As a rough guide, the 5th centile mean arterial blood pressure (mmHg) of a preterm infant is equal to the gestational age in weeks.
The 50th centile is +10mmHg. The 95th centile is another +10mmHg.
Reference: Rennie & Roberton’s Textbook of Neonatology, 5th Ed, 2005. London: Churchill.
Previously published: 22/10/13, 04/03/14