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https://www.readbyqxmd.com/read/29454033/cause-or-coincidence-spontaneous-hematometra-in-young-women-on-depomedroxyprogesterone-acetate-a-small-case-series
#1
Julie G Thorne, Elizabeth H Russell, Danielle Rumbolt, Mary Anne Jamieson
BACKGROUND: Abdominal pain, secondary amenorrhea and abnormal uterine bleeding (AUB) are common gynecologic presentations in adolescence. Rarely this can be associated with an acquired hematometra. Hematometra is a condition of retained blood or clot within the uterus. High dose progestogenic agents in this age group have been implicated in the accumulation of a hematometra without other explanation. CASES: We present 4 cases of hematometra following depomedroxyprogesterone acetate (DMPA) therapy in previously menstruating adolescents...
February 14, 2018: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/29453138/increased-coagulation-index-as-measured-by-thromboelastography-during-ovarian-stimulation-for-in-vitro-fertilization-influence-of-the-final-oocyte-maturation-triggering-agent
#2
Ronit Beck-Fruchter, Israel Gavish, Shira Baram, Yoel Geslevich, Amir Weiss
OBJECTIVE: Thromboelastography (TEG) is a viscoelastic test of hemostasis which allows measurement of the processes of clot initiation, propagation, stabilization, and dissolution in real time. In this study we aimed to evaluate the alterations in coagulation as measured by TEG during In Vitro Fertilization (IVF) stimulation cycles and to investigate whether final oocyte maturation with recombinant hCG (rhCG) versus GnRH agonist results in a different coagulation state. STUDY DESIGN: This is a prospective observational study which included fifty-three normogonadotrophic women...
February 10, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29452445/suppressive-role-of-tissue-factor-pathway-inhibitor-%C3%AE-in-platelet-dependent-fibrin-formation-under-flow-is-restricted-to-low-procoagulant-strength
#3
Stella Thomassen, Tom G Mastenbroek, Frauke Swieringa, Kristien Winckers, Marion A H Feijge, Roy Schrijver, Judith M E M Cosemans, Susan A Maroney, Alan E Mast, Tilman M Hackeng, Johan W M Heemskerk
Tissue factor pathway inhibitor-alpha (TFPI-α) is a Kunitz-type serine protease inhibitor, which suppresses coagulation by inhibiting the tissue factor (TF)/factor VIIa complex as well as factor Xa. In static plasma-phospholipid systems, TFPI-α thus suppresses both factor Xa and thrombin generation. In this article, we used a microfluidics approach to investigate how TFPI-α regulates fibrin clot formation in platelet thrombi at low wall shear rate. We therefore hypothesized that the anticoagulant effect of TFPI-α in plasma is a function of the local procoagulant strength-defined as the magnitude of thrombin generation under flow, due to local activities of TF/factor VIIa and factor Xa...
February 16, 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29450732/combined-prostatic-urethral-lift-and-remodeling-of-the-prostate-and-bladder-neck-a-modified-transurethral-approach-in-the-treatment-of-symptomatic-lower-urinary-tract-obstruction
#4
Martin Schoenthaler, Karl-Dietrich Sievert, Dominik Stefan Schoeb, Arkadiusz Miernik, Thomas Kunit, Simon Hein, Thomas R W Herrmann, Konrad Wilhelm
PURPOSE: The aim of the study was to evaluate the feasibility and safety of combining prostatic urethral lift (PUL) and a limited resection of the prostatic middle lobe or bladder neck incision in the treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH). METHODS: Twenty-eight patients were treated at two tertiary centers and followed prospectively. Patient evaluations included patient characteristics, relief of LUTS symptoms, erectile and ejaculatory function, continence, operative time and adverse events...
February 15, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29450197/platelet-counts-in-insoluble-platelet-rich-fibrin-clots-a-direct-method-for-accurate-determination
#5
Yutaka Kitamura, Taisuke Watanabe, Masayuki Nakamura, Kazushige Isobe, Hideo Kawabata, Kohya Uematsu, Kazuhiro Okuda, Koh Nakata, Takaaki Tanaka, Tomoyuki Kawase
Platelet-rich fibrin (PRF) clots have been used in regenerative dentistry most often, with the assumption that growth factor levels are concentrated in proportion to the platelet concentration. Platelet counts in PRF are generally determined indirectly by platelet counting in other liquid fractions. This study shows a method for direct estimation of platelet counts in PRF. To validate this method by determination of the recovery rate, whole-blood samples were obtained with an anticoagulant from healthy donors, and platelet-rich plasma (PRP) fractions were clotted with CaCl 2 by centrifugation and digested with tissue-plasminogen activator...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29449120/bilateral-phlegmasia-cerulea-dolens-after-warfarin-reversal-for-acute-rectal-bleeding-a-case-report
#6
Burr Fong, Daniel Novak, Michael Dalley, Gregory Alfred
BACKGROUND: Deep vein thrombosis (DVT) is a common disease that is diagnosed in approximately 1 in 1000 adults annually. Extensive DVT can lead to life- or limb-threatening diagnoses such as phlegmasia cerulea dolens (PCD), phlegmasia alba dolens, and venous gangrene. PCD, also known as massive iliofemoral venous thrombosis, is rare, and a severe complication of DVT. CASE REPORT: We report a case of a 94-year-old bedridden woman with past medical history of dementia, hypertension, pulmonary embolism, DVT, and atrial fibrillation...
February 12, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29448297/anticoagulant-preferences-and-concerns-among-venous-thromboembolism-patients
#7
Pamela L Lutsey, Keith J Horvath, Lisa Fullam, Stephan Moll, Mary R Rooney, Mary Cushman, Neil A Zakai
BACKGROUND: Warfarin and direct oral anticoagulants (DOACs) are used for the initial treatment and secondary prevention of venous thromboembolism (VTE), and have similar efficacy. Patient concerns and preferences are important considerations when selecting an anticoagulant, yet these are not well studied. METHODS: VTE patients ( n = 519) were surveyed from online sources (clotconnect.org, stoptheclot.org and National Blood Clot Alliance Facebook followers [ n = 495]) and a haematology clinic in Vermont ( n = 24)...
February 15, 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29446989/comparison-of-the-efficacy-of-two-human-fibrinogen-concentrates-to-treat-dilutional-coagulopathy-in-vitro
#8
Thorsten Haas, Melissa M Cushing, Lars M Asmis
Both congenital and acquired fibrinogen deficiency can be safely treated with administration of fibrinogen concentrate. The aim of this study was to test the efficacy of a new fibrinogen product (Fibryga) compared to a licensed product (Haemocomplettan) in an in vitro model of dilutional coagulopathy. Ten blood specimens from healthy volunteers were diluted 1:1 with balanced crystalloid solution and subsequently supplemented with each fibrinogen concentrate at a dose replicating in vivo supplementation (50 mg kg -1 )...
February 15, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29446829/injection-testosterone-and-adverse-cardiovascular-events-a-case-crossover-analysis
#9
J Bradley Layton, Dongmei Li, Christoph R Meier, Julie L Sharpless, Til Stürmer, M Alan Brookhart
CONTEXT: Exogenous testosterone administration may affect blood clotting, polycythemia, and may increase atherosclerosis, though any association with cardiovascular events is unclear. While the literature is inconclusive, some studies have suggested testosterone use may increase short-term risk of cardiovascular events and stroke, and injection testosterone may convey higher risks than other dosage forms. OBJECTIVE: We sought to evaluate the short-term cardiovascular risk of receiving injection testosterone...
February 15, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29444200/loss-of-sirt3-accelerates-arterial-thrombosis-by-increasing-formation-of-neutrophil-extracellular-traps-and-plasma-tissue-factor-activity
#10
Daniel S Gaul, Julien Weber, Lambertus J Van Tits, Susanna Sluka, Lisa Pasterk, Martin F Reiner, Natacha Calatayud, Christine Lohmann, Roland Klingenberg, Jürgen Pahla, Daria Vdovenko, Felix C Tanner, Giovanni G Camici, Urs Eriksson, Johan Auwerx, François Mach, Stephan Windecker, Nicolas Rodondi, Thomas F L Uuml Scher, Stephan Winnik, Christian M Matter
BACKGROUND: Sirtuin 3 (Sirt3) is a mitochondrial, nicotinamide adenine dinucleotide (NAD+)-dependent deacetylase that reduces oxidative stress by activation of superoxide dismutase 2 (SOD2). Oxidative stress enhances arterial thrombosis. This study investigated the effects of genetic Sirt3 deletion on arterial thrombosis in mice in an inflammatory setting and assessed the clinical relevance of these findings in patients with ST-elevation myocardial infarction (STEMI). Methods and Results: Using a laser-induced carotid thrombosis model with lipopolysaccharide (LPS) challenge, in vivo time to thrombotic occlusion in Sirt3-/- mice (n = 6) was reduced by half compared to Sirt3+/+ wildtype (WT, n = 8, p<0...
February 10, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29442714/silver-nanoparticles-modified-with-sodium-triphosphate-antibacterial-activity-hemocompatibility-and-cytotoxicity
#11
Chuhan Cheng, Cheng Liu, Bing Han, Zhijun Sun, Yutong Wang, Zhenshuai Li, Hong Mo, Jun Zhang
In this study, we report silver nanoparticles (Ag NPs) modified with sodium triphosphate (STTP) (Ag-STPP NPs) prepared by a simple surface modification and chemical reduction method. It was confirmed by 31P NMR spectroscopy that STPP was successfully introduced to the surface of Ag NPs. It was revealed by conductivity change measurements, bacterial growth kinetics and antibacterial efficiency tests that Ag-STPP NPs still retained the strong antibacterial ability. It was demonstrated by hemolysis assays, red blood cell morphology measurements, plasma recalcification time and in vitro clotting times that Ag-STPP NPs had improved hemocompatibility...
June 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442531/the-impact-of-pneumatic-tube-transport-on-whole-blood-coagulation-and-platelet-function-assays
#12
Peter H Nissen, Dorte E Wulff, Niels Tørring, Anne-Mette Hvas
Pneumatic tube is an attractive way to transport blood samples from the emergency department to the central laboratory facility. We aimed to investigate the impact of pneumatic tube transportation on blood samples for analysis of whole blood coagulation and platelet function. We included 21 healthy adult individuals and measured global coagulation assays by rotational thromboelastometry (ROTEM) and platelet aggregation induced by arachidonic acid (AA) and adenosine diphosphate (ADP) using impedance aggregometry (ROTEM Platelet), on samples transported manually or by pneumatic tube transport...
February 14, 2018: Platelets
https://www.readbyqxmd.com/read/29440785/comparative-histologic-evaluation-of-titanium-platelet-rich-fibrin-and-platelet-rich-fibrin-in-hypertensive-and-smoker-participants-a-cell-cytology-study
#13
Anirban Chatterjee, Koel Debnath, Mohd Mustafa Ali, Chaitanya Babu, Pratibha Laxman Gowda
Introduction: In recent years, a growing interest has emerged with the use of platelet-rich products for the treatment of many clinical conditions in dentistry. Objective: The present study aimed to define the structural characteristics of titanium platelet-rich fibrin (TPRF) and PRF in hypertensive and smoker participants. Materials and Methods: Ten milliliters of blood samples was drawn using a syringe form ninety participants (healthy, hypertensive, and smokers)...
May 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29438036/cervical-ica-pseudo-occlusion-on-single-phase-cta-in-patients-with-acute-terminal-ica-occlusion-what-is-the-mechanism-and-can-delayed-cta-aid-diagnosis
#14
James Wareham, Robert Crossley, Sarah Barr, Alex Mortimer
BACKGROUND: Single-phase CT angiography (CTA) forms the basis of hyperacute stroke imaging but many patients with terminal internal carotid artery (ICA) occlusion exhibit a pseudo-occlusion of the cervical ICA whereby a column of unopacified blood mimics a tandem cervical ICA lesion. We aimed to investigate the utility of a delayed phase acquisition to aid identification of a pseudo-occlusion and investigated the mechanism for this imaging artefact. METHODS: Thirteen patients with a pseudo-occlusion were compared with 13 patients without...
February 6, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29437487/swim-exercise-inhibits-hemostatic-abnormalities-in-a-rat-model-of-obesity-and-insulin-resistance
#15
Mohammad Dallak, Ismaeel Bin-Jaliah, Hussein F Sakr, Bahjat Al-Ani, Mohamed A Haidara
BACKGROUND: We sought to determine whether swim exercise can inhibit high carbohydrate and fat diet (HCFD)-induced biomarkers of coagulation and thrombosis. MATERIAL AND METHODS: Rats were either fed with HCFD (model group) or a standard laboratory chow (control group) for 15 weeks. Swim exercise-'treated' rats started swim exercise training from the 11 th week until being sacrificed, on Week 15. RESULTS: HCFD caused a significant increase in blood glucose, insulin resistance (HOMA-IR), lipidemia, and inflammatory biomarkers...
February 13, 2018: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29434525/detecting-clinically-relevant-rivaroxaban-or-dabigatran-levels-by-routine-coagulation-tests-or-thromboelastography-in-a-cohort-of-patients-with-atrial-fibrillation
#16
Yvonne M C Henskens, Anouk J W Gulpen, René van Oerle, Rick Wetzels, Paul Verhezen, Henri Spronk, Simon Schalla, Harry J Crijns, Hugo Ten Cate, Arina Ten Cate-Hoek
Background: Traditional coagulation tests are included in emergency guidelines for management of patients on direct oral anticoagulants (DOACs) who experience acute bleeding or require surgery. We determined the ability of traditional coagulation tests and fast whole blood thromboelastography (ROTEM®) to screen for anticoagulation activity of dabigatran and rivaroxaban as low as 30 ng/mL. Methods: One hundred eighty-four citrated blood samples (75 dabigatran, 109 rivaroxaban) were collected from patients with non-valvular atrial fibrillation (NVAF), to perform screening tests from different manufacturers, (diluted, D) PT, aPTT, TT and ROTEM®...
2018: Thrombosis Journal
https://www.readbyqxmd.com/read/29433148/international-council-for-standardization-in-haematology-icsh-recommendations-for-laboratory-measurement-of-direct-oral-anticoagulants
#17
Robert C Gosselin, Dorothy M Adcock, Shannon M Bates, Jonathan Douxfils, Emmanuel J Favaloro, Isabelle Gouin-Thibault, Cecilia Guillermo, Yohko Kawai, Edelgard Lindhoff-Last, Steve Kitchen
This guidance document was prepared on behalf of the International Council for Standardization in Haematology (ICSH) for providing haemostasis-related guidance documents for clinical laboratories. This inaugural coagulation ICSH document was developed by an ad hoc committee, comprised of international clinical and laboratory direct acting oral anticoagulant (DOAC) experts. The committee developed consensus recommendations for laboratory measurement of DOACs (dabigatran, rivaroxaban, apixaban and edoxaban), which would be germane for laboratories assessing DOAC anticoagulation...
February 12, 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29430670/the-effect-of-3-resuscitative-fluid-therapies-on-hemostasis-as-measured-by-rotational-thromboelastometry-in-dogs
#18
Sunita Seshia, M Casey Gaunt, Beverly A Kidney, Marion L Jackson
BACKGROUND: Evidence suggests that administration of intravenous fluids impairs hemostasis. Thromboelastometry (TEM) may provide a more sensitive measure of the fluid effects on hemostasis than traditional coagulation tests. OBJECTIVE: The study aim was to determine if resuscitative fluid therapy affects hemostasis, as measured by TEM. MATERIALS AND METHODS: Using a randomized crossover design, 6 healthy dogs were administered intravenous colloid, crystalloid, and hypertonic saline at therapeutic doses...
February 11, 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/29429408/concentration-dependent-systemic-response-after-inhalation-of-nano-sized-zinc-oxide-particles-in-human-volunteers
#19
Christian Monsé, Olaf Hagemeyer, Monika Raulf, Birger Jettkant, Vera van Kampen, Benjamin Kendzia, Vitali Gering, Günther Kappert, Tobias Weiss, Nadin Ulrich, Eike-Maximilian Marek, Jürgen Bünger, Thomas Brüning, Rolf Merget
BACKGROUND: Inhalation of high concentrations of zinc oxide particles (ZnO) may cause metal fume fever. In an earlier human inhalation study, no effects were observed after exposure to ZnO concentrations of 0.5 mg/m3. Further data from experimental studies with pure ZnO in the concentration range between 0.5 and 2.5 mg/m3 are not available. It was the aim of this experimental study to establish the concentration-response relationship of pure nano-sized ZnO particles. METHODS: Sixteen healthy subjects were exposed to filtered air and ZnO particles (0...
February 12, 2018: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29426727/setting-the-stage-for-individualized-therapy-in-hemophilia-what-role-can-pharmacokinetics-play
#20
REVIEW
H C A M Hazendonk, I van Moort, R A A Mathôt, K Fijnvandraat, F W G Leebeek, P W Collins, M H Cnossen
Replacement therapy with clotting factor concentrates (CFC) is the mainstay of treatment in hemophilia. Its widespread application has led to a dramatic decrease in morbidity and mortality in patients, with concomitant improvement of quality of life. However, dosing is challenging and costs are high. This review discusses benefits and limitations of pharmacokinetic (PK)-guided dosing of replacement therapy as an alternative for current dosing regimens. Dosing of CFC is now primarily based on body weight and based on its in vivo recovery (IVR)...
January 31, 2018: Blood Reviews
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