scholarly journals Shortened Activated Partial Thromboplastin Time (APTT): A Simple but Important Marker of Hypercoagulable State During Acute Coronary Event

10.5772/27887 ◽  
2012 ◽  
Author(s):  
Wan Zaidah
Keyword(s):  
Partial Thromboplastin Time ◽  
Coronary Event ◽  
Activated Partial Thromboplastin Time ◽  
Hypercoagulable State ◽  
Acute Coronary Event ◽  
Important Marker

Shortened activated partial thromboplastin time, a hemostatic marker for hypercoagulable state during acute coronary event

2010 ◽  
Vol 155 (6) ◽  
pp. 315-319 ◽  
Author(s):  
Wan Zaidah Abdullah ◽  
Shaimaa K. Moufak ◽  
Zurkurnai Yusof ◽  
Mohd Sapawi Mohamad ◽  
I.M. Kamarul
Keyword(s):  
Partial Thromboplastin Time ◽  
Coronary Event ◽  
Activated Partial Thromboplastin Time ◽  
Hypercoagulable State ◽  
Acute Coronary Event

scholarly journals PENGARUH HIPERKOAGULASI TERHADAP MORTALITAS ASTROSITOMA PADA PEMANTAUAN 12 BULAN

2020 ◽  
Vol 37 (1) ◽  
Author(s):  
Among Wibowo ◽  
Tiara Aninditha ◽  
Henry Riyanto Sofyan ◽  
Rini Andriani
Keyword(s):  
Brain Tumor ◽  
Prothrombin Time ◽  
Partial Thromboplastin Time ◽  
High Grade Glioma ◽  
Activated Partial Thromboplastin Time ◽  
Hypercoagulable State ◽  
Cancer Center ◽  
High Grade ◽  
D Dimer

EFFECT OF HYPERCOAGULABILITY TO ASTROCYTOMA MORTALITY WITHIN 12-MONTHS OF FOLLOW UPABSTRACTIntroduction: Astrocytoma is the most common primary brain tumor. Hypercoagulable state is one of brain tumor complications which can cause vein thromboembolism (VTE). Vein thromboembolism incidence is increased in astrocytoma patients. Hypercoagulable state in astrocytoma could lower patient’s survival.Aim: To investigate the effect of hypercoagulable state on mortality within 12 months of follow up in astrocytoma patients.Methods: This study design was retrospective cohort. This research data was taken from medical records in Cipto Mangunkusumo General Hospital and Dharmais Cancer Center Hospital on December 2017-February 2018. The subjects were adult astrocytoma patients who had histopathology and hemostasis examination. The variables investigated in this study were gender, age, prothrombin time (PT), activated partial thromboplastin time (aPTT), and D-dimer. Data processed descriptively and analytically using SPSS ver. 20 for Windows.Results: There were 49 subjects in this research. Around 30 (61.2%) subjects were men and 20 (40.8%) subjects aged >50 years old. High grade glioma was found in 39 (79.6%) subjects and hypercoagulable state was found in 34 (69.4%) subjects. There were 20 subjects deceased in 12-month follow-up. Subjects with hypercoagulable state had relative risk (RR) of 3.97 more susceptible to die in 12-month follow-up compared to control (p=0.009).Discussion: Hypercoagulation was a mortality risk factor in 12-month follow-up in patients with astrocytoma.Keywords: Astrocytoma, hypercoagulation, mortality within 12-months of follow upABSTRAKPendahuluan: Astrositoma merupakan tumor otak primer yang paling sering ditemukan. Salah satu komplikasi dari tumor otak adalah keadaan hiperkoagulasi. Keadaan hiperkoagulasi dapat menyebabkan tromboemboli vena. Insiden tromboemboli vena meningkat pada astrositoma. Keadaan hiperkoagulasi pada astrositoma dapat menurunkan kesintasan atau meningkatkan mortalitas pada pasien astrositoma.Tujuan: Mengetahui pengaruh hiperkoagulasi pada mortalitas pasien astrositoma dalam 12 bulan pemantauan.Metode: Penelitian kohort retrospektif terhadap pasien tumor otak jenis astrositoma yang dirawat oleh Divisi Neuroonkologi di RSUPN Dr. Cipto Mangunkusumo (RSCM) dan RS Pusat Kanker Dharmais (RSKD) pada bulan Desember 2017 hingga Februari 2018. Sumber data adalah data sekunder berupa rekam medis pasien dewasa yang telah memiliki hasil pemeriksaan histopatologis dan hemostasis. Variabel yang diambil dalam penelitian ini adalah jenis kelamin, usia, prothrombin time (PT), activated partial thromboplastin time (aPTT), dan D-dimer. Data diolah secara deskriptif dan analitik bivariat menggunakan SPSS ver. 20 for Windows.Hasil: Terdapat 49 subjek dalam penelitian ini yang mayoritas (61,2%) laki-laki, berusia <50 tahun (59,2%), dan memiliki jenis high grade gliomas (75,8%). Sebagian besar subjek mengalami hiperkoagulasi (69,4%) dan dalam kondisi hidup (59,2%) pada 12 bulan pascaperawatan. Subjek dengan hiperkoagulasi memiliki risiko relatif (RR) 3,97 kali lebih rentan mengalami kematian setelah 12 bulan dibandingkan kontrol (p=0,009).Diskusi: Hiperkoagulasi merupakan salah satu faktor risiko kematian dalam 12 bulan pada pasien astrositoma.Kata kunci: Astrositoma, hiperkoagulasi, mortalitas 12 bulan

Monitoring Heparin Therapy: Relationships between the Activated Partial Thromboplastin Time and Heparin Assays Based on Ex-Vivo Heparin Samples

1990 ◽  
Vol 63 (01) ◽  
pp. 016-023 ◽  
Author(s):  
A M H P van den Bessekaar ◽  
J Meeuwisse-Braun ◽  
R M Bertina
Keyword(s):  
Partial Thromboplastin Time ◽  
Plasma Sample ◽  
Ex Vivo ◽  
Correlation Coefficients ◽  
Heparin Therapy ◽  
Thromboembolic Disease ◽  
Activated Partial Thromboplastin Time ◽  
Venous Thromboembolic Disease ◽  
Venous Thromboembolic

SummaryFive different APTT reagents, two amidolytic anti-ITa assays, one amidoiytic anti-Xa assay, and one coagulometric anti-Xa/ anti-IIa assay were used to assess the effect of heparin in patients treated for venous thromboembolic disease. Good correlations were observed between lug-transformed APYE> determined with the various reagents (correlation coefficients: 0.92-0.96).Nevertheless there were important differences in the slopes of the lines of relationship between the APTT reagents.Good correlations were observed between the anti-Xa and anti-IIa assay results (correlation coefficients: 0.92-0.97). However, the amidolytic anti-Xa activity was significantly higher (p <0.001) than the two amidolytic anti-IIa activities. Less good correlations were observed between the log-transformed APTTs and the anti-Xa or anti-IIa activities (correlation coefficients: 0.64-0.78). The correlations were improved by transforming the APTT into APTT-ratio, i.e. the ratio of the patient’s APTT to the same patient’s APTT after removal of heparin from the plasma sample by means of ECTEOLA-cellulose treatment. The correlation coefficients of log (AFTT-ratio) with anti-Xa or anti-IIa ranged from 0.76 to 0.87.For both APTT and amidolytic heparin assay, the response to in vitro heparin was different from the response to ex vivo heparin.Therefore, equivalent therapeutic ranges should be assessed by using ex vivo samples rather than in vitro heparin. Because of the response differences between the APTT reagents, it is not adequate to define a therapeutic range for heparin therapy without specification of the reagent.

Monitoring Anticoagulant Therapy by Activated Partial Thromboplastin Time: Hirudin Assessment

1994 ◽  
Vol 72 (05) ◽  
pp. 685-692 ◽  
Author(s):  
Michael T Nurmohamed ◽  
René J Berckmans ◽  
Willy M Morriën-Salomons ◽  
Fenny Berends ◽  
Daan W Hommes ◽  
...  
Keyword(s):  
Whole Blood ◽  
Partial Thromboplastin Time ◽  
Ex Vivo ◽  
Fold Increase ◽  
Heparin Therapy ◽  
Activated Partial Thromboplastin Time ◽  
Recombinant Hirudin ◽  
Interindividual Differences ◽  
The Relationship

SummaryBackground. Recombinant hirudin (RH) is a new anticoagulant for prophylaxis and treatment of venous and arterial thrombosis. To which extent the activated partial thromboplastin time (APTT) is suitable for monitoring of RH has not been properly evaluated. Recently, a capillary whole blood device was developed for bed-side monitoring of the APTT and it was demonstrated that this device was suitable to monitor heparin therapy. However, monitoring of RH was not evaluated.Study Objectives. To evaluate in vitro and ex vivo the responsiveness and reproducibility for hirudin monitoring of the whole blood monitor and of plasma APTT assays, which were performed with several reagents and two conventional coagulometers.Results. Large interindividual differences in hirudin responsiveness were noted in both the in vitro and the ex vivo experiments. The relationship between the APTT, expressed as clotting time or ratio of initial and prolonged APTT, and the hirudin concentration was nonlinear. A 1.5-fold increase of the clotting times was obtained at 150-200 ng/ml plasma. However, only a 2-fold increase was obtained at hirudin levels varying from 300 ng to more than 750 ng RH/ml plasma regardless of the assays. The relationship linearized upon logarithmic conversion of the ratio and the hirudin concentration. Disregarding the interindividual differences, and presuming full linearity of the relationship, all combinations were equally responsive to hirudin.Conclusions. All assays were equally responsive to hirudin. Levels up to 300 ng/ml plasma can be reliably estimated with each assay. The manual device may be preferable in situations where rapid availability of test results is necessary.

In Vitro Thrombogenicity Tests of Factor IX Concentrates

1979 ◽  
Vol 42 (05) ◽  
pp. 1355-1367 ◽  
Author(s):  
C V Prowse ◽  
A Chirnside ◽  
R A Elton
Keyword(s):  
Factor Viii ◽  
Partial Thromboplastin Time ◽  
Generation Time ◽  
Activated Partial Thromboplastin Time ◽  
Factor Ix ◽  
In Vitro Tests ◽  
Factor Viii Inhibitor ◽  
Factor Ixa ◽  
Viii Inhibitor

SummaryVarious factor IX concentrates have been examined in a number of in vitro tests of thrombogenicity. The results suggest that some tests are superfluous as in concentrates with activity in any of these tests activation is revealed by a combination of the non-activated partial thromboplastin time, the thrombin (or Xa) generation time and factor VIII inhibitor bypassing activity tests. Assay of individual coagulant enzymes revealed that most concentrates contained more factor IXa than Xa. However only a small number of concentrates, chiefly those that had been purposefully activated, contained appreciable amounts of either enzyme.

A Comparison of Heparin Potency Estimates Obtained by Activated Partial Thromboplastin Time and British Pharmacopoeial Assays

1985 ◽  
Vol 53 (01) ◽  
pp. 116-117 ◽  
Author(s):  
R E Merton ◽  
A D Curtis ◽  
D P Thomas
Keyword(s):  
United States ◽  
Partial Thromboplastin Time ◽  
Close Agreement ◽  
The United States ◽  
Activated Partial Thromboplastin Time ◽  
United States Pharmacopeia ◽  
International Unit ◽  
British Pharmacopoeia ◽  
States Pharmacopeia ◽  
Heparin Preparation

SummaryHeparin samples from five manufacturers were assayed by the revised British Pharmacopoeia (BP) heparin assay and the results compared with those obtained using the activated partial thromboplastin time (APTT) assay. The United States Pharmacopeia (USP) reference heparin preparation and the 4th International Standard (IS) for heparin were also assayed by the two methods relative to the 3rd IS. The results obtained by the revised BP assay were in close agreement with those obtained by the APTT assay for all the heparins that were tested. The assays revealed that there is at least a 10% discrepancy between the International Unit for heparin and the USP unit.

Sign in / Sign up

Export Citation Format

Share Document