Developmental Differences in Left Ventricular Strain in IUGR vs. Control Children the First Three Months of Life

Area of Science:

• Neonatal cardiology
• Pediatric cardiovascular research
• Fetal development and health

Background:

• Intrauterine growth restriction (IUGR) may impact early cardiovascular function.
• Longitudinal data on left ventricular longitudinal strain (LVLS), a body size-independent cardiac measure, is lacking.
• Hypothesized impaired cardiac function in IUGR newborns persisting to 3 months.

Purpose of the Study:

• To investigate cardiac function in newborns with IUGR.
• To assess the persistence of cardiac function impairment at 3 months of age.
• To evaluate left ventricular longitudinal strain (LVLS) as a marker of cardiac health in IUGR.

Main Methods:

• Prospective cohort study comparing IUGR infants with healthy controls.
• Echocardiograms performed at birth and 3-4 months of age.
• Left ventricular longitudinal strain (LVLS) measured and compared between groups.

Main Results:

• No significant difference in LVLS between IUGR and control groups at birth.
• IUGR group showed no significant LVLS change at 3-4 months.
• Control group demonstrated a significant increase in LVLS (P < 0.001) by 3-4 months.
• LVLS was significantly lower in the IUGR group at 3-4 months (P = 0.003).

Conclusions:

• Lack of LVLS increase in IUGR infants suggests a direct impact on cardiac function in early life.
• IUGR may lead to persistent cardiac functional deficits in the first months of life.
• Findings highlight the importance of monitoring cardiac health in IUGR infants.