Article
Pharmacology & Pharmacy
Keishi Yamasaki, Koji Nishi, Kenji Tsukigawa, Kazuaki Taguchi, Masaki Otagiri, Hakaru Seo
Summary: This study examined several factors that may lead to the formation of precipitates when using Nafamostat mesilate (NFM) as an anticoagulant during hemodialysis. It was found that precipitates could form under certain conditions, potentially disrupting the dialysis process.
BIOLOGICAL & PHARMACEUTICAL BULLETIN
(2021)
Article
Medicine, General & Internal
Mouhamed Djahoum Moussa, Jerome Soquet, Antoine Lamer, Julien Labreuche, Guillaume Gantois, Annabelle Dupont, Osama Abou-Arab, Natacha Rousse, Vincent Liu, Caroline Brandt, Valentin Foulon, Guillaume Leroy, Guillaume Schurtz, Emmanuel Jeanpierre, Alain Duhamel, Sophie Susen, Andre Vincentelli, Emmanuel Robin
Summary: This study aimed to investigate the relationship between anti-FXa and aPTT during VA-ECMO support. The results showed a significant association between the two, but with highly discordant values modulated by biological co-variables, and they were not predictive of bleeding or thrombotic complications.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Pediatrics
Mai J. Miyaji, Kentaro Ide, Kohei Takashima, Mikiko Maeno, Kelli A. Krallman, Danielle Lazear, Stuart L. Goldstein
Summary: Both RCA and NM showed satisfactory anticoagulation effects in pediatric CKRT, with no difference in major bleeding rates.
PEDIATRIC NEPHROLOGY
(2022)
Article
Genetics & Heredity
Henrike Kuder, S. Kent Dickeson, Marjory B. Brooks, Alexandra Kehl, Elisabeth Mueller, David Gailani, Urs Giger
Summary: FXI deficiency in Maine Coon cats (MCCs) was found to be associated with a specific mutation, V516M, which led to abnormal bleeding tendencies. The mutant allele frequency in MCCs was higher in Europe compared to other breeds. The V516M variant caused a reduced FXI activity and altered protease active site conformation, affecting clotting efficacy and FIX activation. Genotyping is recommended before invasive procedures or breeding due to the prevalence of this variant in MCCs.
Article
Hematology
Christoph Schriefl, Christian Schoergenhofer, Juergen Grafeneder, Michael Poppe, Christian Clodi, Matthias Mueller, Florian Ettl, Bernd Jilma, Pia Wallmueller, Nina Buchtele, Constantin Weikert, Heidrun Losert, Michael Holzer, Fritz Sterz, Michael Schwameis
Summary: Coagulation abnormalities following successful resuscitation from cardiac arrest may be linked to unfavorable neurologic outcomes. Specifically, prolonged aPTT upon admission is associated with an increased risk of unfavorable neurologic function after successful resuscitation.
THROMBOSIS AND HAEMOSTASIS
(2021)
Review
Medicine, General & Internal
Rita Carlotta Santoro, Angelo Claudio Molinari, Marzia Leotta, Tiziano Martini
Summary: Activated partial thromboplastin time (aPTT) is a crucial test for screening coagulation problems. Extended aPTT with normal prothrombin time can lead to delayed surgery, emotional stress, increased costs, and requires further testing for factor deficiencies or presence of anticoagulants. It is important to identify the cause of prolonged aPTT to guide appropriate diagnosis and treatment choices.
MEDICINA-LITHUANIA
(2023)
Article
Medical Laboratory Technology
Josep Miquel Bauca, Eva Ajzner, Janne Cadamuro, Andreas Hillarp, Ann Helen Kristoffersen, Piet Meijer
Summary: This study assessed the impact of methodological diversity on APTT mixing test results and their interpretation. Despite using different methodologies, most European laboratories obtained valid results. However, the classification of the results could be improved.
CLINICA CHIMICA ACTA
(2022)
Article
Medicine, General & Internal
Wan Hui Wong, Chuen Wen Tan, Nabeelah Binti Abdul Khalid, Nadjwa Zamalek Dalimoenthe, Christina Yip, Chaicharoen Tantanate, Rodelio D. Lim, Ji Hyun Kim, Heng Joo Ng
Summary: Reagent type significantly affects APTT-based clot waveform analysis (CWA), and standardized methods are needed for potential diagnostic use. A study involving 1055 healthy volunteers from the Asia-Pacific region showed that CWA parameters varied less than 10% between reagent lots. Age and gender were found to have a weak correlation with CWA, requiring further investigation.
Article
Medical Laboratory Technology
Marija Milos, Domagoj Marijancevic, Ana Kozmar, Branimir Anic, Desiree Coen Herak
Summary: The concomitant presence of lupus anticoagulant (LA) and monoclonal immunoglobulin in the same patient is uncommon. In this case, the patient showed dramatically prolonged prothrombin time and activated partial thromboplastin time without bleeding manifestations. The normalization of coagulation screening results with decreasing monoclonal IgM concentration suggests a potential relationship between monoclonal IgM and the prolonged coagulation results.
CLINICA CHIMICA ACTA
(2022)
Review
Hematology
Rebecca Swayngim, Candice Preslaski, Clay Cothren Burlew, Jacob Beyer
Summary: Review of available evidence comparing aPTT and anti-Xa monitoring for therapeutic UFH did not show a significant difference in clinical outcomes of bleeding, thrombosis, or mortality.
THROMBOSIS RESEARCH
(2021)
Article
Hematology
Dorothy M. Adcock, Gary W. Moore, Silmara de Lima Montalvao, Geoffrey Kershaw, Robert C. Gosselin
Summary: Mixing studies are useful for investigating prolonged aPTT or PT and differentiating between factor deficiency and inhibitor. However, there is a lack of standardization in interpreting the results and testing protocols.
SEMINARS IN THROMBOSIS AND HEMOSTASIS
(2023)
Article
Medical Laboratory Technology
Ana Bronic, Sandra Margetic, Desiree Coen Herak, Marija Milic, Branka Kresic, Vanja Radisic Biljak, Jasna Lenicek Krleza
Summary: The study found significant differences in the reporting of aPTT results among laboratories, which could impact result comparability. It is recommended that laboratories use the mean of aPTT(s) reference interval as the denominator for calculating aPTT(r) in order to improve result consistency. Consideration of coagulometer type is crucial when evaluating aPTT proficiency test results to ensure performance meets acceptable criteria.
Article
Medicine, General & Internal
Yuan Teng, Shujie Yan, Gang Liu, Song Lou, Yang Zhang, Bingyang Ji
Summary: The study found poor agreement between POC-aPTT and LAB-aPTT, indicating that POC-aPTT is not suitable for anticoagulation monitoring in adult ECMO patients.
FRONTIERS IN MEDICINE
(2022)
Article
Biochemistry & Molecular Biology
Paul Billoir, Thomas Elie, Jerrold H. Levy, Emmanuel Besnier, Bertrand Dureuil, Benoit Veber, Veronique Le Cam-Duchez, Thomas Clavier
Summary: This study evaluated the correlation between aPTT, anti-Xa activity, and thrombin generation in UFH-treated ICU patients. The results showed that aPTT and anti-Xa activity were correlated with thrombin generation and inflammatory response, but the correlation was higher with anti-Xa activity compared to aPTT.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Cardiac & Cardiovascular Systems
Han Yin, Xingyu Cheng, Yanting Liang, Anbang Liu, Haochen Wang, Fengyao Liu, Lan Guo, Huan Ma, Qingshan Geng
Summary: The study found a strong correlation between perceived stress and the coagulation function indicator APTT, with higher perceived stress associated with shorter APTT. Increased APTT and perceived stress levels could predict cardiovascular outcomes, but the predictive values decrease when adjusted simultaneously.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2021)