View clinical trials related to Coagulation.
Filter by:Recurrent spontaneous abortion (RSA) is a common pregnancy complication in women of reproductive age and the cause of RSA remains largely unclear. Acupuncture is widely used in clinical practice to treat infertility and abortion. The role of acupuncture in the treatment of infertility is still unclear. The investigators conducted a randomized, prospective, controlled clinical trial to investigate its potential impact on pregnancy outcome. Herein, the investigators not only evaluated the changes in patients' psychological stress before and after treatment but also followed up on pregnancy outcomes. In addition, changes in uterine artery blood flow were observed by ultrasound. Changes in coagulation-related indicators were also detected.
Twenty stable chronic hemodialysis patients are included and will undergo one, two, three or four midweek test dialysis sessions, depending on a flow chart to follow. All patients are started (week 1) with an anticoagulant Clexane 50IE/kg and are dialyzed with their regular dialyzer and dialysis machine. Depending on the results of measured clotting characteristics and of the dialyzer scanning (i.e. percentage open fibers), it is decided (via the flow chart) whether the patient gets a second session (and so on) with an adapted anticoagulation therapy to ameliorate fiber patency while limiting bleedings.
To avoid clotting during extracorporeal treatment, an anticoagulant is added to the circuit, resulting in an increased risk for bleeding complications. In addition, there is evidence that a substantial number of fibers can become blocked before this is reflected in routinely observed parameters, or in termination of the dialysis session. In standard hemodialysis of 4 hours, the anticoagulant is administered at the beginning of dialysis. For nocturnal hemodialysis, there is no hard evidence whether anticoagulation should be administered only at the dialysis start or with an extra dosing halfway the dialysis session. The aim of this randomized cross-over study is to objectively quantify the number of patent fibers after nocturnal dialysis in two different settings: anticoagulation only at the dialysis start, and anticoagulation divided over two time points, i.e. dialysis start and halfway dialysis.
The purpose of this study was to develop parameters and assess the safety of the radiofrequency device for a variety of treatments. Treatment results were also evaluated.
Coagulation within the dialyzer membrane fibres is an obvious biological sign of bio-incompatibility. To avoid clotting during extracorporeal treatment, an anticoagulant is added to the circuit, resulting in an increased risk for bleeding complications. In addition, there is evidence that a substantial number of fibers can become blocked before this is reflected in routinely observed parameters, or in termination of the dialysis session. Little is known about the impact of such subclinical clotting on dialyzer performance in terms of solute clearance. Membrane clogging may influence both the diffusive and convective transport characteristics of the dialyzer membrane before leading to complete dialyzer clotting. In 2018, we described a method to objectively count the number of blocked fibres inside a dialyzer using a micro-CT scanning technique. In the present trial, we use this method to assess the number of open fibers post dialysis, and this for three different dialysis durations and in two different dialyzer types. Just before the termination of the dialysis session, dialyzer clearance is assessed for different solutes from concentration measurements in blood samples as taken from the dialyzer inlet and outlet line. The aim of this randomized cross-over study is to objectively quantify the impact of blocked fibers on the performance of different dialyzer membranes: ATA™ (asymmetric triacetate) membrane in the Solacea™ dialyzer, and polysulfone membrane in the FX800Cordiax dialyzer, and this with a decreased anticoagulation dose.
The understanding of haemostasis and inflammation cross-talk has gained considerable knowledge during the past decade in the field of arterial and venous thrombosis. Complex and delicately balanced interaction between coagulation and inflammation involve all cellular and humoral components. Elements of the coagulation system such as activated thrombin, fibrinogen or factor Xa may increase inflammation by promoting the production of pro-inflammatory cytokines, chemokines, growth factors and adhesion molecules that lead to a procoagulant state amplifying the pathological process. Recent evidence supports inflammation as a common pathogenic contributor to both arterial and venous thrombosis, giving rise to the concept of inflammation-induced thrombosis. Patients with infection of COVID-19 and severe pneumoniae seem to have higher risk of thromboembolism. Very few data are available regarding the biological disorders of coagulation in these patients. Th purpose of this project is to analyze hemostasis and coagulation of patients with infection of COVID-19 and severe pneumonia.
Coagulation within the dialyzer membrane fibres is an obvious biological sign of bio-incompatibility. To avoid clotting during extracorporeal treatment, an anticoagulant is added to the circuit, resulting in an increased risk for bleeding complications. In addition, there is evidence that a substantial number of fibers can become blocked before this is reflected in routinely observed parameters, or in termination of the dialysis session. Little is known about the impact of such subclinical clotting on dialyzer performance in terms of solute clearance. Membrane clogging due to deposition of proteins and red blood cells on the dialysis membrane may influence both the diffusive and convective transport characteristics of the dialyzer membrane before leading to complete dialyzer clotting. In 2018, the invesitgators described a method to objectively count the number of blocked fibres inside a dialyzer using a micro-CT scanning technique. In the present trial, the investigators use this method to assess the resistance of the dialyzer to clotting, and to evaluate the impact of subclinical fibre blocking on solute removal and thus performance of a dialyzer during a dialysis session. The aim of this randomized cross-over study is to objectively quantify the performance of different dialyzer membranes: ATA™ membrane in the Solacea™ dialyzer, polysulfone membrane in the FX800 dialyzer, and the heparin-coated AN membrane in the Evodial dialyzer, and this with different anticoagulation strategies.
A randomized study is to learn more about how a supplement called DHEA (dehydroepiandrosterone) affects clotting factors in women taking combined oral contraceptive pills. Current research suggests that the progestin hormone in a specific type of birth control pill may increase a woman's blood clot risk. However, it is unknown exactly how the progestin causes the increased risk. This study aims to learn if taking a daily dose of supplemental androgen (dehydroepiandrosterone, or DHEA) in addition to birth control pills containing DRSP affects proteins related to coagulation.
This study aims to evaluate whether dietary supplementation with fish oil can protect against the cardiopulmonary alterations linked to air pollution
This study will establish reference range intervals for the Quantra System, a next-generation diagnostic platform that provides whole blood coagulation testing at the point-of-care.