Active clinical trials for "Postoperative Hemorrhage"

This study evaluates the incidence of postoperative bleeding after oral surgical procedures in patients taking direct oral anticoagulants and in patients taking vitamin K antagonists.

Blood is anticoagulated using a drug named heparin during open-heart surgery to allow it to safely pass through the heart-lung machine which pumps the blood throughout the body during the surgery. Each patient is given the heparin they need for their surgery. This means some patients receive more or less heparin than other patients. In this study, the investigators will be evaluating the current anticoagulation protocol for open heart surgery in use at the Royal University Hospital. The goal of this project is to compare patients who require and receive more heparin for proper anticoagulation to those patients who require and receive less heparin. Open-heart surgery will proceed according to the standard hospital protocol. All research participants will be treated according to standard post-open heart surgery protocol in the ICU. This will include measurement of blood loss by keeping track of chest tube outputs and administration of blood transfusions. This study focuses on Saskatoon Health Region patients having open heart surgery in terms of the protocol for anticoagulation and blood transfusions.

This study evaluates the hemostatic changes defined as hemostasis reserve capacity (HRC) in the first perioperative 48 hours of bloodless liver transplanted patients.

Demonstrate the effectiveness to Hemopatch in controlling postoperative bleeding or reducing of postperative fluid collection after laparoscopic cholecistectomy, morbidity and postoperative hospital stay.

Up to 15% of operations in cardio-pulmonary by-pass are complicated by excessive postoperative blood loss, which negatively affects the outcomes. Recently, it has been demonstrated that fibrin clot susceptibility to lysis is a modulator of postoperative blood loss after cardiac surgery for aortic stenosis. Earlier, a preliminary study showed a negative association of postoperative blood loss after coronary artery by-pass grafting (CABG) with fibrin clot lysis time, reflecting susceptibility to fibrinolysis. In CABG, postoperative blood loss may depend on the operative technique with respect to left internal mammary artery (LIMA) harvesting. LIMA is taken down in virtually all CABG procedures, but harvesting technical details remain at surgeons discretion (skeletonization without opening the pleural cavity vs. pedicled graft with pleura wide open). The investigators decided to test the hypothesis that fibrin clot properties modulate the postoperative drainage following CABG strongly enough to attenuate the influence of surgical technique by randomizing the patients undergoing CABG with regard to LIMA harvesting technique.

Activated clotting times (ACT) is employed most commonly to assess anticoagulation and ensure adequate heparin and protamine dosing during cardiopulmonary bypass (CPB). However, many studies have demonstrated a lack of correlation between plasma heparin levels and ACT during CPB. HMS Plus device estimate the free plasma heparin level from a whole-blood sample and also include the dose of protamine necessary to neutralize the circulating heparin at the end of CPB. It could predict a higher heparin dose and lower protamine dose but it's interest on postoperative bleeding and perioperative transfusion is unclear.

To find noninferiority relationship between oral and intravenous administration of tranexamic acid on peroperative and postoperative blood loss and serum concentration during primary total hip arthroplasty.

Aims Aspirin combined with clopidogrel is the treatment of choice for acute coronary syndromes. Although the maintenance of aspirin until surgery does not affect postoperative bleeding after coronary artery bypass graft (CABG) surgery, the latter may be dramatically increased when clopidogrel is continued over a period of 5 days preoperatively. Methods and results: This prospective observational study will include 136 consecutive patients scheduled for first-time CABG. Postoperative bleeding and blood transfusion requirements will be compared (non inferiority)between patients pretreated during a period of 5 days prior surgery by either aspirin alone or combined with clopidogrel. Tranexamic acid will be systematically used in all these patients considered as high risk for bleeding. In concusion, this study has to to test the hypothesis that with tranexamic acid also, bleeding in the aspirin + clopidogrel group is not 25% more important than in the aspirin alone group after CABG surgery, according to the previous study using aprotinin.

Intravenous Tranexamic Acid Versus Pericervical Tourniquet To Decrease Blood Loss In Trans-Abdominal Myomectomy

This study will investigate how chest temperature relates to blood loss and blood clotting. Researchers will use infra-red thermometers to measure the temperature of the chest at the end of surgery see if this relates to the amount of blood collected from the surgical drains. In addition, researchers will test if warm irrigation of the chest increases the temperature of the chest and if this impacts blood loss.