The three boys and three girls, who were born to a 35-year-old teacher at a Hamad Town school and a Batelco employee, were delivered after a 25-week pregnancy, said hospital obstetrics department head Dr Amal Hassani.
"All of the six born yesterday are stable and seem to be in good condition, but we will have to wait and see how they progress within the next two days," said Dr Hassani.
The children were delivered by caesarean section after the mother went into labour early morning yesterday.
The mother already has a five-year-old daughter, said the sources.
"The six have been put under the care of neo-natal intensivists, who are monitoring their condition on a minute-to-minute basis," said Dr Hassani.
"Since such premature children have a very high chance of developing complications, like breathing problems and heart conditions, they have to be monitored constantly."
She said the chances are that all the children would pull through successfully.
Other members of the team which conducted the successful operation were Dr Haytham Rahma, Dr Rajini Muthukrishnan, Dr Shadi Al Shabah and Dr Sharifa Abdul Rasool.