Results 171 to 180 of about 713,115 (228)
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The Activated Partial Thromboplastin Time
Annals of Internal Medicine, 1986Excerpt To the editor: The statement by Drs. Suchman and Griner (1) that "normal APTT [activated partial thromboplastin time] and PT [prothrombin time] results essentially rule out a significant co...
Michael L. Bashevkin, Ismat U. Nawabi
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Pseudo-prolongation of the Partial Thromboplastin Time [PDF]
American Journal of Clinical Pathology, 1983 A patient with a negative personal and family history for bleeding was being prepared for bronchoscopy when an extremely long activated partial thromboplastin time was detected. Analyses for the contact phase factors were normal. It was determined subsequently that the prolongation was artifactual.
Laura G. Smith, Craig S. Kitchens
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Partial Thromboplastin Time for Screening
Annals of Internal Medicine, 1979Excerpt To the editor: We read the report of Robbins and Rose in the May 1979 (1) with an interest heightened by our own experience.
Paul Weinstein, N.G. Baranetsky
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Partial Thromboplastin Time as a Screening Test
Annals of Internal Medicine, 1979Excerpt In recent years, the routine laboratory test has become an accepted part of medical practice.
John A Robbins, Steven D. Rose
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Erroneous Activated Partial Thromboplastin Time
Annals of Internal Medicine, 1978Excerpt To the editor: We wish to draw attention to the problem of erroneous results of activated partial thromboplastin times (aPTT) when plasma samples from patients on heparin are tested with th...
John Owen, Kelvin Carstairs, Eren Payne
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Spurious Prolongation of the Activated Partial Thromboplastin Time
Thrombosis and Haemostasis, 1977SummaryThe clinical and laboratory data of 8 patients (4 males and 4 females) with circulating anticoagulant were presented. Based on prolonged APTT, failure to correct the APTT with 50 % normal plasma and abnormal tissue thromboplastin inhibition test, the inhibitor was identified as “middle stage” – or the “lupus anticoagulant”.
Okpara Ra, Carabello Ja, Day Hj
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Activated Partial Thromboplastin Time
2013Activated 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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Prothrombin and Partial Thromboplastin Time
2016Basic plasma coagulation function is readily assessed with a few simple in vitro laboratory tests, prothrombin time (PT) and partial thromboplastin time (PTT), and they are useful as the current standard for establishing a diagnosis of coagulopathy.
Ruchika Goel, Ruchika Goel, Paul M. Ness
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Effect of Warfarin on the Activated Partial Thromboplastin Time
Drug Intelligence & Clinical Pharmacy, 1986Outpatients followed in an anticoagulation clinic were studied retrospectively to determine the effect of warfarin on the activated partial thromboplastin time (APTT). Twenty-nine patients were studied in part 1 of the trial to determine whether their APTT values were elevated when their prothrombin time (PT) was within 1.5 to 2.5 times the control PT.
Valerie M. Hauser, Susan L. Rozek
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False Elevation of Partial Thromboplastin Time and Prothrombin Time
JAMA: The Journal of the American Medical Association, 1970A partial thromboplastin time (PTT) and a prothrombin time (PT) performed as routine preoperative screening on a young woman hospitalized for preeclampsia were unexpectedly and markedly prolonged. Since there was no clinical suspicion of a bleeding disorder, and since results of numerous repeat tests were normal, an artifact was suspected.
Peter McPhedran, Robert E. Humphreys
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