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Cumulative morphine dose during therapeutic hypothermia in babies with (dotted lines) and without (solid lines) persistent pulmonary hypertension. light gray shade on the bottom indicates cumulative dose at morphine infusion rate <10 μg/(kg·h), dark gray shade indicates infusion rates 10–20 μg/(kg·h) and medium gray shade on top indicates >20 μg/(kg·h) for the first 72 hours.
