Abstract
Objective
To study cardiovascular response to minimally invasive surfactant therapy in preterm infants with and without foetal growth restriction (FGR).
Design
Poractant alfa was administered and echocardiograms were performed before and 30 min after. FGR infants were compared with those appropriate for gestational age (AGA).
Results
Ten FGR infants were compared with 20 AGA infants (gestation [weeks], 28.9 ± 2 vs. 28.6 ± 1, p = 0.55 and birthweight [g], 813 ± 157 vs. 1141 ± 257, p = 0.01, respectively). The change in echocardiographic parameters was more prominent in AGA infants ([global contractility] fractional area change [FAC, %], FGR, 24.7 ± 2.2 to 27.9 ± 0.4, p = 0.08 vs. AGA, 26.6 ± 3 to 30.5 ± 1, p < 0.01, and [longitudinal contractility] tricuspid annular plane systolic excursion [mm], FGR, 3.9 ± 0.3 to 4.6 ± 0.5, p = 0.003 vs. AGA, 4.6 ± 0.3 to 5.5 ± 0.4, p = 0.0001). Significant difference was noted for change in FAC (%), FGR 2.1 ± 1.7 vs. AGA 4.1 ± 1.2, p = 0.02.
Conclusions
Differential cardiovascular response to minimally invasive surfactant therapy amongst FGR infants may reflect an in-utero maladaptive state.
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AS—conception of the study, data acquisition, analysis and interpretation. Wrote the first draft and revised critically. RB—conception of the study and the protocol for MIST. Data analysis and interpretation. Revised draft for important intellectual content. CTR—conception of the study and the protocol for MIST. Data analysis and interpretation. Revised draft for important intellectual content.
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Sehgal, A., Bhatia, R. & Roberts, C.T. Cardiovascular response and sequelae after minimally invasive surfactant therapy in growth-restricted preterm infants. J Perinatol 40, 1178–1184 (2020). https://doi.org/10.1038/s41372-020-0682-5
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DOI: https://doi.org/10.1038/s41372-020-0682-5
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