Abstract
OBJECTIVES: Our objective in this study was to compare evaluation and clinical implications of visual versus computerized analysis of nonstress tests. METHODS: Nonstress tests of 575 high-risk patients were analyzed visually and by a computer using the Oxford Sonicaid System 8000. Standard reactivity criteria were used for visual assessment; the System 8000 used an algorithm with the Dawes-Redman criteria. RESULTS: Ninety-six percent of nonstress tests that met Dawes-Redman criteria were reactive by visual analysis; 93% of reactive nonstress tests met Dawes-Redman criteria. Only 30% of tests that failed Dawes-Redman criteria were nonreactive, whereas 44% of nonreactive tests failed to meet Dawes-Redman criteria. Sensitivities, specificities, and positive and negative predictive values were similar for both approaches. Additional tests or interventions would have occurred in 9% of the cases analyzed by System 8000 and in 49% of the cases analyzed visually. CONCLUSIONS: Although these approaches rate nonstress tests differently, their diagnostic performances are similar. Automated fetal heart rate testing may become an acceptable alternative to conventional visual analysis.
Original language | English (US) |
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Pages (from-to) | 1517-1521 |
Number of pages | 5 |
Journal | American journal of obstetrics and gynecology |
Volume | 168 |
Issue number | 5 |
DOIs | |
State | Published - 1993 |
Keywords
- Nonstress test
- computers
- fetal heart rate
ASJC Scopus subject areas
- Obstetrics and Gynecology