Download e-book for iPad: Coagulation Disorders: Quality in Laboratory Diagnosis by Michael Laposata

By Michael Laposata

Coagulation issues every day pathologists are confronted with ordering laboratory assessments with which they're unusual. An incorrectly ordered attempt or mistakes in studying attempt effects may end up in errors that compromise sufferer protection. Coagulation problems is designed to teach scientific pathologists, lab managers, scientific technologists, and citizens how you can steer clear of universal error in attempt choice and outcome interpretation in diagnostic coagulation. using a case-based procedure, every one bankruptcy contains a concise evaluation of a tremendous prognosis, with a number of illustrative instances, after which an inventory of urged criteria of care pertinent to the matter. simply because it is key for the practitioner within the prognosis of bleeding and thrombotic issues to understand the perfect plan of action to set up a prognosis or to safely deal with a sufferer, it really is both necessary to additionally be aware of what to not do. warding off the errors is a serious first step to optimizing sufferer end result and maximizing sufferer security. gains of Coagulation problems contain: An emphasis on picking verified, evidence-based criteria in coagulation checking out genuine case illustrations of in general obvious mistakes in addition to the results of these error on sufferer consequence and laboratory administration Examples of mistakes which compromise sufferer protection throughout all significant parts of laboratory drugs Pocket-sized for portability in regards to the sequence A key factor for each laboratory and person laboratory practitioner is the evaluation of probability and a present operating wisdom of the criteria of care confirmed for diagnostic trying out through instructions, significant experiences and trials. The Diagnostic criteria of Care sequence provides universal blunders linked to diagnoses in medical pathology, utilizing case examples to demonstrate potent research in response to present facts and criteria. as well as being functional diagnostic courses, each one quantity demonstrates using caliber coverage and the position of the pathologist in making sure caliber and sufferer defense.

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Extra resources for Coagulation Disorders: Quality in Laboratory Diagnosis

Sample text

The doctor orders a PTT to monitor the anticoagulant effect of low molecular weight heparin. The PTT is normal. 5 mg/kg 2 times per day. When the hematocrit is found to be decreasing in the presence of this higher dose of low molecular weight heparin, an investigation is performed, and the doctor is informed that the PTT is not elevated to any appreciable extent even with therapeutic doses of low molecular weight heparin in most patients. Explanation and Consequences When low molecular weight heparin was first introduced, many doctors presumed that the PTT would be used to monitor this drug because the PTT is used to monitor unfractionated heparin.

However, it should be noted that monitoring argatroban with the PT is rarely performed, and for this reason, the therapeutic PT range that is chosen is arbitrary. STANDARDS OF CARE Patients receiving lepirudin should be monitored frequently, typically more than once per day, especially during dose adjustment and if there is any indication of renal impairment. Patients receiving argatroban should also be monitored more than once per day, especially as the anticoagulant dose is adjusted and when argatroban is used in patients with liver disease.

Failing to pursue a diagnosis of heparin-induced thrombocytopenia upon a decline in the platelet count to 50% or less of the baseline platelet count in a patient exposed to low molecular weight heparin by any route at any dose, in the absence of an alternative explanation for the decrease in platelets. Although unfractionated heparin is more frequently associated with heparin-induced thrombocytopenia, exposure to low molecular weight heparin alone can produce heparininduced thrombocytopenia. Case with Error Averted A patient in a rehabilitation hospital being treated with low molecular weight heparin as prophylaxis against thrombosis after knee replacement surgery develops a platelet count that declines to an extent and at a rate consistent with heparin-induced thrombocytopenia.

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