The purpose of this research study is to collect information on the safety of the TactiCath SE ablation catheter when it is used to treat atrial fibrillation.This study will collect information about the success of the procedure and report on the number and type of follow-up problems that may occur during or after the ablation procedure (sometimes called adverse events). Data collected for this study will be submitted for review and approval by the FDA.
This is an ancillary study on the Phase 3 parent trial (CREST-2) in which patients with asymptomatic high grade carotid artery stenosis have enrolled to receive either a novel intensive medical management plan alone, or in combination with either Carotid Endarterectomy (CEA) or Carotid artery stenting (CAS). Patients enrolled in CREST-H will undergo a baseline MRI and some patients will also undergo a followup MRI at 1 year. The purpose is to determine whether cognition can be improved by revascularization among the subset of CREST-2 patients with hemodynamic impairment and mild cognitive impairment at baseline.
The purpose of this study is to collect measurements related to the body such as blood pressure, the amount of oxygen in the blood, and heart rhythm recordings. Findings from this study may be used to help design new device-based monitoring technologies in the future.
Continuous blood pressure readings will be obtained during standard of care heart catheterization procedures that include the use of an arterial blood pressure line. Continuous readings of oxygen saturation and ECG will also be obtained. Participants will consist of subjects aged ? 18 years who are scheduled to undergo a cath-lab (cath-lab, percutaneous coronary intervention or equivalent) procedure that includes the use of an arterial blood pressure line.
The purpose of this clinical study is to see whether a medical device called the DiamondTemp Ablation Catheter (also called the DiamondTemp Ablation System) can restore the heart to a normal heart rhythm.The DiamondTemp Ablation System being evaluated in this research study is investigational because it is not approved by the FDA for the treatment of atrial fibrillation by radiofrequency ablation. The DiamondTemp System is like systems currently being used to treat atrial fibrillation with radiofrequency ablation including the control system that participants could be randomized to.
We have already observed that the blood cells known as monocytes from patients with the fibrotic disease scleroderma behave differently from monocytes from healthy controls. Here we will test whether patients with other fibrotic diseases also have altered monocyte function. Specifically, we will get blood from congestive heart failure and lupus patients and compare their monocytes to scleroderma patient and healthy subject monocytes. Our recent results in a mouse model for congestive heart failure suggest that we will find altered monocyte behavior in human congestive heart failure patients.
The REVAMP Clinical Study is a feasibility study in heart failure with preserved ejection fraction (HFpEF) patients who have normal to small left ventricular volumes and evidence of hypertrophy. The pacemaker Sleep function will be used in order to deliver a 5 hour block of sustained pacing at 100 bpm during the night for 4-8 weeks. The purpose is to investigate whether this elevated pacing therapy is tolerated and whether there is a signal of efficacy.
If tolerated the idea is that this will promote LV dilation, which will reduce stiffness in the heart and improve diastolic filling in HFpEF patients that have thickened ventricular walls.
The Palliative Performance Scale has been shown to predict survival among hospice and palliative medicine patients in the outpatient and inpatient clinical settings, where lower PPS scores are directly related to shorter survival. We seek to evaluate if this relationship persists among a racially diverse, older adult population when assessed at the time of admission from the emergency department.
For some patients with heart failure, we know that using a special pacemaker configuration called cardiac resynchronization therapy (CRT) can help them feel better and live longer. In fact, in these patients, we can see improvements in cardiac function with CRT as early as a few beats after we turn it on. However, some patients continue to be sick after CRT and ultimately require more help. Some of these patients will get a surgically implanted pump (called a left ventricular assist device, or LVAD) that does the work of their heart. We do not know if CRT continues to help (or may hurt) these patients. In this study, we will assess the effects of CRT in LVAD patients in the short term.
This is a prospective, multi-center, open-label trial conducted in the United States (US). The study is designed to collect real world data on subjects with heart failure who are receiving the CardioMEMS HF System. The CardioMEMS is an approved medical device. The CardioMEMS device is designed to provide current measurements of a specific heart pressure to physicians. This information will help guide medical therapy in order to help prevent heart failure hospitalizations.
The goals of this study are to understand the mechanisms behind the development of heart failure in children born with complicated heart defects consisting of a functional single pumping chamber, improve the ability to objectively measure cardiac function in these patients and determine the relationship of these pathophysiologic mechanisms to outcomes.