Correlation Between Gestational Age Estimated Using Last Menstrual Period, Ultrasonogram, and the New Ballard Score
Rina Dhyanti Permatasari, Novina, Muhammad Alamsyah Aziz, Uni Gamayani, Aris Primadi
Abstract
Background: There are various methods for estimating the gestational age (GA), yet the examiner’s ability and experience influence the GA estimated using ultrasonogram (USG) and the New Ballard Score (NBS).
Aim: To determine the correlation of GA estimated using the last menstrual period (LMP), USG, and NBS, to help health care workers determine the method of estimating GA if the LMP is unknown
Materials and Methods: Analytical research of medical records of deliveries that happened between February 1 and April 30, 2020, was conducted using cross-sectional methods, at the Department of Child Health and the Department of Obstetrics and Gynecology of Dr Hasan Sadikin General Hospital (Bandung, West Java, Indonesia). Pearson correlation was used to analyze the data.
Results: Of the 216 mother–neonate pairs, most neonates were male, and most of the women were multigravida. USG examination was primarily performed in the third trimester. Based on the LMP, USG, and NBS, most of the neonates were in the moderate-term to late-preterm category. Pearson correlation results showed a strong correlation between the GA estimated using LMP and USG, LMP and NBS, as well as USG and NBS.
Conclusion: GA estimations assessed using LMP, USG, and NBS were strongly correlated.
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