View clinical trials related to Cardiovascular Diseases.
Filter by:This is a clinical trial to determine whether 30 sessions of heat therapy in the form of hot water immersion is better than 30 sessions of traditional aerobic exercise training on blood pressure reduction in people with elevated or Stage 1 hypertension.
Recent developments in chemotherapy, particularly VEGF-inhibitor (VEGFI) drugs, have markedly improved the prognosis of patients with cancer. However, these drugs frequently cause high blood pressure (hypertension) which can lead to heart attacks, heart failure and stroke and can limit their use for cancer treatment. Endothelin-1 is a hormone that causes blood vessels to tighten and may contribute to high blood pressure associated with VEGFI drugs. Blocking the effects of endothelin-1 may therefore reduce or prevent VEGFI-associated blood pressure changes, although this has never been tested in humans. Our long-term goal is to assess the protective effects of endothelin-1 blocker drugs in patients treated with VEGFI. Before doing so, we must better explore whether VEGFIs cause blood vessel narrowing and if endothelin-1 blockers prevent this. We will assess this in healthy volunteers using a special technique called 'forearm plethysmography'. We will examine the effect of VEGFI on blood flow and also the effect of simultaneous administration of endothelin-1 blockers. These will be given at doses that produce local effects in the arm without affecting the rest of the body. These studies study will show whether endothelin-1 blockers may help treat VEGFI-associated hypertension to enable more patients safely to receive vital cancer treatments.
incidence is increasing1,2. Whilst the prognosis is very good with the vast majority of patients cured with orchidectomy alone, those with high risk stage one non seminomatous germ cell cancer (NSCGT) or metastatic disease (NSCGT or seminoma) are treated by surgery followed by chemotherapy. Platinum based chemotherapy is associated with long-term cardiovascular sequelae. Endothelial dysfunction is a key component of early atherogenesis and the later stages of obstructive atherosclerosis, plaque rupture and thrombus formation. Whilst endothelial toxic effects of BEP chemotherapy appear to be central in the pathophysiology of associated complications, abnormalities in endothelial function as assessed by measures of brachial artery flow-mediated dilatation (FMD) have not demonstrated a consistent effect over time. When assessed within ten weeks of platinum-based chemotherapy9, no change in FMD was observed whilst marked decreases are seen immediately following treatment11 and also one year following treatment12. Therefore, the time-course of endothelial vasomotor impairment remains incompletely defined in a single prospective cohort.
Chemotherapy drugs improve cancer survival but increase the risk of cardiovascular disease (CVD). VEGF inhibitors (VEGFI) cause severe hypertension, while cisplatin appears pro-thrombotic. Hence while cancer survival may improve, this is at the risk of potentially severe CVD and associated morbidity. Mechanisms underlying the cardiovascular toxicities of VEGFI and cisplatin are unknown, but effects on vascular function may be important. The INTELLECT study will phenotype the endothelial effects of VEGFI and cisplatin using a variety of methods.
This project aims to improve the cardiovascular health of seniors living in subsidized housing by implementing the successful community-based Cardiovascular Health Awareness Program (CHAP). CHAP is a patient-centred, interdisciplinary, multi-pronged, community-led CVD and stroke prevention and management program designed to prevent and reduce the impact of cardiovascular disease in older adults. The program addresses common cardiovascular disease risk factors, such as smoking, physical activity and poor diet by raising awareness of health and community resources available to encourage self-care and appropriate management of cardiovascular disease. A randomized controlled trial will be used to evaluate the impact of CHAP on healthcare utilization by older adults living in subsidized housing.
Health authorities recommend a reduction in added sugars from sugar-sweetened beverages (SSBs) due to risk of obesity and diabetes. As a sugar-reduction strategy, finding the ideal SSB replacement is of the utmost importance. Those who are already consuming SSBs might not easily replace it with water and therefore non-nutritive sweetened beverages (NSBs) present a sweetened alternative, though guidelines recommend water instead of NSBs as a replacement for SSBs. Recent evidence suggests that saccharine, a non-nutritive sweetener, which is not found in NSBs, might induce glucose intolerance by altering gut microbiota in humans. It is currently not known if replacing SSBs with NSBs (which contain low-calorie sweeteners other than saccharine) or water will have any effect on the human gut microbiota and any downstream diabetic risk. The investigators plan to undertake a randomized controlled cross-over trial in 75 healthy adults to assess the effect of replacing SSBs with equal amounts of NSBs or water for 4 weeks on the composition and diversity of human gut microbiota, changes in glucose tolerance and total body fat in those who regularly drink SSBs. Each participant will act as their own control receiving each of the three interventions of SSB, NSB and water for four weeks in random order, each period separated by a four-week wash-out period. All study visits will occur at the Clinical Nutrition and Risk Factor Modification Centre at St. Michael's Hospital. This study will contribute to knowledge that will inform dietary guidelines and public policy with regards to the best possible replacement for SSBs. It will also shed light on the potential mechanism of the adverse effects of NSBs and if the replacement of SSBs by NSBs or water are in fact similar with respect to their effect on gut bacteria and any downstream diabetic risk.
This purpose of this study is to assess the impact of consuming wolfberry on cardiovascular risk in Singapore's middle-aged and older adults. The investigators hypothesize that consuming wolfberry with a healthy eating pattern diet will contribute to improvements in cardiovascular health when compared to a similar diet without wolfberry.
Cardiovascular disease (CVD) remains the major cause of mortality globally. Applying a comprehensive interventional program based on the individual's risk may reduce the incidence and complications of CVD; thus, helping to decrease the burden on the healthcare system. This study compared the effects of a 3-month intervention involving lifestyle modification and physical activity with standard care in women ≥30 years having a moderate-to-high risk of CVD, with respect to improving physical activity and cardiovascular disease risk factors at the National Guard Residential City in Jeddah, Saudi Arabia, in 2015. The effects of this community-based lifestyle program were assessed through a randomized controlled trial. Women in the intervention group (n=31) received health education, exercise training, and diet counselling as individuals and in groups according to the participant's risk. Women in the control group (n=28) received one health education session at the screening site. The Framingham risk score (FRS) was calculated at baseline and at 3 months for both groups. The mean participant age was 42±8 years.
The PRODOSE trial is investigating a bespoke pharmacokinetic algorithm that calculates a tailored dose of protamine, required after cardiopulmonary bypass to reverse the action of heparin, based on individual patients and their actual bypass time. The PRODOSE trial aims to demonstrate that the algorithm can be used to define a protamine dose that will more reliably return coagulation parameters to pre-heparin levels as well as decreasing the risk of post-operative bleeding and transfusion. The trial aims to recruit 200 patients who will be randomised to either a bespoke or standard dose of protamine. The randomisation ratio will be 1:1 in the first instance but the trial uses an adaptive design and an interim analysis will be conducted after 100 patients have been randomised. The randomisation ratio could then be updated after the interim analysis to favour a superior arm whilst preserving statistical power levels.
The purpose of this study is to better understand the association between the postprandial biomarker responses after a food challenge with the development of cardiovascular diseases in healthy subjects