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In Reply.
Prompted by our study,1 Evans et al raise several issues, the central one being the usefulness of maintaining arterial blood pressure as a means of ensuring adequate cerebral blood flow (CBF).
First, they "disagree that this can be ensured solely on the basis of a mean blood pressure (MBP) of >30 mm Hg." In response, we would wholeheartedly agree, because the complexity of CBF regulation and the range of clinical conditions influencing the circulation of sick preterm infants would make such an approach clinically simplistic. Recognizing this, we have been at pains to avoid leading readers to the
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