ACCURACY OF ULTRASOUND IN FETAL SEX AND WEIGHT DETERMINATION IN THE SECOND AND THIRD TRIMESTERS WHEN PERFORMED BY RADIOLOGY RESIDENTS & RECENT GRADUATES

  • tesfaye Kebede legesse AAU
  • Yasimin Hashim Ahmed Alert Hospital
  • Fetiya oumer oumer Police Hospital

Abstract

Background: Ultrasound is one of the non-invasive methods for fetal sex determination and with its introduction visualization of the fetal genitalia has become possible.  Although mainly fetal sex determination is done for parental curiosity it has also some clinical implication. Accurate prenatal Estimated Fetal weight in late pregnancy and labor is extremely useful in management of labor

 

Objective: the study was conducted to assess accuracy of ultrasound in fetal sex and weight determination in 2nd & 3rd trimesters when it is performed by those with lesser experience and exposure

 

Methods: perineal US of the fetus was done on 600 pregnant women with GA of 16 weeks-to-term. Complete data and information was available in only 550 of the study participants. For fetal weight accuracy study, 235 mothers with gestational age of ≥ 38weeks were included. The sex & weight was confirmed at the expected time of delivery through phone calls and for some by revising their medical cards.

 

Results: Out of 570 fetuses ultrasound determined the sex for 527 (92.5%); 287 of whom were female and 240 were male. Overall accuracy was 84.92%. Accuracy for females was 91.63% and for males was 92.08%. Accuracy of ultrasound fetal weight estimation for those with GA>38wks was 85.5%.

Conclusion: Ultrasound is an accurate method to determine the fetal sex and weight even when performed by those less experience and exposure. The over estimation of LBW (Low Birth weight) and under estimation of macrosomia found in ultrasound weight estimation should be given due attention

Author Biographies

tesfaye Kebede legesse, AAU

Body imaging subspecialist

Department of radiology

Addis a baba university

Yasimin Hashim Ahmed, Alert Hospital
Radiologist

References

Pajkrt E, Chitty LS. Prenatal gender determination and the diagnosis of genital anomalies. BJU Int. 2004;93(Suppl 3):12-9 [PubMed]

Stocker J, Evens L. Fetal sex determination by ultrasound. Obstetrics & Gynecology 1977; 50:462-6.

Scholly TA, Sutphen JH, Hitchcock DA, Mackey SC, Langstaff LM. Sonographicdetermination of fetal gender.AJR 1980; 135: 1161–5

Plattner G, Renner W, Went J. Fetal sex determination by ultrasound scan in the second and third trimesters. Obstetrics and Gynecology 1983; 61:454-458.

SifrashMeseretGelaw, HirutBisrat. The role of ultrasound in determining fetal sex.Ethiop. J. Health Dev. 2011;25(3):216-221

Whitlow BJ, Lazanakis MS, Economides DL. The sonographic identification of fetal gender from 11 to 14 weeks of gestation.Ultrasound ObstetGynecol1999; 13: 301–304.

T. Ashrafganjooei,T. Naderi, B. Eshrati and N. Babapoor. Accuracy of ultrasound, clinical and maternal estimates of birth weight in term women.Eastern Mediterranean Health Journal Vol. 16 No. 3 , 2010

S Kumarasiri, R Wanigasekara, L Wahalawatta, L Jayasinghe, T Padeniya, T Dias. Accuracy of ultrasound estimated fetal weight formulae to predict actual birth weight after 34 weeks.Ceylon Medical Journal 2013; 58: 116-121

T. Prior, E. Mullins, P. Bennett, S. Kumar. Accuracy of ultrasound determined estimated fetal weight at term in a low risk population. Ultrasound in Obstetrics & Gynecology 2012; 40 (Suppl. 1): 171–310

Akinola S. Shittu, OluwafemiKuti, Ernest O. Orji, Niyi O. Makinde, Solomon O. Ogunniyi, Oluwagbemiga O. Ayoola, and Salami S. Sule. Clinical versus Sonographic Estimation of Fetal Weight in Southwest Nigeria. J health popul nutr 2007 Mar;25(1):14-23

EO Ugwu, PC Udealor, CC Dim, SN Obi, BC Ozumba, DO Okeke, PU Agu. Accuracy of clinical and ultrasound estimation of fetal weight in predicting actual birth weight in Enugu, Southeastern Nigeria.Nigerian Journal of Clinical Practice , May-Jun 2014 ,Vol 17 , Issue 3

Charles Njoku, CajethanEmechebe, Patience Odusolu,SylvestreAbeshi, ChineduChukwu, and John Ekabua. Determination of Accuracy of Fetal Weight Using Ultrasound and Clinical Fetal Weight Estimations in Calabar South, South Nigeria.International Scholarly Research Notices Volume 2014, Article ID 970973

Atalie Colman, DushyantMaharaj, John Hutton, Jeremy Tuohy. reliability of ultrasound estimation of fetal weight in termsingletonpregnancies.the new Zealand medical journal vol 119 no 1241

Morgan G.Dunne, J.Stephen Cunat. Sonographic determination of fetal gender before 25 weeks Gestation. AJR:140,April 1983.

Published
2019-03-30
Section
Original Article