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Dissertations / Theses on the topic 'Platelets count'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Ekbom, Lisa H. "Evaluation of the ADVIA®60 on highvalue platelets." Thesis, Uppsala University, Department of Medical Biochemistry and Microbiology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6149.

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<p>Platelets are the smallest cells in the blood. They are formed in the bone-marrow and are important for the blood coagulation. Platelet tranfusions are given to patients propyhlactically before an operation but also in therapeutical purpose in connection with bleeding. It’s importent that the quality controls of the platelet concentrates are reliable.</p><p>ADVIA®60 (Bayer HealthCare) is a fully automated cell counter which uses impedance principle to count platelets in blood samples. The purpose of the study was to evaluate this new instrument for use in the blood bank of Akademiska Sjukhu

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2

Corbett, Eric J. "Effects of Oral L-arginine Supplementation on Platelet Count and Maximal Oxygen Consumption in Healthy Males." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1239596277.

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3

Mitander, Maria. "Evaluation of platelet parameters from Advia 2120 and Sysmex XT-2000iV in samples from dogs, horses and cats." Thesis, Uppsala University, Department of Medical Biochemistry and Microbiology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9260.

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<p>Haematology instruments using optical and fluorescence techniques have improved the platelet count in domestic animals. There are still some difficulties present, especially when counting cat thrombocytes due to their ability to aggregate and the occurrence of large platelets.</p><p>The objective of this study was to evaluate and compare the platelet count, mean platelet volume and platelet crit in dogs, horses and cats on Advia 2120 and Sysmex XT-2000iV.</p><p>Fresh blood samples from 64 dogs, 40 horses and 39 cats with various medical conditions were analysed on both instruments. Manual b

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4

Hlavac, Nicole Regina Capacchi. "Avaliação de parâmetros plaquetários em cães saudáveis: efeitos da temperatura, tempo e tipo de anticoagulante." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49946.

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A contagem de plaquetas é um exame de rotina utilizado no auxilío do diagnóstico de diversos distúrbios hemostáticos, além de ser usada no monitoramento de pacientes, portanto existe a necessidade de obter parâmetros fidedignos para assegurar a existência de plaquetopenia ou plaquetose e alterações morfológicas destas células. A comum ocorrência de agregação plaquetária “in vitro” dificulta a análises destes parâmetros, evento devido ao uso incorreto da metodologia de coleta, armazenamento inadequado da amostra, assim como o uso incorreto do anticoagulante. O diagnóstico errôneo de plaquetopen

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5

Istrefi, Linda. "EN JÄMFÖRELSESTUDIE AV PLAST- OCH GLASHEMOCYTOMETRAR FÖR BERÄKNING AV BLODCELLER I VENÖST OCH KAPILLÄRT HELBLOD." Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-26966.

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Hematology-instruments that analyze blood cells can at specific casesbe followed by manual counting with a hemocytometer. The plastic hemocytometer which has a fixed coverslip and is assigned for disposable use, appears to reduce the problems arising from the use of the traditional glass hemocytometer, for instance coverslip-application difficulty and dust particles. Capillary whole blood sampling may be useful for patients at the emergency department and in addition, a smaller volume of blood is taken compared to venous blood sampling. This study will focus on the platelet- and leukocyte coun

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6

Puertas, Monica A. "Statistical and Prognostic Modeling of Clinical Outcomes with Complex Physiologic Data." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5106.

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Laboratory tests are a primary resource for diagnosing patient diseases. However, physicians often make decisions based on a single laboratory result and have a limited perspective of the role of commonly-measured parameters in enhancing the diagnostic process. By providing a dynamic patient profile, the diagnosis could be more accurate and timely, allowing physicians to anticipate changes in the recovery trajectory and intervene more effectively. The assessment and monitoring of the circulatory system is essential for patients in intensive care units (ICU). One component of this system is the

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7

Karlsson, Jessica. "Sample cradle prevents pre-analytic error on platelet counts but is not essential for hemoglobin measurement and prothrombin time." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-182146.

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Introduction: It is recommended to place all the vacuum tubes directly on a sample cradle after vein puncture to prevent analytic error. This recommendation is not always easy to follow because the samples are taken by different professionals under different situations. The three most common analyses, platelets count, haemoglobin and prothrombin time were tested. Therefore, it was interesting to compare results from the three most common analyses with or without sample cradle, to evaluate the influence of this step on the result. Methods: Three analyses were preformed, using blood from 50 di

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8

Santander, Mercado Alcides Ricardo. "Identification of Patient Recovery Patterns after Cardiovascular Surgery Based on Laboratory Tests Results." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3332.

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In this dissertation is proposed a methodology to identify patient's recovery patterns after cardiovascular surgery based on laboratory tests results. The main purpose is to enhance the understanding of the manifestations of postsurgical complications in patients who underwent cardiovascular surgery. The analysis of patients' recovery process is based on the relationship between plasma calcium, ionized calcium and platelet count over time. Laboratory results from the James A. Haley Veterans' Hospital databases, related to patients admitted to the Surgical Intensive Care Unit (SICU) after cardi

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9

Morowski, Martina [Verfasser], Bernhard Gutachter] Nieswandt, Thomas [Gutachter] [Dandekar, and Alma [Gutachter] Zernecke-Madsen. "Relevance of platelet count and ITAM-signalling pathway in murine models of haemostasis, thrombosis and thrombo-inflammation / Martina Morowski. Gutachter: Bernhard Nieswandt ; Thomas Dandekar ; Alma Zernecke-Madsen." Würzburg : Universität Würzburg, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-99193.

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10

Morowski, Martina Verfasser], Bernhard [Gutachter] Nieswandt, Thomas [Gutachter] [Dandekar, and Alma [Gutachter] Zernecke-Madsen. "Relevance of platelet count and ITAM-signalling pathway in murine models of haemostasis, thrombosis and thrombo-inflammation / Martina Morowski. Gutachter: Bernhard Nieswandt ; Thomas Dandekar ; Alma Zernecke-Madsen." Würzburg : Universität Würzburg, 2014. http://d-nb.info/1109749910/34.

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11

Andipatin, Michelle. "Understanding HELLP Syndrome in the South African context: a feminist study." Thesis, University of the Western Cape, 2012. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_4918_1365770471.

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<p>This thesis is about HELLP Syndrome (hemolysis, elevated liver enzymes, low platelet count in pregnancy): a devastating maternal hypertensive complication that results in multi-system changes that can rapidly deteriorate into organ failure and death. Despite rapid advancesin medical technology and medical science this disease continues to take&nbsp<br>the lives of women and their infants. The only effective intervention for this disorder is immediate termination irrespective of the gestational stage of the pregnancy. The primary objective of this thesis was to explore the subjective experie

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12

Ghelardi, Isis Raquel. "O uso do agente hemostático a base de quitosana no controle hemorrágico pós-exodontias realizadas em portadores de trombocitopenias." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5167/tde-28042014-162848/.

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Introdução: Trombocitopenia é a redução dos níveis plaquetários ocasionada por diversas condições, como hepatopatias e a Trombocitopenia Imune (TI), por exemplo. A redução de plaquetas na hepatopatia pode ocorrer devido à deficiência medular por hipovitaminose, aumento do consumo celular e hiperesplenismo e/ou devido à coagulação intravascular disseminada. Na Trombocitopenia Imune, a redução plaquetária ocorre tanto por maior destruição destas células quanto por diminuição medular de sua produção. Portadores de trombocitopenia podem apresentar achados orais como petéquias e/ou equimoses e sang

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13

Bätzel, Carolin. "Verbesserung der medizinischen Versorgung und des Outcomes sehr kleiner und leichter Frühgeborener durch klinisches Benchmarking." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2006. http://dx.doi.org/10.18452/15454.

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In der vorliegenden Arbeit wurde anhand der im Rahmen des Vermont-Oxford-Neonatal-Networks erhobenen Daten an der Berliner Klinik für Neonatologie der Charité Campus Mitte und der Abteilung für neonatologische Intensivmedizin der Universitätskinderklinik in Innsbruck ein Benchmarking-Projekt für die Jahre 1997 bis 2001 durchgeführt. Nach der Analyse des Outcomes wurde eine Analyse der externen Evidenz anhand von Literatursuche in PubMed und der Cochrane Datenbank für systematische Reviews durchgeführt. Danach wurde ein Fragebogen entworfen, der gezielt Handlungsstrategien und -richtlinien bezü

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14

Peprah, M. A. (Koranteng). "Platelet count trends in pregnant women who have pre-eclampsia with thrombocytopenia." Thesis, 2016. http://hdl.handle.net/10539/22571.

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A research report submitted to the Faculty of Health Sciences, University of the Witwatersrand, in fulfilment of the requirements for the degree of Master of Medicine in Obstetrics and Gynaecology MMed (O&G) Johannesburg, May 2016<br>Background Pre-eclampsia can result in abnormal platelet function and count. Due to lack of resources and the subsequent over burden of specimens sent to our National Health Laboratory Services (NHLS), these results may not be obtained on time. Obstetricians and anaesthetists therefore make assumptions about platelet count in pre-eclamptic women – a common assu

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15

CHEN, TZU-LING, and 陳姿伶. "Assessment of the efficacy of platelet transfusion with post-transfusion corrected count increment(CCI)." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/66130941400866318988.

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碩士<br>中華醫事科技大學<br>生物科技研究所<br>99<br>Many diseases may lead to thrombocytopenia, and platelet transfusion for this complication is the main treatment. Hemostasis is an important physiological function of platelet. To maintain this function, there must be enough quantity and quality of platelet to interact with coagulation factors. Whether platelet transfusion can effectively increase the quantity of platelet is an important indicator of the efficacy. Corrected count increment (CCI value) as the evaluation of efficacy of platelet transfusion, can be an objective and correct reference. From

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16

Morowski, Martina. "Relevance of platelet count and ITAM-signalling pathway in murine models of haemostasis, thrombosis and thrombo-inflammation." Doctoral thesis, 2014. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-99193.

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Platelets are important players in haemostasis and their activation is essential to limit post-traumatic blood loss upon vessel injury. On the other hand, pathological platelet activation may lead to thrombosis resulting in myocardial infarction and stroke. Platelet activation and subsequent thrombus formation are, therefore, tightly regulated and require a well-defined interplay of platelet surface receptors, intracellular signalling molecules, cytoskeletal rearrangements and the activation of the coagulation cascade. In vivo thrombosis and haemostasis models mimic thrombus formation at sites

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17

Blais, Normand. "Évaluation de l’utilité des technologies destinées à l’évaluation de la résistance physiologique aux antiplaquettaires en laboratoire." Thèse, 2008. http://hdl.handle.net/1866/2654.

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Introduction : L’effet biologique variable de l’aspirine a été attribué à un état de résistance pharmacologique. L’incidence de cette « résistance » varie selon la population ou la technologie étudiée. Méthodes : Nous avons déterminé la performance de 5 techniques évaluant l’effet de l’aspirine chez des sujets sains, non fumeurs et ne prenant aucune médication pouvant interférer avec la fonction plaquettaire. Des spécimens de sang et d’urine ont été obtenus avant et après 8-10 jours de prise de 80 mg d’aspirine. Résultats: Chez 45 sujets de 19-59 ans, la sensibilité (SE), la spécificité (SP)

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