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What Does This NT Scan During 14 Weeks Of Pregnancy Indicate?
Doctor My wife is 14 weeks pregnant. NT scan done at 12.6 weeks. Results are Single live intra uterine gestation noted. Fetal cardiac activity is good 158 bpm Liquor is adequate Placenta is Anterior. The crl measures 65mm- 12 weeks 6 days. Nachal Translucency- 1.4mm. Nasal bone visulaised. Ductus venosus shows normal flow. No evidence of Tricuspid regurgitation. Mean p.i. value. 0.79. Screen negative for p.i.h. The cervical length 3.2 cms normal. Impression Single intra uterine gestation if 12-13 weeks maturity. Advice: Tripple test at 18 weeks and Anomaly scan/ Down s profile at 22 weeks. Age: 33 years. Radiologist told that every thing is fine and normal. But our doctor is telling nt 1.4 mm is the border line of Down s syndrome and we are at risk. Is this correct or not ? We are worried a lot. Please help us.
Mon, 15 Dec 2014
Hi, I am Dr. Jayesh will be trying to explain you about the test results
The Normal values for NT is
Any value above this is at risk of Downs Syndrome.
NT measurment is alone not sufficient to predict the risk for chromosomal anomaly. During fist trimester double marker screening is advisable for doing anomaly. Dobule marker screening inculdes measurement of maternal serum free beta HCG and PAPP-A test along with NT which will predict the risk ratio for chromosomal anomaly.
In addtion to this triple marker screening is suggested in second trimester for predicting the risk for chromosomal abnormality which includes USG scan along with maternal serum AFP, Beta HCG and free estriol.
In addition to this integrated screening is also an option whcih performance dobule marker+triple marker screen.
However all all the above test are for risk prediction and not confirmatory. Chorionic villous smapling and amniocentesis are the confirmatory test
So, in my opinion NT vlaue of 1.4mm falls into normal range. You can wait for triple marker screeing and anomaly scan at 22 weeks
The Normal values for NT is
Any value above this is at risk of Downs Syndrome.
NT measurment is alone not sufficient to predict the risk for chromosomal anomaly. During fist trimester double marker screening is advisable for doing anomaly. Dobule marker screening inculdes measurement of maternal serum free beta HCG and PAPP-A test along with NT which will predict the risk ratio for chromosomal anomaly.
In addtion to this triple marker screening is suggested in second trimester for predicting the risk for chromosomal abnormality which includes USG scan along with maternal serum AFP, Beta HCG and free estriol.
In addition to this integrated screening is also an option whcih performance dobule marker+triple marker screen.
However all all the above test are for risk prediction and not confirmatory. Chorionic villous smapling and amniocentesis are the confirmatory test
So, in my opinion NT vlaue of 1.4mm falls into normal range. You can wait for triple marker screeing and anomaly scan at 22 weeks
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