On their third trip to India, Rhonda and Gerry Wile finally heard a sound they thought they might never hear: the heartbeat of their unborn child.

Four nerve-racking months after that joyful ultrasound moment, their son arrived on Aug. 26 at 10:22 p.m. weighing 2.7 kilograms and sporting wisps of dark hair. They named him Blaze Xennon Wile, the middle name chosen from a book of baby names that gave its meaning as "from a foreign or faraway land."

"It seems unreal. We hold him and kiss him a thousand times a day," Mr. Wile says. "It's so lucky that it worked...