Ultrasound Prediction of Discordant Twins in Surin Hospital
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Abstract
Background: The discordant birth weight in twins is associated with perinatal morbidity and mortality. There were previous studies using ultrasound to predict discordant fetal growth in twins and their results were different in accuracy. This study, therefore, to determine the accuracy of ultrasonic prediction for further practical application.
Objectives: To determine the accuracy of ultrasonographic in diagnosis of discordant twins by the difference of BPD, FL, AC and EFW in Surin hospital.
Setting: Department of obstetrics and gynecology, Surin hospital.
Study design: Retrospective study (diagnostic test).
Methods: A medical records review of twin pregnant women who delivery in Surin hospital during 8 May 2004 to 22 April 2010 with gestational ages > 28 weeks and the twins were not identified as fetal demise or anomaly.
Result: Among 374 twins, discordance was found in 68 cases, therefore, the prevenlence was 18.18%. The smaller infants of discordant twins had significantly lower birth weight,lower 1-minute APGAR score and lower 5-minute APGAR score than those of concordant twins. For predicting discordant growth by ultrasonography; sensitivity rate of intra-pair difference in AC and EFW were 70% and 70% while specificity rate were 81.25% and 77.88% respectively, in which higher than those of intra-pair difference in BPD and FL.
Conclusion: For predicting discordant growth by intra-pair difference, the accuracy of AC and EFW are higher than those of BPD and FL. Therefore AC and EFW have potential as discordant growth predictors which can be apply to practice.
Keywords: Ultrasound, prediction, discordant twins
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References
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