cut aneous ▁AS D ▁closure ▁among ▁ped iat ric ▁and ▁adult ▁population ▁show ▁that ▁this ▁is ▁relatively ▁sa fer ▁procedure ▁and ▁has ▁better ▁out comes ▁with ▁increasing ▁hospital ▁volume . ▁ ▁Ep ide mi ology ▁As ▁a ▁group , ▁at rial ▁sept al ▁defect s ▁are ▁detected ▁in ▁one ▁child ▁per ▁ 1 5 0 0 ▁live ▁birth s . ▁P FO s ▁are ▁quite ▁common ▁( app ear ing ▁in ▁ 1 0 – 2 0 % ▁of ▁adult s ), ▁but ▁when ▁asympt om atic ▁go ▁und i agn osed . ▁AS D s ▁make ▁up ▁ 3 0 ▁to ▁ 4 0 % ▁of ▁all ▁con gen ital ▁heart ▁dise ases ▁that ▁are ▁seen ▁in ▁adult s . ▁ ▁The ▁ost ium ▁sec und um ▁at rial ▁sept al ▁defect ▁accounts ▁for ▁ 7 % ▁of ▁all ▁con gen ital ▁heart ▁les ions . ▁ ▁This ▁les ion ▁shows ▁a ▁male : f em ale ▁ratio ▁of ▁ 1 : 2 . ▁ ▁References ▁ ▁Add itional ▁references ▁ ▁External ▁links ▁▁ ▁At rial ▁sept al ▁defect ▁information ▁for ▁parents . ▁ ▁Category : C ong en ital ▁heart ▁defect s ▁Category : D iving ▁medicine <0x0A> </s> ▁New port ▁News ▁Middle ▁Gr ound ▁Light ▁is ▁a ▁l ighth ouse ▁near ▁the ▁Mon itor - M err im ac ▁Memorial ▁Bridge - T unnel ▁on ▁Inter state ▁ 6 6 4 ▁in ▁Ham pton ▁Ro ads . ▁It ▁is ▁the ▁oldest ▁ca isson ▁l ighth ouse ▁in ▁Virginia . ▁