title: An error in the CoaguChek S device results in prosthetic heart valve thrombosis.
abstract: The CoaguChek S device offers patients on oral anticoagulant treatment, a simple and fast method of direct monitoring of their international normalized ratio (INR). It is comparable with the glucose monitoring system, a fingerprick for a drop of capillary blood and some minutes to get the INR result for further anticoagulation monitoring. We present a case of tricuspid prosthetic valve thrombosis due to inadequate anticoagulation because of an error in the point-of-care device.
authors.affiliation: Department of Cardiology, Heart Center, Radboud University Nijmegen Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands.
authors.forename: Judith M D
authors.initials: JM
authors.lastname: van den Brule
authors.forename: Johannes H
authors.initials: JH
authors.lastname: Romkes
authors.forename: Marc A
authors.initials: MA
authors.lastname: Brouwer
authors.forename: Luc
authors.initials: L
authors.lastname: Noyez
mesh_terms: D000284:Administration, Oral; D000925:Anticoagulants / Q000008:administration & dosage*; D016903:Drug Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D004868:Equipment Failure; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation*; D006801:Humans; D019934:International Normalized Ratio / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D019095:Point-of-Care Systems; D011474:Prosthesis Design; D013927:Thrombosis / Q000097:blood / Q000209:etiology* / Q000517:prevention & control; D016896:Treatment Outcome; D014262:Tricuspid Valve Insufficiency / Q000601:surgery*
chemical_list: D000925:Anticoagulants