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Phlebotomy

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https://www.readbyqxmd.com/read/28239509/system-design-and-development-of-a-robotic-device-for-automated-venipuncture-and-diagnostic-blood-cell-analysis
#1
Max L Balter, Alvin I Chen, Alex Fromholtz, Alex Gorshkov, Tim J Maguire, Martin L Yarmush
Diagnostic blood testing is the most prevalent medical procedure performed in the world and forms the cornerstone of modern health care delivery. Yet blood tests are still predominantly carried out in centralized labs using large-volume samples acquired by manual venipuncture, and no end-to-end solution from blood draw to sample analysis exists today. Our group is developing a platform device that merges robotic phlebotomy with automated diagnostics to rapidly deliver patient information at the site of the blood draw...
October 2016: Proceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems
https://www.readbyqxmd.com/read/28237127/-prevalence-and-risk-factors-for-sickle-retinopathy-in-a-sub-saharan-comprehensive-sickle-cell-center
#2
A K Dembélé, B A Toure, Y S Sarro, A Guindo, B Fané, L Offredo, S Kené, I Conaré, O Tessougué, Y Traoré, Y Badiaga, M B Sidibé, D Diabaté, M Coulibaly, M Kanta, B Ranque, D A Diallo
INTRODUCTION: Retinopathy is a chronic complication with severe functional consequences in patients with sickle cell disease. Its prevalence is not well known in sub-Saharan Africa because of the absence of screening. We report here the results of a routine screening for sickle retinopathy in a Comprehensive Sickle Cell Center in Sub-Saharan Africa. METHODS: Screening of sickle retinopathy was carried out in all sickle cell patients aged 10 and over, followed between 2010 and 2012...
February 22, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28211259/liver-transplantation-from-a-deceased-donor-with-%C3%AE-thalassemia-intermedia-is-not-contraindicated-a-case-report
#3
Ersin Gumus, Osman Abbasoglu, Cahit Tanyel, Fatma Gumruk, Hasan Ozen, Aysel Yuce
The use of extended criteria donors who might have previously been deemed unsuitable is an option to increase the organ supply for transplantation. This report presents a pediatric case of a successful liver transplantation from a donor with β-thalassemia intermedia. A patient, 6-year-old female, with a diagnosis of cryptogenic liver cirrhosis underwent deceased donor liver transplantation from a thalassemic donor. Extreme hyperferritinemia was detected shortly after transplantation. The most probable cause of hyperferritinemia was iron overload secondary to transplantation of a hemosiderotic liver...
February 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28210512/porphyria-cutanea-tarda-in-a-patient-with-end-stage-renal-disease-a-case-of-successful-treatment-with-deferoxamine-and-ferric-carboxymaltose
#4
Natacha Rodrigues, Fernando Caeiro, Alice Santana, Teresa Mendes, Leonor Lopes
Porphyria cutanea tarda (PCT) is a rare disease, with a strong association with hepatitis C virus. PCT is particularly problematic in end-stage renal disease patients as they have no renal excretion of porphyrins and these are poorly dialyzed. Also, conventional treatment of PCT is compromised in these patients as hydroxychloroquine is contraindicated, phlebotomies with the stipulated frequency are poorly tolerated in already anaemia-prone patients, and iron-chelating agents are less efficient in removing iron and contribute to worsening anaemia...
2017: Case Reports in Nephrology
https://www.readbyqxmd.com/read/28193568/markers-of-iron-deficiency-in-patients-with-polycythemia-vera-receiving-ruxolitinib-or-best-available-therapy
#5
Srdan Verstovsek, Claire N Harrison, Jean-Jacques Kiladjian, Carole Miller, Ahmad B Naim, Dilan C Paranagama, Dany Habr, Alessandro M Vannucchi
Polycythemia vera (PV) is characterized by erythropoiesis and JAK2-activating mutations, with increased risks of morbidity and mortality. Most patients with PV are iron deficient, and treatment often includes hematocrit control with phlebotomy, which may exacerbate iron deficiency-associated complications. The phase 3 RESPONSE trial evaluated the JAK1/JAK2 inhibitor ruxolitinib (n=110) versus best available therapy (BAT; n=112) in patients with PV who were hydroxyurea-resistant/intolerant. Ruxolitinib was superior to BAT for hematocrit control, reduction in splenomegaly, and blood count normalization...
January 31, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28178597/determination-of-topiramate-in-dried-blood-spots-using-single-quadrupole-gas-chromatography-mass-spectrometry-after-flash-methylation-with-trimethylanilinium-hydroxide
#6
Roberta Zilles Hahn, Marina Venzon Antunes, Priscila Costa Arnhold, Natalia Bordin Andriguetti, Simone Gasparin Verza, Rafael Linden
Dried blood spots (DBS) sampling obtained from fingerpricks is a promising and patient friendly alternative for obtaining samples for drug quantification, that could be of interest for topiramate (TOP) therapeutic drug monitoring. The aim of this study was to develop and validate a simple and fast GC-MS assay for TOP measurement in dried blood spots (DBS). The method uses a liquid extraction of one 8mm DBS, followed by a flash methylation with TMAH, and separation in a DB-5ms capillary column. Total analytical run time was 15min...
February 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28150363/blood-donation-and-testosterone-replacement-therapy
#7
Benjamin Chin-Yee, Alejandro Lazo-Langner, Terrie Butler-Foster, Cyrus Hsia, Ian Chin-Yee
BACKGROUND: Polycythemia is the most common adverse effect of testosterone replacement therapy (TRT) and may predispose patients to adverse vascular events. Current Canadian guidelines recommend regular laboratory monitoring and discontinuing TRT or reducing the dose if the hematocrit exceeds 54% (hemoglobin ≥180 g/L). This threshold has been interpreted by some physicians and patients to indicate the need for phlebotomy or blood donation while on TRT. STUDY DESIGN AND METHODS: We reviewed all male blood donors in Southwestern Ontario at Canadian Blood Services from December 2013 to March 2016 who self-identified or were found on donor screening to be on TRT...
February 1, 2017: Transfusion
https://www.readbyqxmd.com/read/28141592/exposure-incidents-among-medical-students-in-a-high-prevalence-hiv-setting
#8
Theresa Marié Rossouw, Marietjie Van Rooyen, Karin Louise Richter
INTRODUCTION: Occupational injuries in medical students are concerning, especially in countries with a high prevalence of bloodborne infections. With more HIV-infected patients on antiretroviral treatment, appropriate post-exposure prophylaxis (PEP) depends on knowledge of source patients' infection status and treatment response. This study determined the number and type of exposure incidents, reporting practices, and PEP use among medical students at the University of Pretoria, South Africa...
January 30, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28138090/standardizing-phlebotomy-job-descriptions
#9
Jim Cook
BACKGROUND: The University of Maryland Medical System, like all other medical systems, is faced with providing the highest quality care in an environment of increased demands and competition for resources. Some responses to this pressure include improved integration, coordination, and efficiency. Laboratory integration has been highlighted by our medical system as a promising area for improvement. Standardization of practices, including job descriptions, is an important step on this journey...
February 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28133557/secondary-hemochromatosis-due-to-chronic-oral-iron-supplementation
#10
Ronald Lands, Emmanuel Isang
Iron may accumulate in excess due to a mutation in the HFE gene that upregulates absorption or when it is ingested or infused at levels that exceed the body's ability to clear it. Excess iron deposition in parenchymal tissue causes injury and ultimately organ dysfunction. Diabetes mellitus and hepatic cirrhosis due to pancreas and liver damage are just two examples of diseases that result from iron overload. Despite the rapid growth of information regarding iron metabolism and iron overload states, the most effective treatment is still serial phlebotomies...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28125551/o-003-the-brain-as-extraintestinal-ibd-manifestation-are-brain-and-cognitive-differences-in-pediatric-crohn-s-disease-associated-with-immune-gene-expression
#11
Christine Mrakotsky, Dunn W Augustine, Christopher Watson, James Canavan, Michael Rivkin, Scott Snapper
BACKGROUND: Structural brain changes in gray and white matter have been previously found in adults with Crohn's disease (CD). We have recently shown similar effects for pediatric CD in 2 separate studies (Mrakotsky et al., 2012, 2013, 2015), particularly for cortical and subcortical brain regions important for cognition, memory and emotion. Our prior data also revealed serum markers of inflammation and steroid therapy to be negatively associated with cortical thickness, subcortical volume, cognitive and school function, however, associations between brain structure and more detailed inflammatory profiles have not been studied...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28123936/metabolomic-profiling-identifies-potential-pathways-involved-in-the-interaction-of-iron-homeostasis-with-glucose-metabolism
#12
Lars Stechemesser, Sebastian K Eder, Andrej Wagner, Wolfgang Patsch, Alexandra Feldman, Michael Strasser, Simon Auer, David Niederseer, Ursula Huber-Schönauer, Bernhard Paulweber, Stephan Zandanell, Sandra Ruhaltinger, Daniel Weghuber, Elisabeth Haschke-Becher, Christoph Grabmer, Eva Rohde, Christian Datz, Thomas K Felder, Elmar Aigner
OBJECTIVE: Elevated serum ferritin has been linked to type 2 diabetes (T2D) and adverse health outcomes in subjects with the Metabolic Syndrome (MetS). As the mechanisms underlying the negative impact of excess iron have so far remained elusive, we aimed to identify potential links between iron homeostasis and metabolic pathways. METHODS: In a cross-sectional study, data were obtained from 163 patients, allocated to one of three groups: (1) lean, healthy controls (n = 53), (2) MetS without hyperferritinemia (n = 54) and (3) MetS with hyperferritinemia (n = 56)...
January 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28116635/a-somatic-hif2%C3%AE-mutation-induced-multiple-and-recurrent-pheochromocytoma-paraganglioma-with-polycythemia-clinical-study-with-literature-review
#13
Qiuli Liu, Yan Wang, Dali Tong, Gaolei Liu, Wenqiang Yuan, Jun Zhang, Jin Ye, Yao Zhang, Gang Yuan, Qingxing Feng, Dianzheng Zhang, Jun Jiang
A syndrome known as pheochromocytomas (PCC)/paragangliomas (PGL) and polycythemia resulted from gain-of-function mutation of hypoxia-inducible factor 2α (HIF2α) has been reported recently. However, clinical features of this syndrome vary from patient to patient. In our study, we described the clinical features of the patient within 15-year follow-up with a literature review. The patient presented with "red face" since childhood and was diagnosed with polycythemia and pheochromocytoma in 2000, and then, tumor was removed at his age of 27 (year 2000)...
January 23, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28113109/pegylated-interferon-alpha-2a-is-clinically-effective-and-tolerable-in-myeloproliferative-neoplasm-patients-treated-off-clinical-trial
#14
K Gowin, T Jain, H Kosiorek, R Tibes, J Camoriano, J Palmer, R Mesa
Polycythemia vera, essential thrombocytosis, and myelofibrosis are chronic Philadelphia-negative myeloproliferative neoplasms that are characterized by clonal hematopoiesis, splenomegaly, risk of hemorrhagic and thrombotic sequelae, and profound symptom burden. We review the outcomes of 75 myeloproliferative neoplasm patients treated with pegylated interferon alpha 2a off study at an academic medical center. In the 56 treated polycythemia vera and essential thrombocytosis patients, a complete or partial response was obtained in 78...
January 5, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28107821/effects-of-a-single-20%C3%A2-mg-dose-of-letrozole-on-ovarian-function-post-dominant-follicle-selection-an-exploratory-randomized-controlled-trial
#15
H C M Allaway, D R Chizen, G P Adams, R A Pierson
BACKGROUND: Our objective was to explore the impact of a single dose of an aromatase inhibitor (letrozole) administered at defined times of the follicular phase or immediately after ovulation on dominant follicle development, luteogenesis and new follicle wave emergence. METHODS: A prospective pilot study using a randomized complete block, controlled, open label design was conducted at an academic clinical research center. Forty-five healthy, female volunteers (25...
January 21, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28107068/successful-treatment-of-suspected-pulmonary-arterial-hypertension-in-a-mealy-amazon-parrot-amazona-farinose
#16
Sean M Brady, Anne Burgdorf-Moisuk, Sarah Silverman, Raymund F Wack
A 25-year-old, male mealy Amazon parrot (Amazona farinose) with a history of polycythemia, hepatomegaly, and epistaxis was evaluated for progressive lethargy and anorexia. Clinical laboratory testing revealed severe polycythemia (71%), hypophosphatemia (1.6 mg/dL), and mild hypokalemia (2.8 mEq/L). Radiographs showed marked hepatomegaly and loss of air sac space. Despite supportive treatments, the bird's condition deteriorated, and it developed ataxia, was unable to fly, and became oxygen dependent. An echocardiogram, including an air bubble study, revealed a right-to-left atrial shunt and presumed pulmonary arterial hypertension...
December 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28096012/effects-of-music-therapy-and-distraction-cards-on-pain-relief-during-phlebotomy-in-children
#17
Diler Aydin, Nejla Canbulat Sahiner
AIM: To investigate three different distraction methods (distraction cards, listening to music, and distraction cards + music) on pain and anxiety relief in children during phlebotomy. METHODS: This study was a prospective, randomized, controlled trial. The sample consisted of children aged 7 to 12years who required blood tests. The children were randomized into four groups, distraction cards, music, distraction cards + music, and controls. Data were obtained through face-to-face interviews with the children, their parents, and the observer before and after the procedure...
February 2017: Applied Nursing Research: ANR
https://www.readbyqxmd.com/read/28095380/polycythemia-vera-management-and-challenges-in-the-community-health-setting
#18
Aaron T Gerds, Kim-Hien Dao
Patients with polycythemia vera (PV) experience shortened survival, increased risk of thromboembolic and hemorrhagic events, and burdensome symptoms. For all patients with PV, treatment with aspirin and hematocrit control with phlebotomy are recommended. In addition, patients with high-risk status or poor hematocrit control benefit from cytoreductive therapy with hydroxyurea, although approximately 1 in 4 patients develops resistance or intolerance. For patients who are resistant to or intolerant of hydroxyurea, studies have shown that ruxolitinib, a Janus kinase 1/2 inhibitor, provides hematocrit control, reduces spleen size, normalizes blood counts, and improves PV-related symptoms...
January 18, 2017: Oncology
https://www.readbyqxmd.com/read/28094851/blood-transfusion-for-preventing-primary-and-secondary-stroke-in-people-with-sickle-cell-disease
#19
REVIEW
Lise J Estcourt, Patricia M Fortin, Sally Hopewell, Marialena Trivella, Winfred C Wang
BACKGROUND: Sickle cell disease is one of the commonest severe monogenic disorders in the world, due to the inheritance of two abnormal haemoglobin (beta globin) genes. Sickle cell disease can cause severe pain, significant end-organ damage, pulmonary complications, and premature death. Stroke affects around 10% of children with sickle cell anaemia (HbSS). Chronic blood transfusions may reduce the risk of vaso-occlusion and stroke by diluting the proportion of sickled cells in the circulation...
January 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28069401/analytes-related-to-erythrocyte-metabolism-are-reliable-biomarkers-for-preanalytical-error-due-to-delayed-plasma-processing-in-metabolomics-studies
#20
Mahim Jain, Adam D Kennedy, Sarah H Elsea, Marcus J Miller
BACKGROUND: Delaying plasma separation after phlebotomy (processing delay) can cause perturbations of numerous small molecule analytes. This poses a major challenge to the clinical application of metabolomics analyses. In this study, we further define the analyte changes that occur during processing delays and generate a model for the post hoc detection of this preanalytical error. METHODS: Using an untargeted metabolomics platform we analyzed EDTA-preserved plasma specimens harvested after processing delays lasting from minutes to days...
March 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
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