'Mighty Girl' Is a Fighter: Tiny Preemie Survives Heart Procedure

Alexandra Van Kirk, known as Sasha, is one of the smallest preemies ever to undergo a life-saving heart procedure at Helen DeVos Children’s Hospital in Grand Rapids, Mich. Helen DeVos Children’s Hospital

Just a bit over 2 pounds, Sasha is one of the tiniest babies to undergo a procedure to open a severely narrowed heart valve.

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