Effect of obesity on preterm delivery prediction by transabdominal recording of uterine electromyography

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• 作者：Miha Lucovnik^a ; ^b ; Linda R. Chambliss^a ; Richard Blumrick^a ; James Balducci^a ; Ksenija Gersak^b ; Robert E. Garfield^a ; ^{drrobertgarfield@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：electrohysterography ; obesity ; preterm birth ; preterm labor ; uterine electromyography
• 刊名：Taiwanese Journal of Obstetrics and Gynecology
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：55
• 期：5
• 页码：692-696
• 全文大小：542 K

文摘

It has been shown that noninvasive uterine electromyography (EMG) can identify true preterm labor more accurately than methods available to clinicians today. The objective of this study was to evaluate the effect of body mass index (BMI) on the accuracy of uterine EMG in predicting preterm delivery.

Materials and Methods

Predictive values of uterine EMG for preterm delivery were compared in obese versus overweight/normal BMI patients. Hanley–McNeil test was used to compare receiver operator characteristics curves in these groups. Previously reported EMG cutoffs were used to determine groups with false positive/false negative and true positive/true negative EMG results. BMI in these groups was compared with Student t test (p < 0.05 significant).

Results

A total of 88 patients were included: 20 obese, 64 overweight, and four with normal BMI. EMG predicted preterm delivery within 7 days with area under the curve = 0.95 in the normal/overweight group, and with area under the curve = 1.00 in the obese group (p = 0.08). Six patients in true preterm labor (delivering within 7 days from EMG measurement) had low EMG values (false negative group). There were no false positive results. No significant differences in patient's BMI were noted between false negative group patients and preterm labor patients with high EMG values (true positive group) and nonlabor patients with low EMG values (true negative group; p = 0.32).

Conclusion

Accuracy of noninvasive uterine EMG monitoring and its predictive value for preterm delivery are not affected by obesity.