Fig. 5

MAP in preterm babies by postnatal age. Mean BP (mmHg) and 90% reference ranges (1.64SD) for preterm infants with GA 22⁰–23⁶ weeks, 24⁰–27⁶ weeks, 28⁰–31⁶ weeks, and 32⁰–36.⁶ weeks. Results report from 1 h to 2–3 months postnatal age, sorted in descending order of prematurity, and within those by PNA. The labels on the vertical axis give the following information: author & year_(subgroup, if applicable)_GA_PNA_method where method is method of BP measurement used (D = Doppler, I = intra-arterial, O = oscillometric, C = noninvasive photoplethysmographic cuff, S = Sphygmomanometer)