Can LOSARTAN be used in children?

my 5 year old has had the Ross-Procedure at age 11 months he also had repair of autograph aortic valve and 2nd replacement of homograph pulmonary valve and partial repair of acending aortic root aneurysum at age 4. He has no mesh or any substance around the aneurysum. he is currently taking Atenolol 25 mg QD. i was wondering if Losartan can be used in children. i have read that is has been show to decrease aneurysums in adult with Marfans.

Thank you,

Rhonda