کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3027418 1182970 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The international normalized ratio according to Owren in liver disease: Interlaboratory assessment and determination of international sensitivity index
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی کاردیولوژی و پزشکی قلب و عروق
پیش نمایش صفحه اول مقاله
The international normalized ratio according to Owren in liver disease: Interlaboratory assessment and determination of international sensitivity index
چکیده انگلیسی

IntroductionThe international normalized ratio (INR) is used to prioritize liver disease patients for transplantation. Previous studies have shown high interlaboratory variability in Quick-based INR determinations in samples of patients with liver disease. We assessed Owren-based INR reagents for analyzing INR in patients with liver disease. Further, we determined the difference between international sensitivity index (ISI) for patients on vitamin K antagonists (ISIVKA) and ISI for patients with liver disease (ISIliver).Patients and MethodsTwenty patients with liver disease were included, 10 with INR 1.8-3.6 (group A1) and 10 with INR 1.2-1.5 (group C1). Plasma from these patients was analyzed for Owren-based INR in eight Swedish laboratories using either of following reagents: SPA +, Owrens PT or Nycotest PT. To determine ISI liver, the reference thromboplastin RBT/05 and additional 41 patients with liver disease and 20 normal controls were included. ISIVKA was determined according to the WHO procedure. The difference between the ISIVKA and ISIliver was calculated.ResultsThe coefficients of variance for the Owren based INR methods were 6.2% in group A1, 3.9 % in group C1 and 5.3% for all patients. The difference between ISIVKA and ISIliver were -0.4%, -0.7% and -0.2% for SPA +, Owrens PT and Nycotest PT respectively.ConclusionsInterlaboratory variation in INR analyses according to Owren in patients with liver disease is low and the difference between ISIVKA and ISIliver is below 10% with this method. ISIVKA can therefore be used in the INR calibration, for the Owren reagents studied, when analyzing plasma from patients with liver disease.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thrombosis Research - Volume 132, Issue 3, September 2013, Pages 346–351
نویسندگان
, , , , , , , ,