Active clinical trials for "Heart and Blood Diseases"

Following the high feasibility of analyses by core laboratory with videodensitometry determined in the ASSESS-REGURGE Registry, this is an early clinical feasibility study of online videodensitometric assessment of aortograms to quantitate aortic regurgitation (AR) in the cath lab, specifically in the setting of transcatheter aortic valve replacement (TAVR)

Precise identification of the infarct scar is essential for successful catheter ablation of ventricular arrhythmias in patients with chronic myocardial infarction. Voltage mapping of endocardial electrograms is currently used to delineate the necrotic scar but this is influenced by the direction of the activation wave front and is not sensitive enough to differentiate distinct degrees of transmural injury in the scar. Mapping of local myocardial electrical impedance may overcome these limitations.

The aim of the study is to monitor if specialized stroke nurses as team partners in the ED can reduce hospital acquired infections. The study is designed as pre- post-intervention study in which specialized SU nurses partner with ED nursing staff to asses and screen stroke admissions in the ED.

Rationale: Over 20.000 people suffer an ischemic stroke in the Netherlands each year. Large artery occlusions are easy to identify and can be treated with endovascular clot removal. 70% of patient will however suffer from a more distal occlusion resulting in small volume stroke or a transient ischemic attack (TIA). Small ischemic lesions are hard to detect with current acute stroke protocols. TIA and small volume stroke patients, are at an increased risk for recurrent stroke, making immediate diagnosis critical. Because thrombo-embolic sources often cause these strokes, identifying and treating the underlying aetiology has the potential to radically lower the risk of recurrence and improve the outcome of these patients. Objectives: 1) To identify clinical and imaging predictors of recurrent stroke; 2) To improve early detection of small volume stroke with admission computed tomography perfusion (CTP) in patients with suspected acute ischemic stroke with small volume stroke or no ischemia on admission imaging. Study design: Prospective, multicenter cohort study. Study population: All patients who visited the University Medical Center (UMC) Utrecht, the Amsterdam University Medical Centers (Amsterdam UMC), location Academic Medical Center (AMC) or the St. Antonius Hospital and who underwent a CT-scan of the brain within 9 hours after onset of stroke symptoms with an age ≥18 years. Within 36 months, 720 patients will be enrolled in the study. Of these patients, 300 patients will be included for the follow-up magnetic resonance imaging (MRI). Main study parameters/endpoints: The main study endpoints are: 1) Stroke recurrence rate at 2 years; 2) Presence and volume of acute ischemic lesions on follow-up diffusion weighted imaging MRI.

This study investigates diagnostic performance of a ring-type wearable device for detecting atrial fibrillation. This is a prospective cohort registry study began after the date of IRB approval and until 31th Dec. 2023. The eligible criteria are (1) those who admitted the institution for elective direct-current cardioversion or catheter ablation of persistent atrial fibrillation, (2) those who were successfully converted to sinus rhythm after the intervention, and (3) aged 19 years or more. The exclusion criteria are (1) those aged less than 19 years, (2) those who are not converted to sinus rhythm after the intervention, and (3) those who are not eligible to measure photoplethysmographic signals. This study aims to recruit 100 participants in total. The participants are required to record photoplethysmographic signals by the ring device in addition to routine procedures of direct-current cardioversion or catheter ablation, hence, the study is at minimal risk.

Autoimmune diseases, such as systemic lupus erythematosus, rheumatoid arthritis, myositis, or anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis, may affect multiple organ systems. Occasionally, patients deteriorate acutely requiring advanced care in an intensive care unit (ICU). In an ICU setting, mortality is estimated with scoring systems, such as APACHE or SAPSII. Since there are limited data available on their use in autoimmune diseases, with the current study, we aim to assess the usefulness of these ICU scores and analyze predictors of mortality in this particular group of patients.

The aim of this study was to observe the level of anxiety and its relationship with cardiovascular changes in each implant.

estimate the percentage of fungal infection in the pathogenesis of diabetic foot osteomyelitis and assess the outcome of patients with fungal diabetic foot osteomyelitis

Diabetic retinopathy (DR) is the leading cause of impaired visual function and blindness in adults. The fundus photographs were examined to detect DR. The DR severity was graded non-proliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR) according to the International Clinical Diabetic Retinopathy and Diabetic Macular Edema Disease Severity Scales. The pathogenesis of DR is complex and not fully understood, and platelet aggregation, microvascular damage, microvascular enlargement, leakage, hemorrhage, or obstruction, resulting in retinal hypoxia and retinal neovascularization. Traditional Chinese medicine (TCM) diagnostic tools are non-invasive and convenient. This study apply TCM diagnostic tools for clinical diseases, providing objective diagnostic data for evaluation to assess the association of blood stasis and DR. Furtherly we would evaluate the sensitivity and specificity of TCM diagnostic tools. This study is a prospective cross-sectional study. We enroll participants form the department of Chinese medicine, China Medical University Hospital. In total, 100 participants , composed of 50 of type 2 diabetes and 50 of diabetic retinopathy, whom previously had a retinal examination. We apply tongue diagnosis system, pulse wave analysis, body constitution questionnaires, and nailfold capillaroscopy to assess the differences of TCM diagnosis in DR. This study aims to identify the clinical symptoms of DR with TCM diagnostic tools and investigate the pattern difference and treatment for DR. Furtherly, we could design a clinical trial with improving blood circulation to treat or prevent DR, and improve the health status and quality of life in patients with type 2 diabetes.

The purpose of this study was to clarify the possible mechanism of hypoxemia after surgical treatment of type A acute aortic dissection and the possible mechanism of the treatment role of inhaled nitric oxide in refractory hypoxemia.