Isosorbide Dinitrate

The goal of this clinical trial is to evaluate the accuracy and feasibility of transdermal glomerular filtration rate (tGFR) assessment using relmapirazin (Lumitrace) and the MediBeacon tGFR system compared to plasma clearance measurement of GFR in adults with heart failure. The main question it aims to answer is the comparison of the transdermal-derived GFR for each participant using the MediBeacon tGFR to their nGFRBSA measurement. Participants will participate in a Screening visit that will take place within 15 days of the scheduled administration of Lumitrace and iohexol. On dosing day, participants will have the tGFR reusable sensor with disposable adhesive ring placed on their chest, and the MediBeacon Transdermal GFR System initiated to collect background fluorescence. Following an injection of Lumitrace and iohexol and the initiation of GFR assessments, participants will be followed at the study center for 10-24 hours. All participants will participate in a follow-up phone call approximately 7 days after the last exposure to Lumitrace and iohexol. Researchers will analyze the results to compare the tGFR values to the nGFRBSA measurements for each participant.

This study is an investigator-initiated, cluster-randomized implementation trial evaluating a large language model (LLM)-based clinical decision support (CDS) tool designed to improve guideline-directed medical therapy (GDMT) for adult patients with heart failure seen in outpatient cardiology clinics at Mass General Brigham. For eligible heart failure encounters, the CDS tool reviews existing electronic health record (EHR) data, including diagnoses, medications, vital signs, laboratory results, and recent notes, and generates brief, clinician-facing messages suggesting opportunities to initiate or optimize GDMT and highlighting relevant safety considerations. Messages are delivered to cardiology providers via Epic InBasket and/or institutional email prior to scheduled visits. The tool is advisory only and cannot place orders or change medications automatically; all treatment decisions remain at the discretion of the treating clinician and patient. Cardiology providers are assigned at the provider/clinic level to early implementation of the CDS tool versus usual care (no messages) during the initial phase. The primary outcome is GDMT optimization within 30 days of an index visit. Secondary outcomes include feasibility of CDS generation and delivery and a 30-day safety composite (e.g., heart failure hospitalization, acute kidney injury, hyperkalemia, hypotension or bradyarrhythmia plausibly related to GDMT).

Heart failure is a high-risk, chronic condition that impacts patients' mental health. Approximately 50% of heart failure patients experience comorbid mental health conditions, such as stress, depression and anxiety, which affect their day-to-day lives. Despite this interconnection, the integration of mental health awareness and support into cardiac care remains limited. To address this gap, the FRAME (Foundation, Recognition, Awareness, Management, Engagement) intervention was co-designed by researchers, healthcare providers, health system decisionmakers, and patient partners. This pilot study evaluates the feasibility of implementing the FRAME intervention in pilot clinical sites within two health regions in Ontario, Canada, including team-based family medicine clinics, cardiac rehabilitation/specialist clinics, and emergency departments. Utilizing a pretest-posttest hybrid 1 model intervention design, this study evaluates process indicators and patient-focused outcomes through surveys and semi-structured qualitative interviews. Findings from this study will inform a future large scale cohort study and scalable integration of the FRAME tool into existing cardiac care pathways to enhance mental health awareness and support among heart failure patients.

The goal of this study is to learn whether stopping beta-blockers can help older adults with heart failure with preserved ejection fraction (HFpEF) feel better and function better. This study will test whether "deprescribing" or stopping these medications in a careful, guided way can improve symptoms and quality of life. Participants will be randomly assigned to one of two groups: Deprescribing group: Beta-blockers are gradually reduced using capsules that contain decreasing doses. Usual care group: Beta-blockers are continued at the usual dose in look-alike capsules. All participants will: * Take study medicine for about 4 months * Have their blood pressure and heart rate monitored * Complete regular phone calls and questionnaires about how they are feeling This study does not involve any experimental medication. Participants active involvement in the study will last approximately 4 months. During these 4 months they will have 8 scheduled telephone visits.

The overall objective of this study is to determine whether the addition of SGLT2 inhibitors to usual care in hospitalized patients with heart failure associated acute kidney injury is safe and efficacious. Investigators will assess if SGLT2 inhibition improves a composite cardio-renal outcome (mortality, dialysis, AKI progression, decongestion metrics, heart failure symptoms). Secondary objectives of this study are to compare individual components of the composite outcome as well as changes in biomarkers of kidney injury, inflammation, repair and oxidative stress between those exposed to the SGLT2 inhibitor vs placebo.

The goal of this clinical trial is to learn if the drug finerenone (Karendia) can improve heart function in participants who are at risk for heart and kidney disease. The main question it aims to answer is whether adding finerenone to standard-of-care heart failure medical therapies will beneficially alter the heart structure and function of people who have risk factors for heart and kidney complications and whose left side of the heart is enlarged. The researchers will compare finerenone to a placebo (a look-alike substance that contains no drug) to see if finerenone improves heart structure and function. Participants will: * take a finerenone or a placebo tablet once a day for 12 months * have a cardiac magnetic resonance imaging (cMRI; a safe, non-invasive scan to measure heart mass, stiffness and function) test at the beginning of the study and 12 months later * visit the clinic after one, three, six and twelve months to assess overall health and/or perform blood or urine tests

The goal of this clinical trial is to learn if increasing the dose of diuretics to achieve a higher urine sodium target produces better clinical results when treating patients hospitalized with acute heart failure when compared to lower urine sodium target and standard of care. The main questions it aims to answer are: 1. Does targeting a higher urine sodium goal achieve greater natriuresis and diuresis? 2. Does targeting a higher urine sodium goal reduce frequency of hospital readmissions? 3. Does targeting a higher urine sodium goal reduce hospital length of stay? Researchers will compare natriuresis-guided arms with standard of care to see if targeting higher natriuresis goals improves significantly over current practice. Participants will submit urine samples at routine intervals after being given diuretics to evaluate urine sodium concentration. If urine sodium is low then diuretic dose will be increased.

This study will look at whether using a phone app called StudyU can help people with Heart Failure with Reduced Ejection Fraction (HFrEF) reach their recommended dose on their beta blocker.

This is a pivotal, global, prospective, cross-sectional, multicentric clinical investigation designed to explore a non-invasive, reliable alternative to invasive, catheter-based hemodynamic assessments, which are associated with procedural risks and limited applicability in certain participant populations.

The goal of this study is to see whether this type of Artificial Intelligence (AI) Voice Assistant can reliably capture patient-reported health information to support communication between patients and their healthcare team.

Heart failure (HF) affects over 6 million people in the US and is a major cause of both hospital admissions and death. HF has many causes and contributing factors. One of the most aggressive forms of HF is associated with methamphetamine abuse, which has become its own epidemic in the US over the past twenty years. People who use methamphetamine tend to develop HF at a much younger age, with more severe disease and more serious consequences. A recent analysis using nationwide data, methamphetamine use doubled the risk of death or hospitalizations compared to non-users in patients with HF. Thus, methamphetamine users with HF represent a very high-risk group of patients from a healthcare perspective. HF may be reversible in some patients who use methamphetamine if patients can achieve 1) abstain from further methamphetamine use and 2) consistently take all the medications that can improve HF. These two goals are very difficult to achieve in practice, as the care of both methamphetamine addiction and HF requires specialized medical expertise and intensive regular follow up of patients. In general, achievement of one goal is not possible without the other. Patients who use methamphetamine have poor adherence to medical follow-up and therapies, and abstinence from methamphetamine is difficult to maintain. This is further complicated because the current model of HF care does not incorporate treatment for methamphetamine use. The current study proposes to launch a multidisciplinary clinic that treats both HF and methamphetamine use disorder at the same time. The HF care will be led by a cardiologist while the methamphetamine use treatment will be led by a psychiatric clinical pharmacist trained in addiction medicine. State-of-the-art HF care will include optimization of four pillar HF medications. Methamphetamine use treatment will include counseling and incentivized abstinence known as contingency management (CM). The investigators will manage the patients in the clinic for 6 months total. The investigators are interested in demonstrating that this integrated clinic model will result in improved delivery of care for these patients by reporting the rates of successful abstinence from methamphetamine, improved optimization of the four HF medications, and enhanced patient reported quality of life over the 6 months of follow up. The investigators will also collect data on the costs associated with providing this level of care and estimate a range of potential cost-savings.

The purpose of this study is to compare the effectiveness of AI-guided LBBAP versus conventional LBBAP (not AI-guided) in improving CRT response rates and clinical outcomes.