Why the study?
How do left ventricular systolic time intervals adapt to extrauterine circulation in normal newborns?
How do left ventricular systolic time intervals adapt to extrauterine circulation in normal newborns?
Left ventricular performance in newborns shows dynamic changes in the first hours of life, with an initial enhancement followed by a reduction that may coincide with ductal closure.
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Dynamic LV performance shifts in normal newborns should not yet change practice; leaves open ductal closure timing effects for prospective study.
Lundell et al. (1982) studied this question.
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