search

Active clinical trials for "Reperfusion Injury"

Results 121-130 of 245

Nitric Oxide-mediated Cardioprotection During Cardiac Surgery With Cardiopulmonary Bypass

Coronary Artery DiseaseCoronary Artery Bypass4 more

This prospective randomized study elucidates the effects of exogenous nitric oxide delivered to the extracorporeal circulation circuit for cardioprotection against ischemia-reperfusion injury during coronary artery bypass graft surgery with cardiopulmonary bypass.

Completed2 enrollment criteria

Effect of Pneumoperitoneum on Human Ovary

Reperfusion Injury

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.

Completed8 enrollment criteria

Effect of Dexmedetomidine on Ischemia-Reperfusion Injury in Lower Extremity Operations

ArthroplastyReplacement

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.

Completed2 enrollment criteria

Pediatric Remote Ischemic Pre-conditioning Prior to Complex Cardiac Surgery

Congenital Heart DiseaseIschemia-reperfusion Injury

In 2012, infants having surgery for congenital heart disease have a high survival. The investigators are now focused on improving how sick these infants become after surgery (short term outcomes) and their later neurodevelopment (long term outcomes). During heart surgery, cardiopulmonary bypass (CPB; the heart-lung machine) takes over heart function while the surgeon repairs the heart disease. During this surgery there are periods of time when the amount of blood going to the heart and brain is lower than usual, called "ischemia". Once the surgery is finished the blood going to the heart and brain is increased to normal again, called "reperfusion". This ischemia-reperfusion can cause injury to the heart, brain, and other organs, affecting the short and long term outcomes in these infants. Adult studies have shown that a short time of ischemia to the legs for 5-10 minutes [the legs are not damaged by a short time of ischemia, unlike the heart or brain], before severe ischemia to another distant vulnerable vital organ [like the heart or brain], can protect this other vital organ from ischemia-reperfusion injury. This is called "remote ischemic preconditioning" (RIPC). Our objective is to test whether RIPC before heart surgery can improve the recovery of the heart and brain after heart surgery in newborn babies with congenital heart disease. The investigators will test whether RIPC will result in lower peak lactate and troponin levels on the day after heart surgery. Lactate levels are a marker for how much the different tissues of the body suffer from ischemia-reperfusion injury. Troponin is released from damaged heart during ischemia-reperfusion. In our trial infants will be randomized to RIPC or control. This means each baby has an equal chance of being in one group or the other. The intervention group will have RIPC before surgery; the "control group" will not. The investigators hope this trial will lead to a larger study to test if RIPC results in fewer days on a breathing machine after surgery, lower mortality, and higher scores on neurodevelopmental tests at 2 years of age.

Completed7 enrollment criteria

Evaluation of Preimplantation Portal Vein and Hepatic Artery Flushing With Tacrolimus

Early Allograft DysfunctionIschemic Reperfusion Injury2 more

The purpose of this study is to determine whether the Tacrolimus added to histidine-tryptophan-ketoglutarate (HTK) solution given through intraportal and intraarterial infusion during back-table procedure is capable of reducing the degree of early allograft liver dysfunction, as assessed by postoperative levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), during first 7 postoperative days and by serum and histochemical markers of liver injury and inflammation.

Completed7 enrollment criteria

Study of High Dose Vitamin C On Outcome in Cardiac Surgery Patients

Reperfusion Injury

It has been shown that the stress that occurs during cardiac surgery leads to early decrease of many of the body's resources such as Vitamin C (ascorbic acid) which may contribute to complications after surgery. This study will investigate the effects of high doses of intravenous (IV) Vitamin C on the outcome and complications after cardiac surgery.

Completed2 enrollment criteria

Induction of HO-1; a Therapeutic Approach to Reduce Ischaemia Reperfusion Injury (IRI) Following...

Graft FailureIschemia-reperfusion Injury

This is a blinded, placebo-controlled, randomised controlled trial looking at the effects of Heme arginate (HA) on cadaveric renal transplantation. The investigators know that HA can upregulate HO-1, which has been shown to have a protective effect on animal transplants. The investigators will be giving HA/placebo to participants prior to transplant and repeat again on day 2 post-transplant and compare outcomes.

Completed8 enrollment criteria

Role of Volatile Anesthetics for Hepatic Protection

Reperfusion Injury

This study aims to evaluate the attenuation of ischemic-reperfusion injury in the liver after sevoflurane preconditioning. In the presence of sevoflurane, an attenuation of liver injury is hypothesized (diminished increase of liver enzymes, reduced production of inflammatory mediators).

Completed4 enrollment criteria

Repertaxin in Prevention of Primary Graft Dysfunction After Lung Transplantation

Ischemia-Reperfusion InjuryLung Transplantation

The chemokine CXCL8 plays a key role in the recruitment and activation of polymorphonuclear neutrophils in post-ischemia reperfusion injury after solid organ transplantation. Repertaxin is a novel, specific inhibitor of CXCL8. This study is configured to explore the safety and efficacy of repertaxin in preventing the primary graft dysfunction (PGD) after lung transplantation.

Completed19 enrollment criteria

Reparixin in Prevention of Delayed Graft Function After Kidney Transplantation

Ischemia-Reperfusion InjuryKidney Diseases

The chemokine CXCL8 plays a key role in the recruitment and activation of polymorphonuclear neutrophils in post-ischemia reperfusion injury after solid organ transplantation. Reparixin is a novel, specific inhibitor of CXCL8. This study is configured to explore the safety and efficacy of reparixin in preventing the delayed graft function (DGF) after kidney transplantation.

Completed19 enrollment criteria
1...121314...25

Need Help? Contact our team!


We'll reach out to this number within 24 hrs