Can pulmonary hypertension resolve when my babies chronic lungs grow?

Sometimes: Newborns don't have as many alveoli as do adults so many chronic problems in childhood can be grown out of such as lung damage from use of a ventilator as a neonate but other conditions grow with the child and usually worsen such as cystic fibrosis so it depends on the cause of the problem.

Depends: If the pulmonary hypertension is a result of the lungs having damage(rds) then when the lung improve the pulmonary HTN may improve also, if the pulmonary HTN is present by itself then the disease could be more chronic.

PH: It depends on the type of pulmonary hypertension (ph). You should discuss this with your pediatrician.

Maybe: Depends on the cause. If chronic lung disease is the result of extreme prematurity (< 28 weeks), the pulmonary hypertension is largely due to an under developed pulmonary vascular bed (smaller arteries and fewer branches). This may not improve, even with good growth and nutrition. While they may improve, it often becomes apparent again after the growth spurt associated with adolescence.