Paper gestational age wheels generally inaccurate

Paper gestational age wheels generally inaccurate

(HealthDay)—Paper wheels are inaccurate for estimating date of confinement, according to a study published in the February issue of the American Journal of Obstetrics & Gynecology.

Linda R. Chambliss, M.D., M.P.H., from St. Joseph's Hospital and Medical Center in Phoenix, and Steven L. Clark, M.D., from the Hospital Corporation of America in Nashville, Tenn., compared the estimated date of of paper gestation wheels with electronic technique (APPs) wheels using a standard last menstrual period. The last menstrual period was set at Jan. 1, 2013 and the date of confinement was estimated from 31 paper wheels and using 20 downloadable electronic APPs. The date given was compared with the expected date of Oct. 8, assuming a pregnancy of 280 days.

The researchers found that 10 wheels (35 percent) gave an estimated date of confinement consistent with the standard pregnancy duration. The largest discrepancy seen with paper wheels was four days short of 280 days. The estimated date of confinement differed from one another by seven days in two wheels. There was no concurrence between wheels from the same source. All 20 APPs gave an estimated date of confinement of Oct. 8, in accordance with pregnancy of 280 days. The APPs, but not the paper wheels, corrected for leap year.

"Precision in gestational age assessment is critical in a variety of clinical settings and heightened by the focus by payers and reporting agencies on elective deliveries before 39 weeks," the authors write. "The use of paper gestational age wheels should be abandoned."

More information: Abstract
Full Text (subscription or payment may be required)

Related Stories

Shark Wheel on a roll to reinvent skateboarder experience

date Jun 11, 2013

(Phys.org) —A California-based company has a new kind of wheel for skateboards that delivers a novel shape and claims a special ride experience. This is the Shark Wheel, not circular, not square, but something ...

Recommended for you

Rotational instrument delivery OK for fetal malposition

date Mar 24, 2015

(HealthDay)—Neonatal outcomes are no worse with rotational instrumental delivery than with cesarean delivery for persistent fetal malposition, according to a study published in the March issue of the American Jo ...

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.