Why the study?
Can embryonic heart rate be used to estimate embryonic age?
Population
275 examinations in which an embryonic heart rate was recorded before the ninth menstrual week, from a…
Design
Cross-sectional
Authors
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EHR may support embryonic age estimation when CRL unavailable; leaves open prospective validation before clinical use.
Can embryonic heart rate be used to estimate embryonic age?
Embryonic heart rate can provide a useful clinical estimate of embryonic age, especially when gestational sac diameters are less accurate.
DuBose et al. (1990) studied this question.
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