Echocardiographic reference z scores of right ventricular dimension and systolic function of children aged 5-12 years.

Background: Reference values for right ventricular dimension and systolic function in Nigerian children are scarce despite their high burden of right ventricular abnormalities. Reference values from other countries may not be suitable for use in Nigerian children because of possible racial variations in cardiac size.

Purpose: To develop reference values for right ventricular dimension and systolic function in healthy Nigerian children aged 5-12 years.