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Obstetrics calculations
Warning: Make sure that you have selected the Obstetrics exam type and the OB author for
the Obstetrical calculation table you intend to use. See "Obstetrics calculations settings " on
page 41.
Warning: To avoid incorrect obstetrics calculations, verify with a local clock and calendar
that the system’s date and time settings are correct before each use of the system. The
system does not automatically adjust for daylight savings time changes.
Warning: Prior to use, verify that Obstetrical custom table data entries are correct. The
system does not confirm the accuracy of the custom table data entered by the user.
Warning: To avoid incorrect calculations, verify that the patient information, date, and time
settings are accurate.
Warning: To avoid misdiagnosis or harming the patient outcome, start a new patient form
before starting a new patient exam and performing calculations. Starting a new patient form
clears the previous patient’s data. The previous patient’s data will be combined with the
current patient if the form is not first cleared. See "Entering patient information" on page 76.
In X-Porte, you can calculate gestational age, fetal heart rate, middle cerebral artery, and umbilical
artery blood flow velocities.
You can select authors for Obstetrical calculations. See "Obstetrics calculations settings " on page 41
and "Measurement references " on page 264.
EFW is calculated only after appropriate measurements are completed. If any one of these parameters
results in an EDD greater than what the Obstetrical calculation tables provide, the EFW is not
displayed.
Note: If you change the calculation author during the exam, the common measurements are retained.
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