View clinical trials related to Reperfusion Injury.
Filter by:This study aims to understand the impact of time-of-the day on human myocardial tolerance to ischemia-reperfusion by exploring atrial myocardium biopsied during cardiac surgery. Patients scheduled for non-urgent cardiac surgery (coronary artery by-pas graft and/or aortic valve replacement) will be assigned to a morning or an afternoon cardiac surgery based on randomization. Myocardial biopsies will be explored in ex vivo conditions mimicking ischemia-reperfusion.
This study will evaluate the benefit of Intralipid® or placebo administered prior to reperfusion to limit ischemia reperfusion injury as measured by the geometric mean difference of the release of troponin I over 72 hours after coronary artery bypass.
Laparoscopic surgery has played a pivotal role in all surgical fields in modern medicine. It has some well known advantages over open surgery. For this reason laparoscopic surgery is know the first choice for many surgical procedures, even in gynecology. On the other hand, despite the advantages of laparoscopy carbon dioxide (CO2) pneumoperitoneum is not free from side effects. Experimental studies and limited clinical studies showed that pneumoperitoneum leads to a decrease in the blood flow to intra-abdominal organs during laparoscopic surgery. This is also known as ischemia, leads to the production of free O2 radicals. The desufflation of the abdominal cavity at the end of the procedure reduces the increased abdominal pressure and increase the perfusion of intra-abdominal organs. However this will not stop the production of free radicals. This reperfusion period even exaggerate the release of free radicals. This phenomenon is called as ischemia/reperfusion (I/R) model that leads to release of various free radicals, which are the most important mediators of oxidative tissue injury and consequential organ dysfunction. Recently both oxidative tissue injury and consequential dysfunction have been shown in ovarian tissue in experimental animal studies. But the data related to human ovary is still scarce. Thus the aim of the study is to evaluate the effect of I/R injury related to CO2 pneumoperitoneum on human ovary.
This trial is a 2 x 2 factorial design, double-blinded, randomized controlled trial to evaluate efficacy and safety of remote ischemic preconditioning and postconditioning for prevention of contrast-induced acute kidney injury in patient undergoing coronary angiography and angioplasty
The purpose of this study is to evaluate whether perioperative use of Shenfu Injection could reduce myocardial injury (enzymatic infarct size and infarct volume according to cardiac magnetic resonance imaging) in patients with STEMI after primary PCI
This trial is a 2 x 2 factorial design, double-blinded, randomized controlled trial to evaluate efficacy and safety of remote ischemic preconditioning and postconditioning in patient undergoing coronary angioplasty.
Ischemia reperfusion injury causes the release of free oxygen radicals. The selective alpha2-receptor agonist, dexmedetomidine, has an inhibitory effect on inflammatory responses during ischemic injury. The aim of this study is to evaluate the effect of dexmedetomidine on inflammatory responses during ischemia-reperfusion injury in skeletal muscle.
Myocardial injury occurs after percutaneous coronary intervention due to micro emboli, ischemia-reperfusion injury or side branch occlusion. 3 cycles of ischemic preconditioning has been shown to be useful in preventing myocardial injury but it is not suitable to perform it especially in ad hoc interventions. In this study the investigators aim is to show whether one cycle remote ischemic preconditioning will be enough to prevent myocardial injury during percutaneous coronary intervention.
The purpose of this study is to investigate local activation of the coagulation system in the kidney graft during organ preservation and during early reperfusion in adult kidney transplantation. Generation of thrombin and fibrin as well as activation and inhibition of fibrinolysis will be investigated. Influence of these events on delayed graft function (DGF) and acute cell-mediated rejection will be evaluated.
The investigators tested the impact of purging the graft contents and mesenteric blood into the systemic circulation versus washing out this volume out of the circulation in living donor liver transplantation recipients.