A baby born weighing just 245g (8.6oz), believed to be the tiniest on record to survive premature birth, has been discharged from hospital in the US.

Axar.az reports citing BBC.

Baby Saybie weighed the same as a large apple when she was born at 23 weeks and three days in December 2018.

Fighting for life, she was transferred to the intensive care unit at Sharp Mary Birch Hospital in San Diego, California.

Doctors told Saybie's parents she had just hours to live.

But five months on, she was discharged weighing a healthy 5.6 pounds (2.5kg), confounding all expectations.

A nurse who cared for Saybie as she battled for survival said her recovery and release earlier this month was a "miracle".

The Tiniest Babies Registry said Saybie is thought to be the world's smallest surviving premature baby.

The previous record was held by a baby girl from Germany, born weighing 252g (8.9oz) in 2015, according to the registry, operated by the University of Iowa.

A baby, born weighing just 268g (9.45oz) in Japan earlier this year, is thought to be the smallest boy to have survived premature birth.

Saybie's mother gave birth to the little girl by emergency C-section three months ahead of schedule after she was diagnosed with pre-eclampsia - a pregnancy complication involving high blood pressure which can prove fatal for mother and baby.

In a video released by the hospital, the mother described the birth as the "scariest day of my life".