Antenatal magnesium sulphate and delayed passage of meconium: A multicentre study

[Display omitted] The published evidence on the association between magnesium sulphate (MgSO4) and delayed passage of meconium (DPM) is contradictory. To determine whether there is an association between the administration of MgSO4 to the mother and DPM in the neonate, and to analyse serum magnesium...

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Published inAnales de Pediatría Vol. 97; no. 6; pp. 383 - 389
Main Authors Toledano Revenga, Javier, Peña-Moreno, Ana, Arriaga-Redondo, María, Márquez Isidro, Elena María, Gochi Valdovinos, Ainhoa, Blanco Bravo, Dorotea, Sánchez Luna, Manuel
Format Journal Article
LanguageEnglish
Published Spain Elsevier España, S.L.U 01.12.2022
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Summary:[Display omitted] The published evidence on the association between magnesium sulphate (MgSO4) and delayed passage of meconium (DPM) is contradictory. To determine whether there is an association between the administration of MgSO4 to the mother and DPM in the neonate, and to analyse serum magnesium levels in neonates in relation to the cumulative dose of MgSO4 administered to the mother. Retrospective and prospective descriptive and analytical study conducted in patients delivered at or before 32 weeks of gestation in 2 tertiary care hospitals. Delayed passage of meconium was defined as failure to pass meconium within 48 h of birth and/or need for rectal stimulation on 2 or more occasions to pass stool and/or interval of at least 48 h between the first and second bowel movements. The study included 283 patients (204 retrospectively and 79 prospectively), of who 152 (53.7%) experienced DPM. Delayed passage of meconium was not associated with antenatal MgSO4 administration, the cumulative maternal MgSO4 dose or neonatal serum magnesium levels. Older gestational age (OR, 0.8; confidence interval [CI], 0.69–0.93; P = 0.003) was an independent protective factor against DPM, while the need for advanced resuscitation (OR, 2.24; CI 1.04–4.86; P = 0.04) was a risk factor for DPM. The neonatal serum levels of magnesium reached with the doses of MgSO4 administered to mothers were not associated with DPM. Lower gestational age and the need for advanced resuscitation were predictors associated with an increased risk of DPM. La relación entre sulfato de magnesio (MgSO4) y el retraso en la evacuación de meconio presenta resultados controvertidos en la literatura. Determinar si existe relación entre la administración de MgSO4 a la madre y la eliminación tardía de meconio (ETM) en el neonato y conocer los niveles de magnesio en sangre en estos, con respecto a la dosis acumulada de MgSO4 administrada a la madre. Estudio descriptivo-analítico, en pacientes ≤ 32 semanas de edad gestacional, con diseño retrospectivo-prospectivo, llevado a cabo en dos hospitales de tercer nivel asistencial. Se definió la ETM como retraso en la evacuación meconial ≥ 48 horas y/o necesidad de estimulación rectal en ≥ 2 ocasiones para realizar deposición y/o retraso ≥ 48 horas entre la primera y segunda deposición. Se reclutaron 283 pacientes (204 retrospectiva y 79 prospectivamente), de los cuales 152 (53,7%) presentó ETM. No se encontró relación entre la administración de MgSO4 a la madre, ni la dosis acumulada de MgSO4 en esta, ni los niveles de magnesio en sangre del neonato con la presencia de ETM. La mayor edad gestacional (OR 0,8, IC 0,69−0,93, p = 0,003) resultó factor protector independiente de la ETM y la necesidad de reanimación avanzada (OR 2,24, IC 1,04−4,86, p = 0,04) factor de riesgo. Los niveles alcanzados de magnesio en sangre del neonato con las dosis de MgSO4 administradas a las madres, no se relacionan con la ETM. La menor edad gestacional y la necesidad de reanimación avanzada predicen mayor riesgo de ETM.
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ISSN:2341-2879
2341-2879
DOI:10.1016/j.anpede.2022.08.012