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KMID : 0358420150580010024
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Korean Journal of Obstetrics and Gynecology
2015 Volume.58 No. 1 p.24 ~ p.31
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Risk factors differentiating mild/moderate from severe meconium aspiration syndrome in meconium-stained neonates
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Choi Won-Eui
Jeong Hee-Jeong
Choi Suk-Joo
Oh Soo-Young
Kim Jung-Sun
Roh Cheong-Rae
Kim Jong-Hwa
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Abstract
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Objective: The aim of this study was to compare the risk factors associated with mild/moderate meconium aspiration syndrome (MAS) with those associated with severe in meconium-stained term neonates.
Methods: Consecutive singleton term neonates (n=671) with meconium staining at birth from all deliveries (n=14,666) in our institution from January 2006 to December 2012 were included. Both maternal and neonatal variables were examined. Among the study population, for women who underwent the trial of labor (n=644), variables associated with labor were also examined. These variables were compared between the mild/moderate MAS group, the severe MAS group, and the MAS-absent group.
Results: MAS developed in 10.6% (71/671) of neonates with meconium staining at birth. Among the neonates with MAS, 81.7% had mild MAS, 5.6% had moderate MAS, and 12.7% had severe MAS. The presence of minimal variability was significantly increased in both the mild/moderate and the severe MAS groups. The frequencies of nulliparity, fetal tachycardia, and intrapartum fever were significantly increased in the mild/moderate MAS group, but not in the severe MAS group. While a longer duration of the second stage of labor was significantly associated with mild/moderate MAS, severe MAS was associated with a shorter duration of the second stage. Notably, low mean cord pH (7.165 [6.850-7.375]) was significantly associated with mild/moderate MAS, but not with severe MAS (7.220 [7.021-7.407]) compared with the absence of MAS (7.268 [7.265-7.271]).
Conclusion: Our data suggest the development of severe MAS is not simply a linear extension of the same risk factors driving mild/moderate MAS.
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KEYWORD
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Meconium aspiration syndrome, Risk factors
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