OBJECTIVES The activated partial thromboplastin time (aPTT) test has been used for years to monitor parenteral direct thrombin inhibitors (DTIs) and unfractionated heparin. Because the aPTT correlates poorly with unfractionated heparin levels, we hypothesized that the aPTT may not be the best test for monitoring parenteral DTIs. METHODS Using 235 excess plasma specimens from 82 adult patients...

Enzymatic oxidation of pyrogallol was efficiently transformed to an oxidative product, purpurogallin (PPG). Here, the anticoagulant activities of PPG were examined by monitoring activated partial thromboplastin time (aPTT), prothrombin time (PT), and the activities of thrombin and activated factor X (FXa). And, the effects of PPG on expression of plasminogen activator inhibitor type 1 (PAI-1) a...

Purpose: Using adjusted body weight (AdjBW) for heparin dosing in obese patients is a common but not validated clinical practice. The purpose of this study was to evaluate whether using AdjBW in obese patients would lead to quick achievement of therapeutic activated partial thromboplastin time (aPTT) and low bleeding risk with heparin therapy. Methods: A retrospective cohort study was conducted...

BACKGROUND In patients receiving heparin infusions, variations in specimen collection technique may contribute to inaccurate measurements of activated partial thromboplastin time (aPTT). OBJECTIVES To determine if there is a difference in aPTT results between specimens collected from a central venous access device (CVAD) compared with venipuncture in patients receiving heparin infusions. ME...

Abstract Multiple myeloma (MM) is a clonal plasma cell disorder that commonly presents with anemia, renal failure, hypercalcemia, and lytic bone lesions. MM also frequently associated thrombotic complications; however, it may rarely present bleeding diathesis. We report case of 42-year-old gentleman relapsed immunoglobulin G lambda who presented epistaxis, gingival bleeding, oozing at the venep...

adverse outcome of pregnancy is a potentially dangerous complication of conception and affects 15-20% of pregnancies. according to recent studies increased level of blood antiphospholipids antibodies, if accompanied by predisposing factors, can be an adverse event in human pregnancy. the aim of the present study was to compare the maternal serum levels of anticardiolipin and antiphosphatidyl se...

Adverse outcome of pregnancy is a potentially dangerous complication of conception and affects 15-20% of pregnancies. According to recent studies increased level of blood antiphospholipids antibodies, if accompanied by predisposing factors, can be an adverse event in human pregnancy. The aim of the present study was to compare the maternal serum levels of anticardiolipin and antiphosphatidyl se...

A critical review is given of the tests available for the assessment of the action of anticoagulants, such as heparins, oral anticoagulants and direct thrombin inhibitors, in patients under antithrombotic therapy. The principle of action and the performance of the thromboplastin time (PT), the activated partial thromboplastin time (aPTT), the whole blood clotting time, the thrombin time, the ec...

clinicians should be aware of new developments to familiarize themselves with pharmacokinetic and pharmacodynamic characteristics of new anticoagulant agents to appropriately and safely use them. for the moment, cardiologists and other clinicians also require to master currently available drugs, realizing the mechanism of action, side effects, and laboratory monitoring to measure their anticoag...

The aim of this study was to examine the blood coagulation profiles of ferrets and compare them with those of rats. The ferret activated partial thromboplastin time (aPTT) was slightly longer than the rat aPTT. In contrast, the ferret prothrombin time and thrombin time were profoundly shorter than the corresponding rat values. The fibrinogen level in ferret plasma was 2 times higher than that i...