Journal of perinatology : official journal of the California Perinatal Association
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To quantify cerebrovascular autoregulation as a function of gestational age (GA) and across the phases of the cardiac cycle. ⋯ Premature infants have low and usually pressure-passive diastolic CBF velocity. By contrast, the regulation of systolic CBF velocity by pressure autoregulation developed in this cohort between 23 and 33 weeks GA. Elevated effective cerebral perfusion pressure derived from the CrCP was associated with dysautoregulation.