# ##sey had no idea she had lethal , undiagnosed heart defects . Born with a heart defect that kills 90 % of babies before dying if left undetected . Only realised something was wrong when she suddenly collapsed . doctors revealed she had rare condition where heart was wired incorrectly . Has now undergone corrective surgery and is on track to recover .
Karen MacLachlan had no idea she had lethal , undiagnosed heart condition . Born with a heart defect that kills 90 % of babies before 1 if left undetected . Only realised something was wrong when she suddenly collapsed . Tests revealed she had rare condition where heart was wired incorrectly . Has now undergone corrective surgery and is on road to recovery .