound at 28 weeks
demonstrated the highest predictive value compare to other gestation in
predicting preterm delivery.Cervical length measurement can be used as an important predictor for preterm
delivery where the length of the cervix is inversely related with risk of preterm
labour. In predicting preterm delivery, the measurement of cervical length by TVS
is more superior than T AS .
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