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Obstetric Ultrasound Configuration (XR Settings)
The following XR Settings are available to configure the CRIS Obstetric Ultrasound and Fetal Anomaly
modules.
APPOINT.ObsAdultAge
Age at which patients are considered adults for obstetric ultrasound appointment letters
This setting is used to define at what age Obstetric Appointment letters should be addressed directly to the
patient, rather than the ‘Parent or Guardian’. This is typically between 12 – 14 years old rather than the usual
16 years old as per all other modalities.
REPORT.ObsAllowEFWbyACOnly
Calculate the EFW if FL and BPD not entered but AC is present
This setting is turned ‘On’ by ‘Default’ and uses Campbell AC Only Equation. The Trust therefore need to
consider if this is a setting which should be Turned Off (i.e. Set to ‘No’) as ‘AC Only’ is often considered to be
the least accurate EFW (Estimated Fetal Weight) calculation method. If ‘Turned Off’ the EFW field will not be
filled in if only AC is entered.
REPORT.ObsEDDCalcOrder
Order to perform EDD Calculations
It is now possible to change the EDD calculation order for one or more obstetrics forms using the XR setting
REPORT.ObsEDDCalcOrder. This can be configured at XRTR (Trust) level to allow the Trust to override
default EDD calculations – i.e. prioritise HC over CRL on dating scans.
If left blank CRIS will default to the standard North West scan forms calculations methods for EDD as follows:
EARLY SCAN (ENW) - EDD captured at previous scan, if this is not present then EDD calculated on CRL.
DATING SCAN (DATNW) - EDD captured at previous scan, if this is not present then EDD calculated on CRL, if this is not present then EDD
calculated on BPD.
ANATOMY (ANATNW) / DETAILED SCAN (DETNW) - EDD captured at previous scan, if this is not present then EDD calculated on HC, if this
is not present then EDD calculated on FL, if this is not present EDD calculated on BPD.
GROWTH SCAN (GROWNW) - EDD captured at previous scan, if this is not present then EDD calculated on HC, if this is not present then EDD
calculated on FL, if this is not present EDD calculated on BPD.
Consequently, to override the default EDD calculation of CRL for the Dating scan it would simply be a case of
entering the following via the XR Value:
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datnw = hc crl fl bpd or to apply this to more than one scan you should use a semi colon – i.e. datnw
= hc crl fl bpd ; anatnw = hc fl bpd
REPORT.ObsEDDCutOffDays
Number of days before EDD is validated
This setting is used to determine the No. of Days before the EDD is validated. The Trust will need to define
the No. of Days (i.e. 56 Days – 8 weeks) after which the EDD is considered accurate and will be carried
through on all subsequent scans. Alternatively, prior to this date EDD will be recalculated on each subsequent
scan, but recorded for reference on the original scans.
REPORT.ObsEDDPrintedBelowCutOff - New
Number of days before EDD is validated
This setting is used to control whether or not the EDD is printed on the Obstetric report based on customer
preference. The EDD can always be printed, never printed, or printed depending on fetal heartbeat for
gestational ages when the scan takes placed prior to the EDD validation cut-off for North West scan forms.
Options are Yes = Always Print, No = Never Print and FHBP = Print only if Fetal Heartbeat Present.
REPORT.ObsEFWPriority
Set the EFW calculation equation priority
The default configuration of CRIS is to calculate the EFW using the equation priority as follows:
If the AC and FL are entered then CRIS uses the Hadlock 1 formula, If AC and BPD are entered then CRIS
uses the Shepherd equation, If only AC is entered then CRIS uses the Campbell equation, unless configured
so that this equation is ignored.
CRIS can however be configured using this setting to change the order of equation priority from the default.
Changing the default priority order will also allow the users to choose a specific equation for calculating the
EFW on this report.
Please note: Unless otherwise stated HSS recommend H2,H1,S (Hadlock 2, Hadlock 1 and Shepherd).
REPORT.ObsLMPEDDMargin
Difference in days before measurement EDD overrides LMP EDD
This setting is used to define the maximum number of days variance allowed between the EDD calculated by
LMP, and by Measurements. This is ‘10 days’ by default but can be modified by the Trust to specify the No. of
Days before the EDD by LMP calculation is ignored in favour of measurements.
REPORT.ObsOutcomeExam (For Use with Fetal Anomaly Module Only)
The examination used to record Pregnancy Outcomes
This field is used to define the examination which should be used for Obstetric ‘Postnatal’ Outcome Reports.
It is recommended that the Trust add the examination ‘ZOUTFA’ - Fetal Anomaly Outcome Report to the
Examination Codes table via all CRIS instances (i.e. Live, Test and Training) and ensure that the Modality is
set as ‘O’ in order for this feature to function correctly.
REPORT.ObsRescanDays
/
REPORT.ObsRescanDays2
and
REPORT.ObsRescanTitle
/
REPORT.ObsRescanTitle2 – New
Number of Days after which an Anatomy or Growth Scan should be booked with user definable description.
It is now possible to configure the system to include projected rescan dates for Anatomy / 20 week and
Growth Scans and to define the description displayed against these fields via the Dating Scan forms.
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If fields are left blank the default is Anatomy Scan 20 weeks (i.e. 140 Days). However the following 20 Week
Scan and Growth Scan projected dates have been configured via XRTR (Trust):
20 WEEK SCAN
REPORT.ObsRescanDays = 140
REPORT.ObsRescanTitle = 20 Week Scan
GROWTH SCAN
REPORT.ObsRescanDays = 238
REPORT.ObsRescanTitle = Growth Scan
REPORT.ObsSDValue
The standard deviation modifier for the obstetric graphs
This setting is used to override ‘Centile Display on Graphs’ should the Trust wish to change the displayed
values. The lower and upper centiles as displayed on the graphs show 3rd and 97th centiles by ‘Default’. For
3rd and 97th this would be blank (default) or 1.88. For 5th and 95th this should be set to 1.5. For 10th and
90th this should be set to 1.28.
REPORT.ObsSacVolume
Does the obstetrics module calculate sac volume instead of mean sac diameter?
Used to control if the CRIS Obstetrics system should calculate the ‘Sac Volume’ from measurements rather
than displaying the mean value. Set to ‘No’ by ‘Default’.
REPORT.ObsShowMeasurementRange
Replace the + / - days on an obstetric report with a measurement range indicator
This is set to ‘Yes’ by ‘Default’ and displays a graphical representation of the normal measurement range. If
set to ‘No’ CRIS will instead display Measurement variance as +/- 2 days although HSS do not recommend
this approach unless discussed with the HSS PM or CRIS Helpdesk.
REPORT.ObsUseLMPForEDD
Use LMP when generating suggested EDD
The use of LMP to calculate EDD is not enabled on the North West Scan forms by ‘Default’. This setting is
therefore designed to enable this if required by the Trust, and on condition that the ‘LMP’ field is completed
via the ‘Event Details’ prior to reporting.
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Document Control
Title
Author
File Ref.
2.09.10 Obstetric Reporting Configuration
Date Created
Emma Savage-Mady
30/04/2010
RIS_CRIB296_2.09.10e_Obstetric_Reporting_Configuration_v1.2
Approval Sign-off
Owner
Role
Method of approval
Date
Emma Savage-Mady
Training / Documentation
Manager
Verbal
30/04/2010
Approver
Role
Method of approval
Date
David Costin
Trainer / Application
Specialist
Verbal
14/06/2010
Change History
Issue
Date
1.0
30/04/2010
1.1
14/06/2010
1.2
04/07/2011
Author / Editor
Emma Savage-Mady
Emma Savage-Mady
David Costin
Review Date
14/06/2010
Last Updated: DC 04/07/2011
Details of Change
First Issue
Amendment to XR configuration screenshot
Amendment to show version number for 2.09.10e
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