Officers Matt Malcolm and Rachel Morgan rushed a surgeon to hospital through crawling traffic so she could perform an emergency surgery.

A baby received life-saving surgery after her doctor and Auckland police combined for a dash through the city's gridlocked traffic.

Paediatric heart surgeon Elizabeth Rumball was called into Starship children's hospital on Sunday evening for the emergency surgery, only to find traffic around south Auckland very heavy and the motorway "blocked".

"Then it came to me, possibly contacting the police might be the answer," she said.

NZ POLICE Paediatric heart surgeon Elizabeth Rumball was grateful to the Papakura police for getting her there on time.

Rumball called 111 and the operator directed her to Papakura police station.

READ MORE:

* Cop helps man who threatened to harm him

* Cop on the beat helps deliver roadside baby in Milton

* Hoax caller from overseas makes the mistake of trying to scam a police officer

When she got there, officers Matt Malcolm and Rachel Morgan were waiting for her and then "blue-lighted" her all the way to the hospital.

With the police car's sirens and flashing lights parting traffic, the officers were able to get Rumball to Starship in 10 minutes flat.

"We were just grateful that we were able help her to get hospital in time," Constable Morgan said.

The icing on the cake came later, when Rumball called to let police know the good news - the baby had survived the surgery.

"I really just want to thank the New Zealand police for the amazing response I got ... you have no idea the difference that that made," Rumball said.

Morgan said it was one of the better work stories, with the best possible outcome.

"Every day we attend jobs, and every now and then we deal with one job that stays with us and just makes us feel better at end of the day."