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Management of A.F. patients with the DawnAC induction module

Management of A.F. patients with the DawnAC induction module. David Hirst MidYorkshire Hospitals NHS Trust. Fennerty v5 software. Glasgow from table. Integrated Glasgow v6 software. Referrals to clinic. Out patient referrals In patients referred direct from wards. Out-patient referrals.

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Management of A.F. patients with the DawnAC induction module

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  1. Management of A.F. patients with the DawnAC induction module David Hirst MidYorkshire Hospitals NHS Trust

  2. Fennerty v5 software Glasgow from table Integrated Glasgow v6 software

  3. Referrals to clinic • Out patient referrals • In patients referred direct from wards

  4. Out-patient referrals • Up to 4 a week • Written referral request mandatory • Details transferred onto warfarin dosing chart and new patient manager etc. completed • Warfarin prescription done by consultant haematologist

  5. Out-patient referrals • Wed am…details confirmed/updated, counselled • Start warfarin (5mg) on Friday and attend for INR on days 5 and 8 (following Tuesday and Friday) • Dosed by induction algorithm, results telephoned, yellow book returned • Aspirin stops when INR therapeutic (if have written confirmation) • Day8, transferred to maintenance

  6. Ward referrals • Dosing chart acts as referral request • New patient manager, treatment plan completed • INR, warfarin dose and date of next INR written on dosing chart and sent back to ward • Patient counselled before discharge • Patient may be discharged during induction

  7. Ward referrals • Day8, transferred to maintenance • In-patient, continue with dosing chart with INR checks on a regular basis • If discharged, further INRs at hospital or in community by dose/post using yellow book

  8. Only 32/175 UK sites (18%) have integrated induction module…why? • Expensive luxury…£1838 special offer • Read algorithm from a table and enter results as treatment history • Induction not done…work volume, staffing levels

  9. Why use integrated induction package ? • User friendly • Seamless transition to maintenance • Safety features (best practice) • Government guidelines • Litigation • I’m on 10% commission…I wish

  10. Safety features • Human error…misread table • Import results…reduce transcription error • Calculation prevention • Warnings

  11. Calculation prevention • No matching rule for day • INR greater than cut-off (5.0) • No matching rule for previous dose • Dialogue box to enter dose, any miss days and interval…algorithm shown to aid decision • No matching rule for INR • No dialogue box…problem with algorithm

  12. Warnings generated on calculation • Large INR change (>=INR entered in setup) • INR less than previous INR and low • Review for transfer

  13. Warnings with confirmation prompt • Given on accepting dose and next test date for both manual and computer calculated values • Dose increased for INR rising to within range or high • Dose decreased for INR falling to within range or low • Miss days greater than 2 • Next test interval greater than protocol maximum

  14. PRODIGY guidelines for warfarin therapy in AFwww.prodigy.nhs.uk • An INR of 2.0 can usually be reached by giving warfarin 5 mg for 4-5 days. • People on warfarin need regular monitoring of INR. Ideally this should take place in the setting of an organized anticoagulant clinic. • If no clinic is available, monitor INR daily until the result has stayed in the therapeutic range for at least 2 consecutive days. Then check INR 2-3 times a week for 1-2 weeks, and then less often, depending on the stability of the results.

  15. Analysis of induction algorithm • Foxfire…258 induction records dosed on days 1,5,8 • Time taken to 2 consecutive INRs 2.0-4.0 post induction • Was day8 dose accurate or did it overdose/underdose

  16. Analysis summary Acceptable, covered by Aspirin No problem No problem Unacceptable, Aspirin stopped. Most sensitive to warfarin taking longer to induct. ?increase by 1mg

  17. What can be done? • Tweak algorithm • Warning when day8 INR < day5 • Advise to restart aspirin • Have higher post induction target INR • Let INR fall to baseline and restart on a different algorithm • ‘Intelligent’ algorithm

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