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The abnormal fetal biophysical profile score. V. Predictive accuracy according to score composition
F A Manning1, I Morrison, C R Harman
1Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Manitoba School of Medicine, Winnipeg, Canada.
American Journal of Obstetrics and Gynecology
|April 1, 1990
Summary
The last abnormal biophysical profile score in fetuses can predict perinatal outcomes, with specific variable combinations offering higher accuracy for certain adverse outcomes. Not all abnormal scores indicate the same level of risk.
Area of Science:
- Perinatal Medicine
- Fetal Monitoring
- Obstetrics
Background:
- The biophysical profile score (BPS) is a common tool for assessing fetal well-being.
- Understanding the predictive value of abnormal BPS, particularly the composition of abnormal variables, is crucial for clinical decision-making.
Purpose of the Study:
- To examine the relationship between the last abnormal biophysical profile score (BPS) and various adverse perinatal outcomes.
- To determine if specific combinations of abnormal BPS variables have differential predictive accuracy for perinatal complications.
Main Methods:
- Retrospective analysis of 525 fetuses with abnormal last BPS.
- Correlation of BPS scores and their variable compositions with a spectrum of perinatal outcome endpoints.
Main Results:
- Highly significant inverse relationships were found between the last BPS and adverse perinatal outcomes, with linear and exponential correlations observed.
- For a BPS of 6, specific variable combinations (e.g., nonreactive nonstress test/absent fetal tone) showed higher predictive accuracy for certain outcomes.
- For a BPS of 4, different combinations demonstrated varying predictive accuracies, while a BPS of 2 showed no significant variation in predictive accuracy across combinations.
Conclusions:
- The composition of abnormal biophysical profile scores significantly impacts their predictive accuracy for adverse perinatal outcomes.
- Clinical interpretation of abnormal BPS should consider the specific abnormal variables present, not just the total score.