Short-term ventriculo-arterial coupling and myocardial work efficiency in preterm infants undergoing percutaneous patent ductus arteriosus closure.

Changes in global longitudinal strain and in myocardial work indices were more pronounced in the infants who developed instability, although these did not reach statistical significance; specifically, GLS decreased by 6.7 ± 3 versus 4.3 ± 3.3% while GWE decreased by 3.5 ± 4.4 versus 2 ± 3.3% in infant with and without instability, respectively. 3.3.

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