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Abstract

AIMS: To evaluate cardiac findings in newborn twins from the general population and investigate if newborn twins may require systematic evaluation of cardiac parameters.

METHODS: Prospective cohort study of newborns with cardiac evaluation performed during the first month of life. Cardiac findings were compared 1:3 with matched singletons.

RESULTS: We included 412 newborn twins (16% monochorionic; 50% boys) and 1,236 singletons. Comparing cardiac findings showed twins had an increased prevalence of non-severe structural heart disease (most common: ventricular septal defects in both groups), thinner left ventricular posterior wall in diastole (LVPWd; 1.82 vs. 1.87 mm, p=0.02), smaller diameter of the left atrium (10.6 vs. 11.1 mm, p=0.04), higher heart rate (148 vs. 144 bpm, p=0.04), more left-shifted QRS axis (106 vs. 111°, p<0.001), and lower maximum R-wave amplitude in V1 (927 vs. 1,015 μV, p=0.02) compared to singletons. After multifactorial adjustment for potential confounders, the effect of twinning on cardiac parameters persisted only for LVPWd (p<0.05).

CONCLUSION: Despite contemporary surveillance, we found an increased prevalence of non-severe structural heart disease in a population-based cohort of newborn twins. However, the effect of twinning on cardiac parameters was modest and generally did not persist after correction for likely confounding factors.

OriginalsprogEngelsk
TidsskriftActa paediatrica
Vol/bind112
Udgave nummer10
Sider (fra-til)2050-2059
Antal sider10
ISSN1651-2227
DOI
StatusUdgivet - okt. 2023

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