Mahwash Mansoor, Sadaf Arooj, Iram Amir, Rukhsana Majeed.
Role of Ultrasound in Foetal Weight Assessment: a Hospital Based Study.
Pak J Med Health Sci Jan ;7(3):785-8.

Aim: To asses the validity of ultrasound scanning in predicting fetal weight. Methods: This comparative cross-sectional study was carried out at Combined Military Hospital, Quetta from December 2007 to May 2008. Fifty cases were included in study fulfilling the inclusion and exclusion criteria. Gynecologist referred patients to radiology department. Fifty Patients fulfilling required inclusion criteria were assessed in radiology department. Single Sonologist took measurements which were biparietal diameter, femur length and abdominal circumference. Hadlock et al lll formula was used for fetal weight estimation. Actual fetal weight was taken after delivery, up to 24 hours and compared with the estimated fetal weight. Results: This was a cross sectional comparative study. Fifty cases were included in study fulfilling the inclusion and exclusion criteria. The result showed that mean of actual fetal weight was 2913±343.78. Mean of estimated fetal weight was 2083± 196.29. Paired sample T test was applied (P 0.000). Standard error of difference between two means were also calculated which was 55.98.This difference of standard error was not even equal to the actual difference between the two means, So the difference of estimated fetal weight and actual fetal weight was statistically insignificant. Conclusion: Ultrasound estimated fetal weight is not accurate and there is statistically insignificant difference between Actual and estimated fetal weight, which means that ultrasound estimated fetal weight is not accurate and ultrasound measured fetal weight should not be used as a gold standard while considering the management of macrocosmic or low birth weight fetus.

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