FujiFilm SONOSITE X-PORTE, User Manual

Page: 166 / 366

5-38 Measurements and calculations
Obstetrics calculations
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 3-7 and “Measurement publications and terminology” on page 6-4. 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.
WARNINGS

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 3-7.

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.

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.

To avoid incorrect calculations, verify that the patient information, date, and
time settings are accurate.

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 “Editing patient information” on page 4-31.
Note If you change the calculation author during the exam, the common
measurements are retained.