View clinical trials related to Coronary Vasospasm.
Filter by:Investigators hypothesize that CPAP treatment for suppressing OSAS in combination with a physical activity program will optimize 24-hour blood pressure control in patients with OSA-related resistant hypertension.
Low intensity shockwaves have been proven in animal and human studies to increase tissue perfusion, promote angiogenesis and tissue regeneration and improve neural function. The hypothesis of this study is that shockwave therapy could improve the symptoms of patients with resistant hypertension.
The research of clinical effectiveness assessment is to explore the causal relationship between treatment and outcome.Accordingly, based on the effectiveness of tan-yu treatment, the research takes the Resistant Hypertension (RH) as example to study the causal inference methods under real world.
Autonomic nerve function is involved in both blood pressure (BP) regulation and the pathogenesis of coronary artery spasm(CAS), but few studies have been published about the relationship between CAS and effect of BP lowering drugs in patients with hypertension. The purpose of this study is to investigate the incidence of CAS, atrioventricular (AV) block and effect of BP lowering drugs on CAS in hypertensive patients treated with BP lowering agents. The investigators will register consecutive patients who underwent coronary angiography with an acetylcholine (Ach)-induced provocation test. The investigators will include hypertensive patients who were taking antihypertensive drugs, and exclude patients who had a documented history of cardiovascular disease or who were not treated with antihypertensive agents. CAS is defined as >70% luminal narrowing on Ach provocation and /or concurrent chest pain. The study population will be divided into quartiles of rising systolic BP and diastolic BP. The incidence of Ach-induced CAS according to each systolic BP/diastolic BP quartile will be evaluated.
Autonomic nerve function is involved in both blood pressure (BP) regulation and the pathogenesis of coronary artery spasm (CAS), but few studies have been published about the relationship between CAS and BP, with the exception of studies that explore hypertension as a risk factor for CAS. The purpose of this study was to investigate the incidence of CAS and atrioventricular (AV) block in association with BP level. The investigators will register consecutive patients who underwent coronary angiography with an acetylcholine (Ach)-induced provocation test from November 2004 to May 2012. The investigators exclude from the patients who were taking antihypertensive drugs or who had a documented history of cardiovascular disease in order to avoid the confounding effects of cardiovascular medications on coronary vasomotion. CAS is defined as >70% luminal narrowing on Ach provocation and /or concurrent chest pain. The study population will be divided into quartiles of rising systolic BP and diastolic BP. The incidence of Ach-induced CAS according to each systolic BP/diastolic BP quartile will be evaluated.
patients with resistant hypertension will be submitted to an exercise protocol in a heated pool for three months
Catheter-based renal sympathetic modification has been documented to be effective option for blood pressure control in patients with resistant hypertension, but the safety is still concerned around worldwide. Based on anatomic findings, blocking renal sympathetic nerves at proximity may be enough for successful renal sympathetic modifications. This study was designed to compare the efficacy and safety of full length versus proximal ablation of bilateral renal arteries.
The TIVUS II is a prospective, multicenter, non-randomized, open-label clinical study of the safety and performance of the TIVUS™ System consisting of three (3) concurrent cohorts: - TIVUS™ Severe Resistant HTN Cohort - TIVUS™ Moderate Resistant HTN Cohort - TIVUS™ Failed RF Therapy Cohort
The purpose of this study is to determine the effect of repeated renal denervation in non-responding patients with severe hypertension. Therefore ultrasound technique will be used.
The contribution of this study is the unedited evaluation of the circadian autonomic profiles of resistant hypertension with and without white-coat response.