Having a normal vaginal birth after previous babies were delivered surgically is perfectly safe and women should have the option, independent experts told the National Institutes of Health.

They said there is no good reason to force a woman who has had one Caesarean section to repeat such operations if she wants to try having later babies more naturally.

The experts cited "rigorous research" showing that at least trying natural labor is successful in nearly 75 per cent of cases, and women are less likely to die if they are allowed to labor naturally for a while, even if they end up delivering surgically.

"Declining vaginal birth after Caesarean rates and increasing Caesarean delivery rates over the last 15 years would seem to indicate that planned repeat Caesarean delivery is preferable to a trial of labor," Dr F Gary Cunningham, chairman of the NIH expert panel, said in a statement.

"But the currently available evidence suggests a very different picture: a trial of labor is worth considering and may be preferable for many women," added Dr Cunningham, the chairman of obstetrics and gynecology at the University of Texas Southwestern Medical Center at Dallas.

The panel cited two recent surveys of hospital administrators that showed 30 per cent of hospitals had stopped offering women the option of trying labor if they had undergone one Caesarean. Some doctors fear that the incisions from the first operation could burst open during the pressure of contractions, endangering mother and baby.

But studies have shown the rate of rupture is less than 1 per cent.

The American College of Obstetrics and Gynecology does not recommend vaginal delivery for women who have had three or more C-sections.

Rates of Caesarean sections have risen steadily in the US, from 20.7 per cent of births in 1996 to 31.1 per cent in 2006. And nearly 40 per cent of the Caesareans performed in the US each year involve women who have had previous C-sections.

The issue has become controversial, with some lobby groups pressing hard for women to be given the option of having vaginal birth after Caesarean, or VBAC.

"There's still a lot we don't know about which women will be successful in having a VBAC, but we believe it's essential that women's desires and preferences be respected throughout the decision-making process," Cunningham said. – Reuters