Correlation between Home INR and Core Laboratory INR in Patients Supported with Continuous-Flow Left Ventricular Assist Devices

Marija Dionizovik-Dimanovski, Allison P. Levin, Justin Fried, Kanika P. Mody, Erica Simonich, Arthur Reshad Garan, Melana Yuzefpolskaya, Hiroo Takayama, Yoshifumi Naka, Paolo C. Colombo, Bindu Kalesan, Nir Uriel, Ulrich P. Jorde

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It has been well established that patient self-testing (PST) of international normalized ratio (INR) using home monitoring devices increases the average therapeutic time and patient satisfaction. Long-term anticoagulation therapy with warfarin is used in patients with continuous-flow left ventricular assist device (CF-LVAD) to minimize the occurrence of thromboembolic events; however, PST devices have never been tested in patients with CF-LVADs. The purpose of this study was to determine the reliability of the PST device Alere INRatio 2 in patients supported with CF-LVADs. A correlation study was performed in 50 patients with CF-LVAD who were on stable warfarin therapy for a minimum of 3 weeks. Simultaneous INR values were determined from capillary whole blood samples using the Alere PST device and venous blood samples processed in the core laboratory at Columbia University Medical Center. There was a moderate correlation between the venous and the capillary INR values with a correlation coefficient of 0.83. The median difference between the methods was 0.39, with 44 of 50 patients recording higher INRs with Alere. Results remained unchanged after adjusting for use of amiodarone, abnormal hematocrit and liver enzymes, creatinine, and thyroid-stimulating hormone. Point of care testing with Alere correlates moderately well but consistently overestimates INR when compared with conventional laboratory testing in patients with CF-LVAD.

Original languageEnglish (US)
Pages (from-to)386-390
Number of pages5
JournalASAIO Journal
Volume61
Issue number4
DOIs
StatePublished - Jul 21 2015
Externally publishedYes

Fingerprint

Left ventricular assist devices
Heart-Assist Devices
International Normalized Ratio
Testing
Warfarin
Blood
Equipment and Supplies
Amiodarone
Thyrotropin
Liver
Creatinine
Enzymes
Patient Satisfaction
Hematocrit
Monitoring
Therapeutics

Keywords

  • home INR
  • LVAD anticoagulation
  • LVAD home INR
  • LVAD INR
  • LVAD warfarin

ASJC Scopus subject areas

  • Biophysics
  • Biomaterials
  • Bioengineering
  • Biomedical Engineering
  • Medicine(all)

Cite this

Correlation between Home INR and Core Laboratory INR in Patients Supported with Continuous-Flow Left Ventricular Assist Devices. / Dionizovik-Dimanovski, Marija; Levin, Allison P.; Fried, Justin; Mody, Kanika P.; Simonich, Erica; Garan, Arthur Reshad; Yuzefpolskaya, Melana; Takayama, Hiroo; Naka, Yoshifumi; Colombo, Paolo C.; Kalesan, Bindu; Uriel, Nir; Jorde, Ulrich P.

In: ASAIO Journal, Vol. 61, No. 4, 21.07.2015, p. 386-390.

Research output: Contribution to journalArticle

Dionizovik-Dimanovski, M, Levin, AP, Fried, J, Mody, KP, Simonich, E, Garan, AR, Yuzefpolskaya, M, Takayama, H, Naka, Y, Colombo, PC, Kalesan, B, Uriel, N & Jorde, UP 2015, 'Correlation between Home INR and Core Laboratory INR in Patients Supported with Continuous-Flow Left Ventricular Assist Devices', ASAIO Journal, vol. 61, no. 4, pp. 386-390. https://doi.org/10.1097/MAT.0000000000000229
Dionizovik-Dimanovski, Marija ; Levin, Allison P. ; Fried, Justin ; Mody, Kanika P. ; Simonich, Erica ; Garan, Arthur Reshad ; Yuzefpolskaya, Melana ; Takayama, Hiroo ; Naka, Yoshifumi ; Colombo, Paolo C. ; Kalesan, Bindu ; Uriel, Nir ; Jorde, Ulrich P. / Correlation between Home INR and Core Laboratory INR in Patients Supported with Continuous-Flow Left Ventricular Assist Devices. In: ASAIO Journal. 2015 ; Vol. 61, No. 4. pp. 386-390.
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