Heart rate and systolic time intervals in healthy newborn infants: Longitudinal study

Abstract

To determine the influence of heart rate (HR) on systolic time intervals (STI) in neonates, serial measurements of right ventricular (RVSTI) and left ventricular systolic time intervals (LVSTI) were made on 30 healthy term newborn infants at age 4–8 h, 24–30 h, eight days, and four weeks. STI was related to HR and age. Age-related changes were similar to… (More)
DOI: 10.1007/BF02336549

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