Mother hears dead baby's heartbeat inside 4 year old transplant recipient

A woman whose seven-month-old son died after being reportedly abused by a babysitter's boyfriend donated his organs - and has now heard the boy's heartbeat in a young girl.

Heather Clark couldn't hide her emotions as she listened to the heart of four-year-old organ recipient Jordan Drake at Phoenix Children's Hospital.

Donate Life Arizona wrote on Facebook Saturday: 'Amid the unthinkable grief of losing her son Lukas, Heather made a decision that saved three lives.

'Jordan received Lukas' precious heart when she was just 18 months old. 'Yesterday, Heather heard her son's heartbeat for the first time in nearly three years.'

Clark and Drake's mother, Esther Gonzalez, were filmed by KDVR crying and hugging while meeting one another for the first time.

Gonzalez was heard telling Clark: 'I just can't believe this is happening.'

Jordan gifted Clark with a red teddy bear covered in pink hearts that when pressed made a heartbeat sound.

'That's Lukas' heartbeat,' Gonzalez explained, leading to Clark crying. 'Thank you, Jordan,' Clark said. 'It's perfect.'

Clark also put on a stethoscope and placed it upon Jordan's chest, listening to her late son's heart beating.

'It's so strong,' Clark was filmed saying. When she was done, Clark gave Jordan a hug and a kiss.

Jordan later used the stethoscope herself, and heard Clark's heartbeat.  Clark also shared photographs of Lukas at the emotional meeting.

At one point, Clark told Gonzalez in the footage:

'And another amazing thing with donating his organs is it gave me the chance to hold him again.'

Clark said in a January 22 post on the Facebook page Justice For Lukas Scot:

'One week from today I will be listening to Lukas' heartbeat once again. 'I will be holding Jordan in my arms showering her with love and kisses!'