As she listened to "each heartbeat the sense of hope became stronger".

The finding challenges the current view on how the heartbeat is controlled, which may have clinical implications.

"Imagine, for example, a heart implant that bends and flexes with each heartbeat but still lasts for years."

“My chest is wheezing. I have an irregular heartbeat,” said Uribe, who’s gone to the emergency room because he couldn’t breathe.

An ultrasound confirmed there was no fetal heartbeat and indicated the miscarriage wasn’t complete.