Results 231 to 240 of about 40,111 (286)

Activated Partial Thromboplastin Time and Minor Coagulopathies

American Journal of Clinical Pathology, 1979
Five commercially available activated partial thromboplastin time (APTT) test systems were compared with the kaolin partial thromboplastin time (KPTT) method to determine sensitivity in detecting minor coagulation defects. All reagent systems detected severe factor VIII-, IX-, and XI-deficient hemophilia.
William E. Hathaway, Sherry L. Assmus, Robert R. Montgomery, A. Stephen Dubansky   +3 more
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Abnormal activated partial thromboplastin time and malignancy

Scottish Medical Journal, 2011
Malignancy often results in clotting abnormalities. The aetiology of haemostasis problems in cancer is complex, and is still not completely understood. We describe a case of a patient with malignant mesothelioma, who was found to have elevated activated partial thromboplastin time, due to lupus anticoagulant.
M Delicata, H Hambley
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Activated Partial Thromboplastin Time

2013
Activated partial thromboplastin time (APTT) is a commonly used coagulation assay that is easy to perform, is affordable, and is therefore performed in most coagulation laboratories, both clinical and research, worldwide. The APTT is based on the principle that in citrated plasma, the addition of a platelet substitute, factor XII activator, and CaCl2 ...
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Correlation Between Activated Clotting Time and Activated Partial Thromboplastin Times

The Annals of Pharmacotherapy, 2002
OBJECTIVE: To evaluate the correlation between clotting time tests and heparin concentration, the correlation between activated clotting time (ACT) and activated partial thromboplastin time (aPTT) results, and to compare the clinical decisions based on ACT results with those based on aPTT results.
Susan J. Westley, John M. Koerber, Sandra N. Nowak, Maureen A. Smythe, Mamtha Balasubramaniam, Robert L Begle, Joan C. Mattson   +6 more
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Use of the Activated Partial Thromboplastin Time

Annals of Internal Medicine, 1988
Excerpt To the Editor:In connection with a recent article (1), I pose a question. Should peridural anesthesia in women with otherwise normal bleeding history be preceded by coagulation tests to pre...
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Shortened activated partial thromboplastin time: causes and management

Blood Coagulation & Fibrinolysis, 2010
Throughout the long history of the hemostasis laboratory, and as an evaluation of the coagulation cascade, the results of the activated partial thromboplastin time (APTT) have primarily been considered as an index of loss-of-function and rarely as an index of gain-of-function.
LIPPI, Giuseppe, SALVAGNO, GIAN LUCA, Ippolito L, Franchini M, Favaloro E.J.   +4 more
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A laboratory evaluation into the short activated partial thromboplastin time

Blood Coagulation & Fibrinolysis, 2010
Although short activated partial thromboplastin times (APTTs) are generally considered to be laboratory artefacts of problematic blood collections, there is mounting evidence that in some cases a short APTT may reflect a hypercoagulable state, potentially associated with increased thrombotic risk and adverse cardiovascular events.
Jerry Koutts, Soma Mohammed, Ashraf Mina, Emmanuel J. Favaloro   +3 more
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Bleeding in Patients With Activated Partial Thromboplastin Time Inhibitors

Southern Medical Journal, 1982
We present a case in which an activated partial thromboplastin time (aPTT) inhibitor may have significantly contributed to prolonged bleeding in a patient and review five similar cases. The possibility of an aPTT inhibitor should be considered in the evaluation of patients with unexplained prolongation of PTT and PT.
Kurtides Es, Vagher P, Semerdjian Ra, Kalish Sb   +3 more
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Prolonged activated partial thromboplastin time with no clear explanation

Blood Coagulation & Fibrinolysis, 2020
Evaluation of bleeding risk before operation includes history of bleeding, complete blood count and basic coagulation tests, prothrombin time and activated partial thromboplatin time (aPTT). In this article, we present a patient with colon cancer who presented with asymptomatic prolonged aPTT of 72–100 s, while past a PTT ...
Pia Raanani, Pia Raanani, Dorit Blickstein, Dorit Blickstein, Esther Rabizadeh, Sigal Nakav, Galia Spectre, Galia Spectre   +7 more
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Comparison of Activated Partial Thromboplastin Time Reagents

Laboratory Medicine, 1988
This study compared two activated partial thromboplastin time (aPTT) reagents with respect to their sensitivity for detection of factor deficiencies in the intrinsic pathway of coagulation and to heparin concentration. Significant differences were found with respect to the ability of the reagents to detect intrinsic factor deficiencies.
Judith A. Rapiejko, Joseph T. Pedersen, Matthew R. Pincus   +2 more
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