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Progression of Right Ventricular Systolic Dysfunction Detected by Myocardial Deformation Imaging in Asymptomatic Preterm Children
Soo Jung Kang1*, Mira Kim1, Seo Jung Hwang2, Hyo Jin Kim2
1CHA University School of Medicine, CHA Bundang Medical Center, Department of Pediatrics
2CHA University School of Medicine, CHA Bundang Medical Center, Department of Diagnostic Laboratory Medicine
Corresponding Author: Soo Jung Kang ,Email: kittysooni@chamc.co.kr
ABSTRACT
BACKGROUND: To detect progression of right ventricular systolic dysfunction in asymptomatic preterm children from infancy to 24-month corrected age, using vector velocity imaging. METHODS: Retrospective study comparing sequential right ventricular longitudinal peak systolic strain from 24 children born at <33 weeks of gestational age and 10 term infants recruited as controls, obtained at a mean of 4-month (first exam) and 24-month corrected age (second exam). RESULTS: In 7/24(29.2%) of preterm children, right ventricular longitudinal peak systolic strain of <16%, defined as right ventricular systolic dysfunction, was detected at the second exam; 5/7 of these children had right ventricular longitudinal peak systolic strain >16% at the first exam, and only 2/7 of these children had a history of moderate or severe bronchopulmonary dysplasia. CONCLUSION: In asymptomatic preterm children, routine echocardiographic screening using vector velocity imaging could detect right ventricular systolic dysfunction which could progress from 4-24 month corrected age.
Keywords: peak systolic strain, preterm, right ventricular systolic dysfunction, cardiac deformation
Volume 25, No 3
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