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Michelle Keown

Research Profile

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Prothrombin Time

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Publications

TOP 3
Leon Poller; S Ibrahim; Michelle Keown; A Pattison; Jørgen Jespersen
The prothrombin time/international normalized ratio (PT/INR) Line: derivation of local INR with commercial thromboplastins and coagulometers--two independent studies.
Leon Poller; Saied Ibrahim; Michelle Keown; Albert Pattison; Jørgen Jespersen
Simplified method for international normalized ratio (INR) derivation based on the prothrombin time/INR line: an international study.
Leon Poller; Michelle Keown; Saied Ibrahim; Gordon Lowe; Marco Moia; Alexander G Turpie; Christopher Roberts; A M H P van den Besselaar; Felix J M van der Meer; Armando Tripodi; Gualtiero Palareti; Caroline Shiach; Stirling Bryan; Meyer Samama; Michael Burgess-Wilson; Anthony Heagerty; Peter Maccallum; David Wright; Jørgen Jespersen
A multicentre randomised assessment of the DAWN AC computer-assisted oral anticoagulant dosage program.

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All Publications

2011: Leon Poller; S Ibrahim; Michelle Keown; A Pattison; Jørgen Jespersen
The prothrombin time/international normalized ratio (PT/INR) Line: derivation of local INR with commercial thromboplastins and coagulometers--two independent studies.
Journal of thrombosis and haemostasis : JTH 2011;9(1):140-8.
2010: Leon Poller; Saied Ibrahim; Michelle Keown; Albert Pattison; Jørgen Jespersen
Simplified method for international normalized ratio (INR) derivation based on the prothrombin time/INR line: an international study.
Clinical chemistry 2010;56(10):1608-17.
2009: Leon Poller; Michelle Keown; Saied Ibrahim; Gordon Lowe; Marco Moia; Alexander G Turpie; Christopher Roberts; A M H P van den Besselaar; Felix J M van der Meer; Armando Tripodi; Gualtiero Palareti; Caroline Shiach; Stirling Bryan; Meyer Samama; Michael Burgess-Wilson; Anthony Heagerty; Peter Maccallum; David Wright; Jørgen Jespersen
A multicentre randomised assessment of the DAWN AC computer-assisted oral anticoagulant dosage program.
Thrombosis and haemostasis 2009;101(3):487-94.
2008: Leon Poller; Michelle Keown; Saied Ibrahim; Gordon Lowe; Marco Moia; Alexander G Turpie; Christopher Roberts; A M H P van den Besselaar; Felix J M van der Meer; Armando Tripodi; Gualtiero Palareti; Jørgen Jespersen
A multicentre randomised clinical endpoint study of PARMA 5 computer-assisted oral anticoagulant dosage.
British journal of haematology 2008;143(2):274-83.
2008: Leon Poller; Michelle Keown; S Ibrahim; G Lowe; M Moia; A G Turpie; C Roberts; A M H P van den Besselaar; Felix J M van der Meer; Armando Tripodi; G Palareti; Caroline Shiach; Stirling Bryan; M Samama; M Burgess-Wilson; A Heagerty; P Maccallum; D Wright; Jørgen Jespersen
An international multicenter randomized study of computer-assisted oral anticoagulant dosage vs. medical staff dosage.
Journal of thrombosis and haemostasis : JTH 2008;6(6):935-43.
2007: Leon Poller; Michelle Keown; S Ibrahim; A M H P van den Besselaar; C Roberts; K Stevenson; Armando Tripodi; A Pattison; Jørgen Jespersen
Comparison of local International Sensitivity Index calibration and 'Direct INR' methods in correction of locally reported International Normalized Ratios: an international study.
Journal of thrombosis and haemostasis : JTH 2007;5(5):1002-9.
2006: Piet Meijer; Cornelis Kluft; Leon Poller; Felix J M van der Meer; Michelle Keown; Saied Ibrahim; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen
A national field study of quality assessment of CoaguChek point-of-care testing prothrombin time monitors.
American journal of clinical pathology 2006;126(5):756-61.
2006: Leon Poller; Michelle Keown; Saied A Ibrahim; Felix J M van der Meer; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen; Pieter Meijer; Cornelis Kluft
Quality assessment of CoaguChek point-of-care prothrombin time monitors: comparison of the European community-approved procedure and conventional external quality assessment.
Clinical chemistry 2006;52(10):1843-7.
2005: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation. A multicentre calibration study of WHO international reference preparations for thromboplastin, rabbit (RBT/90) and human (rTF/95).
Journal of clinical pathology 2005;58(6):667-9.
2004: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European concerted action on anticoagulation. Quality assessment of the CoaguChek Mini and TAS PT-NC point-of-care whole-blood prothrombin time monitors.
Clinical chemistry 2004;50(3):537-44.
2003: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation. Correction of displayed international normalized ratio on two point-of-care test whole-blood prothrombin time monitors (CoaguChek Mini and TAS PT-NC) by independent international sensitivity index calibration.
British journal of haematology 2003;122(6):944-9.
2003: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
Reliability of international normalised ratios from two point of care test systems: comparison with conventional methods.
BMJ (Clinical research ed.) 2003;327(7405):30.
2003: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation (ECAA): an assessment of a method for ISI calibration of two whole blood point-of-care PT monitor systems based on lyophilized plasmas using whole blood equivalent PT.
Journal of thrombosis and haemostasis : JTH 2003;1(4):766-72.
2003: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen; Caroline Shiach
European concerted action on anticoagulation. Minimum numbers of lyophilized plasma samples for ISI calibration of CoaguChek and TAS point-of-care whole blood prothrombin time monitors.
American journal of clinical pathology 2003;119(2):232-40.
2003: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation (ECAA). An assessment of lyophilised plasmas for ISI calibration of CoaguChek and TAS whole blood prothrombin time monitors.
Journal of clinical pathology 2003;56(2):114-9.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; Caroline Shiach; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen
European Concerted Action on Anticoagulation (ECAA): International Normalized Ratio variability of CoaguChek and TAS point-of-care testing whole blood prothrombin time monitors.
Thrombosis and haemostasis 2002;88(6):992-5.
2002: Caroline Shiach; Bonnie Campbell; Leon Poller; Michelle Keown; Nikhil Chauhan
Reliability of point-of-care prothrombin time testing in a community clinic: a randomized crossover comparison with hospital laboratory testing.
British journal of haematology 2002;119(2):370-5.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation. Evaluation of a method for International Sensitivity Index calibration of two point-of-care prothrombin time (PT) monitoring systems (CoaguChek Mini and TAS PT-NC) with fresh plasmas based on whole-blood equivalent PT.
Clinical chemistry 2002;48(10):1672-80.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation (ECAA). Minimum number of centres for reliable International Sensitivity Index calibration of CoaguChek and TAS point-of-care whole blood monitors.
Thrombosis research 2002;107(1-2):61-6.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen; Caroline Shiach
Minimum numbers of fresh whole blood and plasma samples from patients and healthy subjects for ISI calibration of CoaguChek and RapidPointCoag monitors.
American journal of clinical pathology 2002;117(6):892-9.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Caroline Shiach; Jørgen Jespersen
European Concerted Action on Anticoagulation--comparison of fresh plasma and whole blood multicentre ISI calibrations of CoaguChek Mini and TAS PT-NC whole blood prothrombin time point-of-care monitors.
Thrombosis and haemostasis 2002;87(5):859-66.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Armando Tripodi; Jørgen Jespersen; Caroline Shiach; M H Horellou; D Dias; N Egberg; J A Iriarte; I Kontopoulou-Griva; B Otridge
European Concerted Action on Anticoagulation (ECAA): multicentre international sensitivity index calibration of two types of point-of-care prothrombin time monitor systems.
British journal of haematology 2002;116(4):844-50.
2002: Leon Poller; Michelle Keown; Nikhil Chauhan; A M H P van den Besselaar; Joyce Meeuwisse-Braun; Armando Tripodi; Mariagrazia Clerici; Jørgen Jespersen
European concerted action on anticoagulation. Use of plasma samples to derive international sensitivity index for whole-blood prothrombin time monitors.
Clinical chemistry 2002;48(2):255-60.
1999: Leon Poller; Michelle Keown; S A Shepherd; Caroline Shiach; S Tabeart
The effects of freeze drying and freeze drying additives on the prothrombin time and the international sensitivity index.
Journal of clinical pathology 1999;52(10):744-8.