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Comparing Point of Care International Normalised Ratio testing with laboratory testing methods in a cardiac inpatient population

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  • Michelle T Giles
  • Vicki Parker
  • Heather Bevan
  • Ian MR Wright

Abstract

Aims and objective. To compare agreement between International Normalised Ratio results from Point of Care testing with laboratory testing for cardiac inpatients receiving warfarin sodium. Background. Availability of point of care technology for International Normalised Ratio testing offers considerable benefits to patients and health care staff across a range of context. Design. Prospective comparison study. Method. Setting – Four cardiac wards in a regional referral hospital in New South Wales, Australia. Participants – 50 cardiovascular inpatients receiving warfarin therapy, including those patients being converted from intravenous heparin sodium. Intervention‐Point of Care International Normalised Ratio testing via finger prick using the CoaguChek®XS attended within one hour of laboratory International Normalised Ratio testing. Paired International Normalised Ratio results were compared using spearman rank and Mann–Whitney rank sum. Bland–Altman plots were used to demonstrate agreement. Results. One hundred and seventeen blinded paired tests were carried out, 44 on patients receiving intravenous heparin. Laboratory and Point of Care International Normalised Ratio testing were highly significantly correlated (r = 0·953, p

Suggested Citation

  • Michelle T Giles & Vicki Parker & Heather Bevan & Ian MR Wright, 2010. "Comparing Point of Care International Normalised Ratio testing with laboratory testing methods in a cardiac inpatient population," Journal of Clinical Nursing, John Wiley & Sons, vol. 19(21‐22), pages 3085-3091, November.
    • Handle: RePEc:wly:jocnur:v:19:y:2010:i:21-22:p:3085-3091
    DOI: 10.1111/j.1365-2702.2010.03357.x
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    Cited by:

    1. Anne Grogan & Michael Coughlan & Geraldine Prizeman & Niamh O'Connell & Nora O'Mahony & Katherine Quinn & Gabrielle McKee, 2017. "The patients’ perspective of international normalized ratio self‐testing, remote communication of test results and confidence to move to self‐management," Journal of Clinical Nursing, John Wiley & Sons, vol. 26(23-24), pages 4379-4389, December.

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