Comparison of a standard and a sensitive thromboplastin in monitoring low intensity oral anticoagulant therapy.

Abstract:

:The greater precision in prothrombin time monitoring obtained using thromboplastins with low international sensitivity index (ISI) values are believed to result in improved patient care. The authors conducted a blinded prospective study of 84 random patients on low-intensity warfarin therapy who were monitored with either a sensitive (ISI, 1.3) or standard (ISI, 1.9) thromboplastin. For the patients monitored with standard and sensitive thromboplastins, respectively, no difference was found in the degree of anticoagulation (standard thromboplastin mean INR, 2.4 vs. 2.5, P = .37; sensitive thromboplastin mean INR, 2.6 vs. 2.6, P = .74; mean daily warfarin dose, 5.1 vs. 4.7 mg, P = .28) or efficacy (warfarin dosage adjustments, 117 vs. 116; clinic visits, 362 vs. 378; percentage of therapeutic INR determinations, 47% vs. 48%). In addition, no difference was found in bleeding prevalence or severity (.22 vs. .27 events per person-year observation). The authors concluded that monitoring anticoagulant therapy in the INR range of 2-3 with a standard thromboplastin may be comparable to monitoring with a more sensitive thromboplastin with respect to efficacy, safety, and degree of anticoagulation achieved.

journal_name

Am J Clin Pathol

authors

Brophy MT,Fiore LD,Lau J,Goodwin R,Lopez A,Deykin D

doi

10.1093/ajcp/102.1.134

subject

Has Abstract

pub_date

1994-07-01 00:00:00

pages

134-7

issue

1

eissn

0002-9173

issn

1943-7722

journal_volume

102

pub_type

临床试验,杂志文章,随机对照试验
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