Endothelial Dysfunction Clinical Trials

This observational study will evaluate the effect of puberty suppression on insulin sensitivity, metabolic rate and vascular health among transgender female youth at baseline and 6 months after initiation of a gondoatropin releasing hormone agonist compared to matched cisgender male controls. Read Less

This study is an ancillary (add-on) study to the clinical trial entitled "Effect of Nitric Oxide in Cardiac Surgery Patients With Endothelial Dysfunction", which has Clinical Trials.gov identifier NCT02836899. NCT02836899 trial randomizes cardiac surgical patients to receive either Nitric Oxide (NO) or a placebo during and after cardiac surgery. This ancillary study aims to assess the effects of Nitric Oxide on plasma reduction-oxidation reactions of patients undergoing cardiac surgery requiring prolonged cardiopulmonary bypass. Read Less

This study is an ancillary (add-on) study to the clinical trial entitled "Effect of Nitric Oxide in Cardiac Surgery Patients With Endothelial Dysfunction", which has Clinical Trials.gov identifier NCT02836899. NCT02836899 trial randomizes cardiac surgical patients to receive either Nitric Oxide (NO) or a placebo during and after cardiac surgery. This ancillary study aims to assess the effects of Nitric Oxide on vascular responsiveness and on endothelial function during hemolysis in patients with pre-operative endothelial dysfunction undergoing cardiac surgery requiring prolonged cardiopulmonary bypass. Read Less

Elucidate the influence of intense light therapy pretreatment in patients undergoing cardiac surgery. We hypothesize that intense light exposure is associated with the peripheral stabilization of Per2 in human buccal swabs and plasma samples before surgery and with a decrease of Troponin I levels after surgery. In addition, we hypothesize that light therapy leads to Per2 dependent metabolic optimization in the human cardiac tissue. Therefore, a small piece of human heart tissue from the right atrium will be collected during cardiac cannulation, which will be otherwise discarded. Critical illness (being in the intensive care unit) results in circadian malfunction and vessels not working. Vessel function is controlled by the body's circadian clock. Intense light boosts the circadian clock and the vessel function in animal studies. Vessels not working well in critical ill patients results in a myriad of severe diseases (delirium, stroke, heart attack, organ damage etc). Thus we will test if intense light can be used to boost the circadian clock and the associated vessel function in critical ill patients. Read Less

This study will examine the impact of cardiac rehabilitation on blood vessel health using a newly developed microfluidic-based tactile sensor to assess blood vessel health. The participants will have their blood vessel health measured using a sensor that is placed on top of the skin over the artery before and after exercise (1, 3, 5, 10, 30 and 60 mins). The investigators will study these responses at the first session of cardiac rehabilitation and following 1 and 4 weeks of cardiac rehabilitation (sessions 3 and 6). The investigators will also collect some information from the medical record regarding: age, gender, body mass index, resting cardiovascular measures (heart rate, blood pressure etc), medications, reasons which qualified the participant into cardiac rehabilitation, blood tests related to heart or cardiovascular function, metabolic panel, lipid panel, echocardiogram results, recorded electrocardiogram, known vascular diseases, presence of implantable devices, Seattle Heart Failure Model data and cardiovascular measures and exercise workloads during cardiac rehabilitation. Read Less