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Longitudinal development of central SBP in children with congenital heart disease
Laura Willinger1,2, Leon Brudy1, Michael Meyer1
1Department of Congenital Heart Disease and Pediatric Cardiology, Deutsches Herzzentrum München.
Insights
Central systolic blood pressure (cSBP) significantly increases over time in children with congenital heart disease (CHD). This longitudinal rise in cSBP warrants further investigation and focused monitoring in specific patient groups.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Physiology
- Longitudinal Health Studies
Background:
- Central systolic blood pressure (cSBP) is elevated in children with congenital heart disease (CHD).
- The developmental trajectory of cSBP over time in pediatric CHD populations has not been previously studied.
Purpose of the Study:
- To longitudinally assess the natural course of cSBP in children and adolescents diagnosed with CHD.
- To identify factors influencing the progression of cSBP in this cohort.
Main Methods:
- A prospective longitudinal study involving 306 children and adolescents with CHD.
- Noninvasive oscillometric measurement of cSBP over a mean follow-up of 30.1 months.
- Analysis using a linear mixed-effects model to determine cSBP trends.
Main Results:
- cSBP demonstrated a significant annual increase of 1.22 mmHg in children with CHD.
- This increase remained significant after adjusting for sex, BMI, medication, disease severity, and CHD type.
- Higher cSBP increases were observed in patients with transposition of the great arteries (TGA) post-arterial switch, obese children, and boys.
Conclusions:
- This study confirms a significant longitudinal increase in cSBP among children with CHD.
- Further research is needed to determine if these cSBP trajectories are abnormal.
- Monitoring vascular function, particularly in TGA patients and obese children with CHD, is recommended.
Aims:
Central SBP (cSBP) was shown to be increased already in children with congenital heart disease (CHD). However, its development over time has not yet been investigated. The aim of this study was to evaluate the natural course of cSBP over time from longitudinal assessment in children with CHD.
Methods:
In this longitudinal study, 306 children and adolescents (11.3 ± 2.9 years, 34% girls) with various CHD were prospectively examined from July 2014 to May 2022. Over a mean follow-up length of 30.1 ± 18.9 months, 467 follow-up assessments have been conducted. cSBP was noninvasively assessed by oscillometric measurement via Mobil-O-Graph. A linear mixed effect model was performed to examine the course of cSBP.
Results:
cSBP increased significantly over time by 1.22 mmHg per year of age (P < 0.001). The longitudinal increase in cSBP over time remained significant when including sex (b = 0.68, P < 0.001), BMI (b = 1.12, P < 0.001), hypertensive medication (b = 1.13, P < 0.001), disease severity (b = 1.04, P < 0.001), and CHD type (b = 3.74, P = 0.03) in the model. Patients with transposition of the great arteries (TGA) after arterial switch had a significantly higher cSBP increase over time (b = 1.78, P < 0.001). The longitudinal cSBP increase was significantly higher in obese CHD children (b = 2.52, P = 0.005) and in boys (b = 0.85, P < 0.001).
Conclusion:
This study shows a longitudinal increase in cSBP in children with CHD. Whether observed trajectories of cSBP are normal or abnormal needs to be investigated in further studies. Monitoring of the vascular function with a special focus on patients with TGA and obese CHD children seems indicated.
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