A 67-year-old patient was admitted to the hospital to perform an esophagogastrectomy because a lesion at the lower esophagus was strongly suspicious for cancer. Her medical history and her family history were negative for bleeding tendency or thrombosis. Her activated partial thromboplastin time (aPTT) was prolonged (44 s) whereas her prothrombin time (PT) was normal (11 s) presurgery. Mixing o...

An 80-year-old man was admitted for acute subdural hematoma caused by a mild brain injury. His coagulation test showed an isolated prolongation of activated partial thromboplastin time (aPTT). Though the subdural hematoma did not progress, oozing bleed from the wound of tracheostomy continued. Failure of correction on aPTT mixing test supported the presence of an inhibitor to a coagulation fact...

Submit Manuscript | http://medcraveonline.com Abbreviations: DOACs: Direct Oral Anticoagulants; DVT: Deep Venous Thrombosis; PE: Pulmonary Embolus; PBS: Pharmaceutical Benefits Scheme; PD: Pharmacodynamic; PK: Pharmacokinetics; TGA: Therapeutic Good Administration; PCC: Prothrombin Complex Concentrate; PT: Prothrombin Time; aPTT: Activated Atrial Thromboplastin Time; FDA: Food and Drug Administ...

Submit Manuscript | http://medcraveonline.com Abbreviations: APDE: Acquired Platelet Dysfunction with Eosinophilia; AEC: Absolute Eosinophil Count; ADP: Adenosine Diphosphate; RiCof: Platelet Ristocetin Cofactor; APTT: Activated Partial Thromboplastin Time; PT: Prothrombin Time; SFLC: Serum Free Light Chains; IgA: Immunoglobulin A; aVWD: Acquired Von Willebrand Disease; FVIII: Factor VIII; FIX:...

CONTEXT Elevated free hemoglobin (Hb) and bilirubinemia complicate extracorporeal membrane oxygenation and could affect unfractionated heparin (UH) therapy monitoring by anti-Xa assay and activated partial thromboplastin time (aPTT). OBJECTIVES To compare in vitro response of anti-Xa and aPTT assays to UH in samples with artificial hyperbilirubinemia and hyperhemoglobinemia and to estimate if...

The activated partial thromboplastin time (aPTT) is widely used as a screening coagulation test and for monitoring unfractionated heparin therapy. Various commercial reagents are available, with different performance characteristics, particularly responsiveness to the lupus anticoagulant (LA). Because aPTT reagent selection significantly affects the interpretation of results, we reviewed Colleg...

AMI: Acute Myocardial Infarction; aPTT, Activated Partial Thromboplastin Time; CCSP: Clinical Coronary Stenosis Progression; CK: Creatine Kinase; CRP: C-reactive Protein; CVD: Cerebrovascular Disease; CVP: Cerebral Vasculopathies; HDL: High Density Lipoprotein; LDL: Low Density Lipoprotein; Lp(a): Lipoprotein (a); MACE: Major Adverse Cardiac Event; PAI-1: Plasminogen Activator Inhibitor-1; PT: ...

OBJECTIVE This study was designed to examine the relationship between shortened activated partial thromboplastin time (APTT) and increased fibrinogen values with diabetes mellitus. METHODS APTT, prothrombin time (PT), fibrinogen, fasting plasma glucose (FPG) and glycosylated hemoglobin A1c (HbA1c) levels were measured in 1,300 patients. Patients were divided into three groups according to the...

Background Antiphospholipid syndrome (APS) is an acquired thrombophilia that can be associated with decreased platelet counts. Case A 67-year-old woman presented with thrombocytopenia and a symptomatic right atrial mass suspicious of cardiac myxoma. Prolongation of the activated partial thromboplastin time (aPTT) was caused by a strong lupus anticoagulant, and bone marrow cytology was consisten...

BACKGROUND Circadian variations have been described for a number of haemostatic and physiological factors, all of which might predispose towards clotting in the late morning. The anticoagulation effect of heparin has been shown to respond in a circadian manner, resulting in minimal prolongation of the activated partial thromboplastin time (aPTT) in the morning. METHODS Recombinant hirudin (HB...