INTRAPARTUM FETAL MONITORING
FETAL HEART RATE
Cardiotocograph - CTG
Electronic Fetal Monitoring - CTG - Cardiotocograph
Obstet
Gynecol. 1993 Jul;82(1):8-10
Electronic fetal monitoring in the United States in the 1980s.
University of New Mexico College of Nursing, Albuquerque.
Objectives:
To measure the frequency with which electronic fetal monitoring was used for childbirth in United States hospitals in the 1980s and to examine variation in use according to risk factors at labor onset.
Methods:
Two data sets from the National Center for Health Statistics (the 1980 National Natality Survey and the 1988 National Maternal and Infant Health Survey) were used to generate proportional frequencies for electronic fetal monitoring use. These data files are based on representative samples of live births (9941 and 9953, respectively) drawn by probability methods from the entire country during a calendar year. Consistency in the sampling methods and questionnaire procedures, and use of sampling weights, permitted national estimates to be generated.
Results:
Use of electronic fetal
monitoring increased from 44.6% of live births in 1980 to 62.2% in 1988.
In both time periods, low-risk women received monitoring more frequently
than did women with risk indicators. Use grew by 64% in low-risk women
(from 46.5% in 1980 to 76.3% in 1988) but only by 32% in women with risk
conditions at labor onset (from 42.6% in 1980 to 56.2% in 1988).
Conclusions:
Use of electronic fetal monitoring increased during the 1980s, disproportionately so for low-risk women. This trend raises questions about the efficacy of monitoring for improving pregnancy outcomes.













