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What Safety Issues are There?
Dawn AC is a computer software package that
provides a complete system for managing anticoagulants.
This software package is designed
for healthcare professionals only.
The software calculates the next dose and next test
date. The software can also record and output manually set doses and
next test dates.
WARNINGS
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Inadequate checking of the Dose and Next Test
Date can cause severe injury or death |
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Check that each dose and next test date
instruction are correct. |
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Appoint a competent person to carry out the
checks. |
Dawn AC provides a number of checks and warnings to
try and prevent errors. These are:
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alerts and warning reports after each dosage
calculation
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a dosage check report
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having limits outside which dosing cannot occur
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listing non-attendees
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listing of problem patients
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database maintenance programs e.g. check database
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warnings on amending user letters
WARNINGS
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Train staff in the use of a computer system.
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Develop written procedures to use with this
system to meet your local needs. |
These procedures should incorporate not only
necessary operational steps but safety steps. The computer system
along with these written procedures should form part of a quality
management system. Subject this system to external auditing by a
suitable quality standards authority.
What Key Safety Areas Have Been Identified?
The following key safety areas have been identified
Correct Patient Identification
It is critical that the users ensure that they have
identified the correct patient before taking action such as editing
information, dosing, or reports.
Avoiding Transcription or Transposition Errors
Careful procedures should be derived and instituted
to check that any transcription or transposition of data cannot occur.
The aim should be to eliminate completely any such potential for this
type of error.
Losing Track of a Patient
It is vital that a patient does not get ‘lost’
within the system, e.g. treatment plan wrongly closed, no next test
appointment made, no follow up on non-attendances.
Ensuring Operational, Data and System Set-up
Integrity
It is critical that the system and procedures are
critically examined initially and routinely to ensure that the whole
system integrity is maintained at all times.
Safety Check Lists
Derived from identified safety considerations ,
your procedures should incorporate and address the following safety
points presented in the form of a check list by functional area. This
list is not intended as a complete and exhaustive list. Each
user must determine their own safety procedures and ensure that they
are operated correctly and consistently.
The checklists are in two sections as follows, one
for the routine users of the system:
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Adding/editing patient’s details
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Adding/editing patient treatment plan
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Adding previous treatment history
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Adding the next test date/time
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Dosing patients
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Adding/editing/deleting user letters |
And secondly, there are separate check lists for
system managers to consider.
Your Safety Check List for Adding/Editing Patient's
Details.
A user check list
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The patient’s details have not been previously
entered. |
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Correct Surname, forename, hospital number, date
of birth so that the patient can be uniquely identified every time. |
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Patient is stable and has reached the maintenance
dose. |
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Patient not wrongly marked as deceased. |
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Treatment plan is not suspended or terminated in
error. |
Your Safety Check List for Adding/Editing Patient
Treatment Plan Details
A user check list
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This data must be entered and be correct.
Prime Anticoagulation Reason (mandatory).
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Is the patient a “problem”, i.e. on concurrent
drugs, elderly (optional).
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Correct Dosing Regime i.e. the instruction of the
tablets or pills to be taken by the patient (mandatory).
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Start date (mandatory).
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If short term, treatment duration in weeks
(mandatory for short term patients).
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Target INR Range (mandatory).
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Dosage Safety Range (optional).
Your Safety Check List for Adding Previous
Treatment History
A user check list You MUST check that the
previous treatment history has been entered correctly.
Your Safety Check List for Adding the Next Test
Date/Time
A user check list
Your Safety Check List for Running Clinics
A user check list
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Correct INR entered.
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Check manual override of dose and next visit
date, always add a comment to say why the change was made.
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Check manual override of missing days, always add
a comment.
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Patient MUST be stable and reached a maintenance
dose before using automatic dosing in the Maintenance Module.
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Check that all patients (including non attendees)
due on a particular day have been dosed or dealt with completely.
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Validate each dose and next date BEFORE
“informing the patient”.
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The
wrong sample number is not entered.
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The wrong dosage instruction report is not stuck
in the wrong patient’s record book.
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The wrong information is not copied by hand to
the wrong book or patient report.
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The wrong information is not communicated to a
patient by telephone.
Your Safety Check List for Adding/Editing/Deleting
User Letters
A user check list
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Test all new or altered user letters before using
them in a live situation.
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Check correctness of all user letters printed out
from the system.
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To avoid the wrong information being communicated
in writing to a patient, include a patient identifier in any printed
dose instruction.
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To prevent the wrong dose instruction being
communicated to a patient, include the current test date alongside
the dose instruction.
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To prevent untested user letters being sent out
to patients by mistake, use the approved flag, marking only fully
tested and authorised letters as such
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Where printing user letters for a group of
patients, have a tally of the number of user letters you expect to
produce and match that to the number of user letters actually
produced, to avoid missing anyone out.
Your Safety Check List for Dose/Interval settings
A system manager’s check list
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Are the INR limits correct.
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Are all the trends and triggers identified.
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Are the interval settings valid.
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Are all the alarms present. Limits should not
be set to zero or checks will not be performed
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Are the missing days correct.
Your Safety Check List for Data and Operational
Integrity
A system manager’s check list.
Do you have written procedures and physical
arrangements for:
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Checking routinely the database for possible
errors.
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Setting up the maintenance scheduler to automate
database maintenance
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Checking routinely the system keys to optimise
system performance within your organisation
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Checking the hardware for possible errors
especially the data disk storage.
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Replacing backup media regularly - media only has
a set storage life.
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Backing up routinely at appropriate intervals and
being able to restore the data and programs if required.
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Ensuring backup media is stored safely in a
separate place from the computer system and is readily referenced.
Providing adequate protection from:
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power failures, notebook/laptop battery discharge
and interruptions.
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staff inadvertently switching power off at the
mains.
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staff switching off the system if they have
difficulty using the program.
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Checking for computer virus violation.
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Documenting and reporting software and
operational problems or ‘near misses’ to Dawn Clinical Software and
their own management.
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Documenting all changes to system set-up to show
they are properly controlled and validated.
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Ensuring the manual and your procedures are
complete i.e. no sections have been removed, and are kept in a safe
and accessible place for ready reference by your users. Make
frequent checks that this is the case.
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Preventing and not allowing adding or editing of
data in the underlying database by using a third party program or
tool. All data access must be done through Dawn AC.
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Keeping all the system files complete and
together. Do not copy files from previous copies of the system into
the current set of files. The system files have a high
inter-dependency and require absolute referential integrity.
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Ensuring that if a practice system is created
that users do not enter ‘real or live’ data into it and use it
operationally.
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Encouraging use of the practice system to
rehearse any infrequently used procedures before live execution.
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Ensuring any old, out of date manual versions, or
sections of manuals are destroyed.
Your Safety Check List for Diary Settings
A system manager’s check list.
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Where you use timed appointments, consider the
number of clinics you need.
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Are there adequate time slots for a typical day’s
patients
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Have you entered your excluded days to cover the
next planned extension of the diary
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Do your excluded days include known staff
absences etc.
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Ensure the above points are considered before
extending the diary – extend only to just beyond the latest possible
appointment that will be given this month or however frequently you
extend the diary.
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Only you should delete a diary under strictly
controlled conditions
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Don’t forget to back up the system before
deleting a diary
© 2001 4S Information
Systems Ltd

“We Really Care"
“Dawn AC is an easy to use, adaptable, powerful, and
comprehensive PC based Anticoagulation Software System. It covers the
complete oral anticoagulation life cycle with Induction and
Maintenance Modules “
“Lancet Nov 7th 1998, Multi-centred Randomised Trial
using Dawn AC shows computer aided dosage leads to INR control 20 to
30% better than medical experts”
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