View clinical trials related to Blood Loss, Surgical.
Filter by:Most osteotomies and apicoectomies in periapical surgeries are performed by surgical carbide or diamond burs. But greater pressure is applied during cutting which causes more thermal and mechanical damage to the bone. Also, when it comes in contact with soft tissues like nerves or vessels it results in profuse bleeding which affects vision in surgery and neurosensory disturbance at a later stage along with the deposition of metal shavings and bony particles resulting in impaired healing. The main advantages of piezoelectric surgery in various studies are highlighted as selective hard tissue cutting and sparing soft tissue, so even if it comes in contact with vessels, nerve or Schneiderian membrane it does not result in profuse bleeding, postoperative nerve damage or perforation.
Fibroids are the most commonly encountered tumors in the female reproductive system. In patients, fibroids most often lead to abnormal uterine bleeding and the resulting anemia. In some cases, they can cause infertility or habitual abortions. Another complaint caused by fibroids is pain due to pressure and effects on adjacent organs. Very large fibroids can lead to abdominal swelling. Therefore, if a patient becomes symptomatic due to fibroids, myomectomy or, if necessary, hysterectomy is required. Because fibroids have a significant blood supply, there is a high risk of intraoperative bleeding and related complications. Additionally, the most common complication in these patients after the operation is bleeding. In many of these patients, intraoperative or postoperative blood transfusions are performed. If bleeding cannot be intervened early in these patients, hemodynamic instability, shock, coagulopathy, and, in the final stage, death can occur due to hemorrhage. Therefore, both intraoperative and postoperative bleeding control is of vital importance in patients undergoing myomectomy.
This trial is a phase III multicentre blinded randomised controlled clinical non-inferiority trial of cryopreserved platelets vs. conventional liquid-stored platelets for the management of surgical bleeding. The aim of the study is to assess the efficacy, safety and cost effectiveness of cryopreserved platelets, compared to conventional liquid-stored platelets, for the management of surgical bleeding. This trial will recruit cardiac surgical patients deemed to be at high risk of surgical bleeding and who may potentially require transfusion of platelets. It is estimated to require 808 high-risk cardiac surgical patients to be recruited, to obtain 202 patients who receive transfused study platelets for surgical bleeding.
Major liver resection is associated with substantial intraoperative blood loss and subsequently blood transfusions. Blood transfusion in elective liver surgery is a significant factor of perioperative morbidity and mortality, as well as possibly long-term oncologic outcome. The purpose of this study is to use whole blood phlebotomy to decrease the central venous pressure, resulting in a state of relative hypovolemia. It is hypothesized that this intervention will lead to a decrease in blood loss at the time of liver resection and thus reduced blood transfusion in major liver surgeries.
Comparative study on efficacy of haemostatic therapy guided either by standard laboratory coagulation parameters or point-of-care testing in patients undergoing vascular surgical procedures. We investigate the amount of perioperative bleeding and the number of blood product used. Inclusion criteria Patients scheduled for elective and acute open aorta surgery or undergoing acute aorta surgery with minimally invasive techniques and were provided treatment in the operating theatre and/or ICU attached to perioperative care, they must be at least 18 years of age and written informed consent was obtained from the patient or his/her legal representative. Randomisation technique Patients will be randomly assigned to each of two treatment groups using sealed envelopes. In group 1 (G1) haemostasis strategy guided by conventional coagulation tests, while in group 2 (G2) transfusion algorithms guided by point-of-care (POC) tests will be carried out. Sampling techniques and measurements For assessment of monitored parameters shall be used arterial or venous blood depending on the catheter placed preoperatively. In case of the above mentioned vascular surgical procedures, all patients will receive arterial cannula routinely, and, depending on the extension of procedure, as appropriate, a central venous catheter will be inserted as well. Sampling in the patient groups shall be performed as follows: - pre- and postoperative evaluation of standard laboratory parameters in all patients - evaluation of standard laboratory parameters and arterial Astrup test during and after surgery in group 1, if the blood loss volume reaches 1,5 ml/kg/minute during 20 minutes - in case of elective surgery: thromboelastometry and arterial Astrup test during and after surgery in group 2 if the blood loss volume reaches 1,5 ml/kg/minute during 20 minutes - in case of acute surgery: thromboelastometry and arterial Astrup test before, during and after surgery in group 2 - in case of positive anamnesis, preoperative platelet aggregation test in both groups Besides the above samplings, routine lab tests (blood gas, blood count, sodium (Na), potassium (K), parameters of renal and liver function, clotting and inflammation, lactic acid, blood sugar) will be performed every day as usual during intensive therapy.
The purpose of this research is to determine if the oral form of a medication (tranexamic acid) to reduce bleeding can be used in place of an intravenous (IV) form, to learn the best way to give tranexamic acid: either a pill by mouth, or a solution by vein.
Objective: - To evaluate the efficacy of preoperative administration of fibrinogen in liver transplantation by maintaining a preoperative plasma level equal to 2.9 g / L compared with placebo, reflecting a reduction in the number of RBC units transfused during the procedure. - To determine the influence of fibrinogen administration on mortality and survival of liver graft evaluated one year after the procedure. - To determine the safety of fibrinogen administration recording thrombotic complications evaluated during hospitalization or at least 30 days postoperatively.