Clinical and sonographic estimations of uterine weight.
Over a 36 month period, all hysterectomies with clinical assessment, sonographic measurement of uterine length and estimated uterine weight were reviewed. Accuracy of these methods was ascertained by: 1) mean error, 2) mean standardized error, and 3) percentage of estimates within 10% of the actual weight. Among 210 hysterectomies, the mean (+/- standard deviation) of uterine weight was 514.9 gm +/- 647.0 gm (range 54-6700 gm) with 135 specimens (64.3%) being 500 gm and 75 > 500 gm. The receiver-operating curves for clinical assessment (0.82 +/- 0.03), uterine length (0.87 +/- 0.03) and Linear Regression Equation (0.82 +/- 0.04) are not significantly different (P > 0.05), having similar abilities to differentiate uterine weight. The clinical estimate of uterine weight is as accurate as ultrasound in determining a uterus weighing > 500 gm but all three methods poorly predict actual uterine weight.
Departments of Obstetrics and Gynecology, Spartanburg Regional Medical Center, Spartanburg, South Carolina, USA.
Nancy W
NW
Hendrix
Suneet P
SP
Chauhan
C Shannon
CS
Carroll
Everett F
EF
Magann
John C
JC
Morrison
D000328:Adult; D005260:Female; D006801:Humans; D007044:Hysterectomy; D009929:Organ Size; D010808:Physical Examination / Q000379:methods; D011237:Predictive Value of Tests; D011247:Pregnancy; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014463:Ultrasonography; D014591:Uterine Diseases / Q000473:pathology / Q000601:surgery; D014599:Uterus / Q000000981:diagnostic imaging* / Q000473:pathology*