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https://www.readbyqxmd.com/read/28532176/synthesis-of-n-alkylated-chitosan-and-its-interactions-with-blood
#1
Yuchen Huang, Yi Zhang, Longbao Feng, Liumin He, Rui Guo, Wei Xue
When hydrophobically modified chitosan (HM-CHI) comes into contact with red blood cells (RBCs), it can cause agglomeration. This property leads HM-CHI to be a potential agent to form a rapid haemostatic plug to stop bleeding at wound sites. In this study, we investigated the properties of the HM-CHI biopolymer to act as an agent that rapidly clots blood. We have examined the synthesis and structural characteristics of HM-CHI - blood substances using X-ray diffraction, infrared spectroscopy and elemental analysis...
May 22, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28511448/rectus-sheath-haematoma-secondary-to-enoxaparin-injection-a-rare-case-report
#2
Sidharth Agarwal, Yamanur P Lamani, Bhimanagouda V Goudar, Eshwar B Kalburgi, Bheemappa K Bhavi
Rectus sheath haematoma is a well-documented condition with an elusive diagnosis. It is an uncommon complication of anti-coagulation therapy, which can have a mortality of upto 25%. The patient discussed here is a 40-year-old female who was on Inj. Enoxaparin, who developed severe abdominal pain and hypovolemia after three days of treatment. Ultrasonography and CT scan showed a large rectus sheath haematoma on the right side, which was crossing the midline towards the left side. Inj. Enoxaparin was stopped and the patient was posted for surgery...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28488236/dabigatran-plasma-levels-aptt-and-thromboelastography-in-patients-with-af-implications-for-allowing-early-non-elective-surgical-procedures
#3
Athanasios Pipilis, Stamatis Makrygiannis, Georgios Anagnostou, Sotirios Kaliampakos, Georgios Tsakonas, Nikolaos Sourlas, Panagiotis Mallios, Theodora Kostelidou
According to current recommendations, patients on dabigatran should stop the drug 24-96 h before scheduled surgery. This may seem too long for non-elective cases. The aim of our study was to assess the number of patients on dabigatran who could theoretically undergo surgery 12 h post last drug dosing. We measured dabigatran plasma trough concentration by Hemoclot assay in 75 consecutive patients receiving dabigatran. Coagulation was assessed by aPTT and thromboelastography (TEG). Plasma levels ≤30 ng/ml were considered low...
May 9, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28457369/safety-and-efficacy-of-citrate-anticoagulation-for-continuous-renal-replacement-therapy-for-acute-kidney-injury-after-liver-transplantation-a-single-center-experience
#4
N Pertica, L Cicciarella, A Carraro, U Montin, P Violi, A Lupo, G Zaza
BACKGROUND: Acute kidney injury (AKI) after liver transplantation (LT) is a frequent and serious complication. The incidence of AKI requiring continuous renal replacement therapy (CRRT) ranges from 10% to 30%. Kidney Disease: Improving Global Outcomes guidelines indicate the use of citrate as a locoregional anticoagulant drug for CRRT regardless of the patient's hemorrhagic risk. Despite this indication, however, the use of citrate is still under debate in patients with liver failure and/or LT owing to the potential risk of plasmatic citrate accumulation due to reduced liver clearance...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28395294/treatment-of-persistent-gross-hematuria-with-tranexamic-acid-in-autosomal-dominant-polycystic-kidney-disease
#5
Qing Yao, Ming Wu, Jie Zhou, Meiyang Zhou, Dongping Chen, Lili Fu, Rongrong Bian, Xiaohong Xing, Lijun Sun, Xiaohong Hu, Lin Li, Bing Dai, Rudolf P Wüthrich, Yiyi Ma, Chang-Lin Mei
BACKGROUND/AIMS: In this retrospective study we aimed to compare the effect of tranexamic acid (TXA) vs etamsylate, two hemostatic agents, on hematuria duration in autosomal dominant polycystic kidney disease (ADPKD) patients with persistent gross hematuria. METHODS: This is a retrospective study of 40 patients with ADPKD and macroscopic hematuria. 20 patients receiving TXA and snake venom blood clotting enzyme injection were compared with 20 matched patients receiving etamsylate and snake venom blood clotting enzyme injection...
2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28360438/comparing-adrenaline-with-tranexamic-acid-to-control-acute-endobronchial-bleeding-a-randomized-controlled-trial
#6
Mitra Samareh Fekri, Seyed Mehdy Hashemi-Bajgani, Ahmad Shafahi, Rozita Zarshenas
BACKGROUND: Hemoptysis occurs due to either pulmonary diseases or bronchoscopy interventions. The aim of the present study was to compare the efficacy of the endobronchial instillation of adrenaline with that of tranexamic acid. METHODS: Fifty patients were randomly selected as 2 double-blinded sample groups (n=25). In these patients, bleeding could not be controlled with cold saline lavage during bronchoscopy and they, therefore, required prescription of another medicine...
March 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28286384/an-assessment-of-the-incidence-of-prolonged-postoperative-bleeding-after-dental-extraction-among-patients-on-uninterrupted-low-dose-aspirin-therapy-and-to-evaluate-the-need-to-stop-such-medication-prior-to-dental-extractions
#7
Brigit V Eapen, M F Baig, S Avinash
PURPOSE: To propose that low dose aspirin therapy need not be withdrawn for routine dental extraction procedure. AIM: This study was designed to evaluate the post operative bleeding in patients on low dose aspirin therapy by dividing them into two groups: one with withdrawing and the other without withdrawing the regime before dental extraction. MATERIALS AND METHODS: This study included 80 patients on low dose aspirin therapy. They were divided into two groups of 40 patients each; Group I (control group) included patients on who were asked to stop the medication 5 days prior to dental extraction; Group II (test group) included patients who were asked not to stop the medication prior to dental extraction...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28269228/leg-fluid-accumulation-during-prolonged-sitting
#8
Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi
The accumulation of fluid in the legs due to sedentariness can be a health risk in extreme cases. Negative health impacts associated with leg fluid accumulation include leg edema and risk of blood clots. Furthermore, fluid accumulating in the legs is accompanied by fluid shift into the upper body which is also associated with health risks such as: increased blood pressure when lying down, respiratory problems in people with heart failure, and increased sleep apnea. Understanding the pattern by which fluid accumulates in the legs can aid in the development of devices for reducing leg fluid accumulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227459/leg-fluid-accumulation-during-prolonged-sitting
#9
Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi, Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi, Daniel Vena, Azadeh Yadollahi, Jonathan Rubianto, Milos Popovic
The accumulation of fluid in the legs due to sedentariness can be a health risk in extreme cases. Negative health impacts associated with leg fluid accumulation include leg edema and risk of blood clots. Furthermore, fluid accumulating in the legs is accompanied by fluid shift into the upper body which is also associated with health risks such as: increased blood pressure when lying down, respiratory problems in people with heart failure, and increased sleep apnea. Understanding the pattern by which fluid accumulates in the legs can aid in the development of devices for reducing leg fluid accumulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28184956/-hemorrhagic-shock-general-principles
#10
T I Eiben, V Fuhrmann, B Saugel, S Kluge
Bleeding associated with hemorrhagic shock is often seen in emergency medical services or in the intensive care unit. Identifying the origin of the bleeding and additional disorders helps to determine the degree of the hemorrhagic shock. In order to be effective, the initial therapy until blood products are available needs to be differentiated to be effective in terms of hemodynamic stabilization and coagulation. Crystalloidal and colloidal solutions should be used carefully since those solutions bear a risk within themselves...
March 2017: Der Internist
https://www.readbyqxmd.com/read/28163378/low-temperature-plasma-equipment-applied-on-surgical-hemostasis-and-wound-healings
#11
REVIEW
Kenji Miyamoto, Sanae Ikehara, Hajime Sakakita, Yuzuru Ikehara
Low temperature plasma (LTP) coagulation equipment, which avoids causing burn injuries to patients, has been introducing into minimally invasive surgery. The mechanism by which this equipment stops bleeding is to directly occupy the injury with the formed blood clots, and different from the mechanism of the common electrical hemostatic devices that cauterize the tissues around the bleeding to stem the blood flow. A noteworthy point is that LTP treatment with our equipment is not confined only to the blood coagulation system, but it has significant effects on the other blood components to form clots with or without hemolysis, and that there is a plasma current threshold that determines whether the treatment makes stable clots...
January 2017: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/28126753/evaluation-of-collaterals-and-clot-burden-using-time-resolved-c-arm-conebeam-ct-angiography-in-the-angiography-suite-a-feasibility-study
#12
P Yang, K Niu, Y Wu, T Struffert, A Doerfler, P Holter, B Aagaard-Kienitz, C Strother, G-H Chen
BACKGROUND AND PURPOSE: The assessment of collaterals and clot burden in patients with acute ischemic stroke provides important information about treatment options and clinical outcome. Time-resolved C-arm conebeam CT angiography has the potential to provide accurate and reliable evaluations of collaterals and clot burden in the angiographic suite. Experience with this technique is extremely limited, and feasibility studies are needed to validate this technique. Our purpose was to present such a feasibility study...
January 26, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28078811/the-effects-of-nanomaterials-on-blood-coagulation-in-hemostasis-and-thrombosis
#13
REVIEW
Jan Simak, Silvia De Paoli
The blood coagulation balance in the organism is achieved by the interaction of the blood platelets (PLTs) with the plasma coagulation system (PCS) and the vascular endothelial cells. In healthy organism, these systems prevent thrombosis and, in events of vascular damage, enable blood clotting to stop bleeding. The dysregulation of hemostasis may cause serious thrombotic and/or hemorrhagic pathologies. Numerous engineered nanomaterials are being investigated for biomedical purposes and are unavoidably exposed to the blood...
January 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28074808/demonstration-of-blood-flow-by-color-doppler-in-the-femoral-artery-distal-to-arterial-cannula-during-peripheral-venoarterial-extracorporeal-membrane-oxygenation
#14
K G Suresh Rao, T Muralikrishna, K R Balakrishnan
In spite of distal perfusion of the limb using a cannula, the limb can have ischemic events if there is an undetected kink or clot anywhere in the line or thrombus in the artery. There are several ways to monitor and assess the limb ischemia. Monitoring for clinical signs of limb ischemia like temperature change and pallor is reliable and mandatory. We report a method where we used color Doppler to document the blood flow. Curvilinear vascular probe of an echo machine is used to identify the flow in the distal femoral artery of the lower limb...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28043990/low-dose-bivalirudin-anticoagulation-for-lung-transplantation-with-extracorporeal-membrane-oxygenation-in-a-patient-with-acute-heparin-induced-thrombocytopenia
#15
Andreas Koster, Jost Niedermeyer, Jan Gummert, Andre Renner
A patient scheduled for lung transplantation needed veno-venous extracorporeal membrane oxygenation (ECMO) and developed acute heparin-induced thrombocytopenia (HIT). After 21 days on ECMO support, lung transplantation was successfully performed using veno-arterial ECMO with bivalirudin anticoagulation. The target activating clotting time values of 160-180 s resulted in low bivalirudin infusion rates of 0.1 mg/kg/h. Diffuse bleeding stopped quickly after ending the continuous bivalirudin infusion.
May 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/27935296/graphene-montmorillonite-composite-sponge-for-safe-and-effective-hemostasis
#16
Guofeng Li, Kecheng Quan, Yuping Liang, Tianyi Li, Qipeng Yuan, Lei Tao, Qian Xie, Xing Wang
Montmorillonite (MMT) is considered to be the most effective hemostat among natural phyllosilicates. However, there is a barrier against using MMT for the commercial hemostatics because the invaded MMT powders might cause thrombosis in vessel. Until now, it is still a challenge to manage the release of MMT and eliminate its side effect. Herein, we present a graphene-MMT composite sponge (GMCS), synthesized under a hydrothermal reaction, fixing MMT powders into the cross-linked graphene sheets. We demonstrate that only a few embedded MMT can evoke remarkable platelet stimulation at the sponge interface, while maintaining fast plasma absorbency of the innate sponge...
December 28, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27888608/efficacy-and-safety-of-combined-intraventricular-fibrinolysis-with-lumbar-drainage-for-prevention-of-permanent-shunt-dependency-after-intracerebral-hemorrhage-with-severe-ventricular-involvement-a-randomized-trial-and-individual-patient-data-meta-analysis
#17
Dimitre Staykov, Joji B Kuramatsu, Jürgen Bardutzky, Bastian Volbers, Stefan T Gerner, Stephan P Kloska, Arnd Doerfler, Stefan Schwab, Hagen B Huttner
OBJECTIVE: Intraventricular hemorrhage (IVH) is a negative prognostic factor in intracerebral hemorrhage (ICH) and is associated with permanent shunt dependency in a substantial proportion of patients post-ICH. IVH treatment by intraventricular fibrinolysis (IVF) was recently linked to reduced mortality rates in the CLEAR III study and IVF represents a safe and effective strategy to hasten clot resolution that may reduce shunt rates. Additionally, promising results from observational studies reported reductions in shunt dependency for a combined treatment approach of IVF plus lumbar drains (LDs)...
January 2017: Annals of Neurology
https://www.readbyqxmd.com/read/27863131/conditions-of-microvessel-occlusion-for-blood-coagulation-in-flow
#18
A Bouchnita, T Galochkina, P Kurbatova, P Nony, V Volpert
Vessel occlusion is a perturbation of blood flow inside a blood vessel because of the fibrin clot formation. As a result, blood circulation in the vessel can be slowed down or even stopped. This can provoke the risk of cardiovascular events. In order to explore this phenomenon, we used a previously developed mathematical model of blood clotting to describe the concentrations of blood factors with a reaction-diffusion system of equations. The Navier-Stokes equations were used to model blood flow and we treated the clot as a porous medium...
November 10, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27823634/purification-and-characterization-of-novel-fibrin-ogen-olytic-protease-from-curcuma-aromatica-salisb-role-in-hemostasis
#19
B R Shivalingu, H K Vivek, B S Priya, K N Soujanya, S Nanjunda Swamy
BACKGROUND: The proteases from turmeric species have procoagulant and fibrinogenolytic activity. This provides a scientific basis for traditional use of turmeric to stop bleeding and promote wound healing processes. PURPOSE: Our previous studies revealed that fibrinogenolytic action of crude enzyme fraction of Curcuma aromatica Salisb., was found to be more influential than those of Curcuma longa L., Curcuma caesia Roxb., Curcuma amada Roxb. and Curcuma zedoria (Christm...
December 1, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27803814/is-anticoagulation-discontinuation-achievable-with-citrate-dialysate-during-hdf-sessions
#20
Thibault Dolley-Hitze, Emmanuel Oger, Didier Hamel, Marie-Laure Lombart, Isabelle Hermès
Citrate dialysate has been developed for few years to replace acetate and HCl concentrates. In Online Postdilution Hemodiafiltration (OL-POST-HDF), several issues are remaining concerning the possibility of stopping anticoagulation during sessions and the side effects of citrate solutions on calcium metabolism. This 1-year monocentric retrospective study included all patients exposed to citrate in OL-POST-HDF with nadroparin decrease for more than one month. Clotting events, serum calcium, PTH, hemoglobin, CRP, depuration parameters, and treatments administrated were recorded for analysis...
2016: International Journal of Nephrology
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