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Dystocia rate constant despite risk factors: parity, c-section, birth weight studied.

OB GYN News

| May 15, 2003 | Sullivan, Michele G. | COPYRIGHT 2003 International Medical News Group. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

WASHINGTON -- Shoulder dystocia appears to occur at a constant rate, despite increased cesarean sections and variations in other risk factors, Dr. Michael Lucas reported at the annual meeting of the Society for Gynecologic Investigation.

"It seems counterintuitive," said Dr. Lucas of the University of Texas, Houston, in an interview. "There's this notion that if we manipulate the risk factors we should see a lower rate of shoulder dystocia, but that does not appear to be the case."

His study of more than 12,650 births in two Houston hospitals showed a similar rate of shoulder dystocia, despite differences in the risk factors of parity, birth weight, cesarean delivery, and operative vaginal delivery between the two hospital populations. The findings could have implications in the defense of shoulder dystocia cases.

"The argument has always been that there are risk factors for shoulder dystocia, which the physician should have acted on," he said. "Our data suggest this is not true. It may at least be argued that we can take a population with a much different rate of risk factors and have virtually the same rate of shoulder dystocia. This is important clinically, because it supports the notion that our options and our ability to avoid trauma with this complication are limited."

Dr. Lucas researched the obstetric databases of an urban public hospital and a community teaching hospital, both in ...

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