Evaluation of Aortic Isthmus diameter in 45 fetuses

Sameer, Dikshit
May 2007
Perinatology: Journal of Perinatal & Neonatal Care;May/Jun2007, Vol. 9 Issue 3, p113
Academic Journal
Objective : This study was done to asess the Isthmus diameter in 45 fetuses between 18 and 28 weeks and to compare these findings with reported values from literature. Methods : The study was conducted on 45 women referred to the clinic for sonography examination. They were between 18 and 28 weeks gestation.They had no past history of any medical disorder, no history of drug exposure, they had no family history of congenital heart disease. They had undergone 1st trimester screening and the NT was reported as normal. The fetuses were otherwise normal with respect to sonography findings. Fetal echocardiography was done using 2D and colour doppler. Standard views of the heart were obtained and were confirmed to be satisfactory and normal. When these conditions were satisfied, the patients were included in the study. The Isthmus diameter was measured. From the data, mean diameter, minimum and maximum values and 95% confidence limits were calculated. Results: The Isthmus observations were : - Minimum Diameter- 3.0 mm Maximum Diameter:- 4.5 mm Mean Diameter:- 3.77 mm Upper 95% Confidence Limit :- 5.26 mm Lower 95% Confidence Limit :- 4.07 mm Conclusion: The results showed that the velocities obtained in the Indian population were simillar to those obtained in the western literature.


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