| 摘要 |
A method and apparatus for monitoring the location of a fetus in a birth canal during labor. The conductors of a fetal monitor probe, such as a fetal heartbeath monitor electrode, are marked with calibration means corresponding to pedetermined distances from a babyward end of the probe. The babyward end of the probe is attached to the baby. During labor, the position and progress of the fetus in the birth canal may be inferred by observing the calibration means relative to the outer end of the birth canal.
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