Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

24 clinical studies listed.

Filters:

Arrythmia

Tundra lists 24 Arrythmia clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

RECRUITING

NCT04278404

Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS)

The study investigators are interested in learning more about how drugs, that are given to children by their health care provider, act in the bodies of children and young adults in hopes to find the most safe and effective dose for children. The primary objective of this study is to evaluate the PK of understudied drugs currently being administered to children per SOC as prescribed by their treating provider.

Gender: All

Ages: 0 Years - 20 Years

Updated: 2026-04-06

37 states

Coronavirus Infection (COVID-19)
Pulmonary Arterial Hypertension
Urinary Tract Infections in Children
+22
ACTIVE NOT RECRUITING

NCT03561805

Prolonged Continuous ECG Monitoring Prior to Transcatheter Aortic Valve Implantation

Patients with severe aortic stenosis candidates for a TAVI procedure harbor a high burden of silent arrhythmic events. Pre-procedural detection of such arrhythmias should help the investigators to implement specific therapeutic measures that may improve patient outcomes and reduce hospitalization length post-TAVI.

Gender: All

Updated: 2026-03-27

1 state

Aortic Valve Stenosis
Arrythmia
RECRUITING

NCT05034432

The PIVATAL Study -Study of Ventricular Arrhythmia (VTA) Ablation in Left Ventricular Assist Device (LVAD) Patients

To investigate the effect of VTA ablation at the time of LVAD implant to see if it can reduce the incidence of VTA after surgery

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-23

15 states

Arrythmia
Cardiomyopathies
NOT YET RECRUITING

NCT07392606

Validation of PET Questionnaire for Experience and Sustainability in Telemedicine. PET(Patient Experience in Telehealth)

Background: Telemedicine adoption has expanded rapidly in recent years, creating new opportunities for access to care, particularly for frail patients or those with mobility limitations. However, the large-scale deployment of remote healthcare services has highlighted the lack of validated instruments to systematically and multidimensionally assess patients' subjective experience. Patient experience is recognized as a key indicator of quality of care, with direct implications for treatment adherence, appropriate use of digital health technologies, and the effectiveness of organizational care models. Rationale: No instruments have been specifically validated in Italy to measure patient experience in telemedicine. In response, the Fondazione Policlinico Universitario A. Gemelli - Istituto di Ricovero e Cura a Carattere Scientifico (FPG IRCCS) developed, through a co-design process involving expert patients and healthcare professionals, the Patient Experience in Telehealth questionnaire (PET). The tool was designed to capture not only overall satisfaction, but also relational, informational, and organizational domains, as well as perceived economic and environmental impact. Objectives: The primary objective is psychometric validation of PET, assessing reliability and validity (construct, convergent, and discriminant). Secondary objectives include evaluating the perceived impact of telemedicine on care organization, patient-borne costs, and the environment, and exploring differences according to sociodemographic variables. Methods: This cross-sectional observational study will administer PET to at least 200 adult patients who received one or more telemedicine services at FPG IRCCS within the preceding three months. Content validity will be assessed by an expert panel. Descriptive analyses, exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and reliability testing will be performed. A subgroup will complete a test-retest assessment after 7-14 days. Hypothesis: PET is expected to demonstrate satisfactory psychometric properties, discriminate across different levels of patient experience, and capture the perceived organizational, economic, and environmental impacts of telemedicine in healthcare delivery.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-06

IBD
Arrythmia
Radiation Therapy Complication
NOT YET RECRUITING

NCT07388355

A Usability Study of a Multi-channel ECG Monitoring Device

This study it to evaluate the usability of the WearLinq eWave patch in a general adult population.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-05

1 state

Healthy Adult Participants
Heart Disease
Arrythmia
+1
RECRUITING

NCT06374277

Pharmacy-led Transitions of Care Intervention to Improve Medication Adherence

Socioeconomically disadvantaged populations with multiple chronic conditions have high rates of nonadherence to essential chronic disease medications after hospital discharge. Medication nonadherence after hospital discharge is significantly associated with increased mortality and higher rates of readmissions and costs among these patients. Major patient-reported barriers to essential medication use after hospital discharge among low-income individuals are related to social determinants of health (SDOH) and include: 1) financial barriers , 2) transportation barriers, and 3) system-level barriers. Although, medication therapy management services are important during care transitions, these services have not proven effective in improving medication adherence after hospital discharge, highlighting a critical need for innovative interventions. The Medication Affordability, Accessibility, and Availability in Care Transitions (Med AAAction) Study will test the effectiveness of a pharmacy-led care transitions intervention versus usual care through a pragmatic randomized controlled trial of 388 Medicaid and uninsured hospital in-patients with MCC from three large healthcare systems in Tennessee. The intervention will involve: 1) medications with zero copay, 2) bedside delivery then home delivery of medications, and 3) care coordination provided by certified pharmacy technicians/health coaches to assist with medication access, medication reconciliation, and rapid and ongoing primary care follow-up. We will examine the impact of the intervention during 12 months on 1) medication adherence (primary outcome) and 2) rapid primary care follow-up, 30-day readmissions, hospitalizations and emergency department visits, and costs. We will conduct key informant interviews to understand patient experience with the acre received during and after care transitions. By examining effectiveness of the intervention on outcomes including medication adherence, health care utilization, costs, and patient experience, this study will provide valuable results to health systems, payers, and policymakers to assist in future implementation and sustainability of the intervention for socioeconomically disadvantaged populations.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-29

1 state

Diabetes
Hypertension
High Cholesterol/Hyperlipidemia
+10
ENROLLING BY INVITATION

NCT05443321

Advancing Health Information Exchange (HIE) During Inter-hospital Transfer (IHT) to Improve Patient Outcomes

Sub-optimal transfer of clinical information during inter-hospital transfer (IHT, the transfer of patients between acute care hospitals) is common and can lead to patient harm. To address this problem, the investigators will use key stakeholder input to refine and implement an interoperable health information exchange platform that integrates with the electronic health record and improves the reliability of and access to necessary clinical information in three use cases involving transfer of patients between sending and receiving hospitals with varying levels of affiliation and health record integration. The investigators will assess the effect of this intervention on frequency of medical errors, evaluate the use and usability of this platform from the perspective of those that interact with it, and use these results to develop a dissemination plan to spread implementation and use of this platform across other similar institutions.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-23

1 state

Infections
Heart Failure
COPD Exacerbation
+13
RECRUITING

NCT05336877

Aveir VR Coverage With Evidence Development Post-Approval Study

The purpose of this coverage with evidence development (CED) study is to evaluate complications and long-term health outcomes of the single-chamber Aveir Single-Chamber Leadless Pacemaker device (Aveir VR LP).

Gender: All

Ages: 18 Years - Any

Updated: 2025-07-31

1 state

Cardiac Pacemaker
Arrythmia
Bradycardia
RECRUITING

NCT05932602

AVEIR DR Coverage With Evidence Development (CED) Study

The purpose of this coverage with evidence development (CED) study is to evaluate complications and long-term health outcomes of the dual chamber Aveir Leadless Pacemaker device (aka Aveir™ DR LP system).

Gender: All

Ages: 18 Years - Any

Updated: 2025-04-06

1 state

Cardiac Pacemaker
Arrythmia
Bradycardia
RECRUITING

NCT05935007

Aveir DR Real-World Evidence Post-Approval Study

The purpose of this post-approval study is to evaluate the long-term safety of the dual-chamber Aveir DR leadless pacemaker using real-world evidence methods.

Gender: All

Ages: 18 Years - Any

Updated: 2025-04-04

1 state

Cardiac Pacemaker
Arrythmia
Bradycardia
ENROLLING BY INVITATION

NCT05971433

Sympathetic Activity in Post-injury Outcomes: Impact on Sleep and caRdiovascular Health InvesTigation

The goal of this observational study is to learn about the long-term health of United States military service members who were injured during combat. The main questions it aims to examine are: * How does the severity of a combat injury impact 1) cardiovascular risk, 2) the sympathetic nervous system and arrhythmias, 3) blood pressure, and 4) sleep disorders? * Are self-reported mental health symptoms related to sympathetic nervous system hyperactivity, sleep disorders, and cardiovascular risk in combat-injured service members? This study will recruit from a sample of participants in another research study called the Wounded Warrior Recovery Project (WWRP) who 1) agreed to be contacted about future research studies and 2) have a record of a combat injury within the Injury Severity Score ranges required for this study. Participants will: * Provide demographic information and a medical history review * Visit a local laboratory for biometrics measurements and to provide blood and urine samples * Wear an ambulatory electrocardiogram monitor for 24 hours per day for seven consecutive days * Wear a home sleep test monitoring device for one night * Wear a blood pressure monitor for 24 consecutive hours on the day after the home sleep test At the end of the study, participants will be asked to mail back the home sleep test and blood pressure monitors. Prepaid package materials will be provided.

Gender: All

Ages: 18 Years - Any

Updated: 2025-01-27

1 state

Hypertension
Cardiovascular Diseases
Sleep Disorder
+3
RECRUITING

NCT06425887

Smartwatch Paroxysmal Arrhythmia Detection Compared with Holter

The lifetime risk for development of atrial fibrillation, the commonest sustained arrhythmia in adults, is estimated to be 24%-27% for individuals of 40 years or older. Previous work showed that annual new diagnosis of AF is 11000-26000 in Hong Kong. Other arrhythmia such as supraventricular arrhythmia or premature beats were also common and of clinical significance. 12-lead ECG is a first line investigation for patients with suspected paroxysmal arrhythmia, but it has a low diagnostic yield with its 10-30 seconds recordings. 24-hour Holter exam is the usual next step of diagnosis. The diagnostic yield of Holter varies according to indication but is generally low at 1%-12%. This is because paroxysmal arrhythmia may not happen every day. In addition, even if arrhythmia is picked up in Holter, patient may not register the symptom, making the symptom arrhythmia correlation problematic. Despite limitations, the demand for Holter exam is still high. In Prince of Wales Hospital, a tertiary referral centre with a catchment of about 1 million populations, the waiting time for a routine Holter exam is 3 years. Smartwatch has gained popularity over past years as an adjunct to smartphone. Latest generations of smartwatch were equipped with wearer-initiated ECG rhythm strip recording capabilities. Smartwatch has evolved to become a health tracker with arrhythmia detection capabilities. It was found to be a useful tool for atrial fibrillation screening in general population. Other arrhythmias, such as supraventricular tachycardia, premature beats, and abnormal ECG patterns associated with sudden cardiac death could also be detected with smartwatch ECG recordings. Apple Heart study was the largest study utilizing smartwatch for arrhythmia detection. The general population was screened for atrial fibrillation using irregular pulse algorithm. The study found a 84% concordance rate between irregular pulse notification and ECG patches. Therefore, investigators propose to conduct a study to compare its diagnostic yield with Holter, in patients with suspected arrhythmia and see if smartwatch recording following a systematic protocol for four-weeks will have better arrhythmia diagnosis yield than a 24-hour Holter exam.

Gender: All

Ages: 18 Years - 80 Years

Updated: 2024-10-28

Arrythmia
NOT YET RECRUITING

NCT06564376

Tailored MgSO4 Supplementation to Reduce Complications in Pediatric Heart Surgery

Lay Summary This study tests two ways of measuring blood magnesium after heart surgery. Children who need heart surgery may have heart and kidney problems after surgery. The right amount of magnesium in blood reduces this risk. This study will test the best way to measure magnesium. This will let doctors choose the right dose of MgSO4. MgSO4 is a magnesium supplement. Taking MgSO4 after heart surgery helps children. For each child, it is best to personalize MgSO4 dose. This is based on the amount of magnesium in blood. This study will test two ways of personalizing MgSO4 dose. In the blood, there are two kinds of magnesium. Usually, blood magnesium tests measure both forms together. This does not say anything about active magnesium. This study will measure the two forms separately. Then, MgSO4 will be given based on either the active or whole magnesium. Measuring active magnesium is good. Active magnesium levels change faster than total. That means active magnesium tests may better protect children. Also, active magnesium has more of an impact on heart and kidney function. Focusing on the active form will help these organs stay healthy. To test how well the MgSO4 is working, heart and kidneys will be examined. After surgery, certain harmful heart rhythms can occur. The types and number of harmful rhythms will be studied. Kidney problems can also happen after heart surgery. Kidney health will be studied. To help understand how active magnesium works, further tests will be done. These tests will look for evidence of poor health in the cells that make up the heart, kidney, and blood.

Gender: All

Ages: 0 Years - 18 Years

Updated: 2024-08-27

1 state

AKI - Acute Kidney Injury
Arrythmia
Congenital Heart Disease
RECRUITING

NCT06388629

Epicardial Access Study With Rook

The goal of this clinical trial is to test how how effective the Circa Scientific Rook® Epicardial Access Kit is at gaining guidewire access to the outside surface of the heart (epicardium). In addition the safety of the device will be compared to the available data for alternative methods of epicardial access. Participants will receive treatment with the subject device during the course of a typical epicardial electrophysiology procedure.

Gender: All

Ages: 18 Years - Any

Updated: 2024-08-21

Arrythmia
RECRUITING

NCT05270499

Aveir VR Real-World Evidence Post-Approval Study

The purpose of this post-approval study is to evaluate the long-term safety of the single-chamber Aveir VR leadless pacemaker using real-world evidence methods.

Gender: All

Ages: 18 Years - Any

Updated: 2024-08-20

1 state

Cardiac Pacemaker
Arrythmia
Bradycardia
RECRUITING

NCT06266845

Efficacy of Gamification With Escape-Room for Arrhythmia Identification in Critical Patients

Introduction: Health education provided through the escape-room is still a recent approach in educational methodology and tends to be a strategy that benefits nursing students, particularly in gaining knowledge and skills. However, few studies have explored the use of both in-person and virtual escape-room as an educational methodology in nursing. Objective: To assess the effectiveness of the gamification strategy through the in-person escape-room model compared to the virtual model in enhancing cognitive and affective competencies for recognizing cardiac arrhythmias in critical care patients within the nursing field. Method: A randomized clinical trial to be conducted with nursing students from higher education institutions in the Federal District, Brazil. Students will undergo a theoretical class on cardiac arrhythmias in critical patients and will then be randomized to experience either the in-person or virtual escape-room scenario. Knowledge tests, the Depression, Anxiety, and Stress Scale, Satisfaction and Self-confidence Scale in nursing management learning, and perceived gains will be administered pre and post-intervention. Results with p≤0.05 will be considered significant. Expected Results: It is anticipated that this study will contribute to the enhancement and broadening of cognitive and affective competencies in nursing students, improving the quality of care through an active educational strategy like the escape-room, and consequently reducing costs for the Unified Health System by minimizing errors in recognizing clinical changes in critical patients. Additionally, the study aims to address gaps in understanding the use of educational escape-rooms in the field of nursing.

Gender: All

Ages: 18 Years - Any

Updated: 2024-07-10

1 state

Arrythmia
Health Education
Escape-Room
RECRUITING

NCT06486818

Clinical Predictors of Short Term Outcomes of Ablation of Idiopathic Monomorphic PVCs

Clinical predictors of successful Pvcs ablation

Gender: All

Updated: 2024-07-05

Arrythmia
RECRUITING

NCT06431828

Remote Symptom Review in Patients With Implantable Diagnostic Holter

To study the clinical and organizational benefit of implementing a methodology for monitoring patients receiving an implantable diagnostic BIOMONITOR III holter and successive models, consisting of remote review of alerts sent by the device via the HOME MONITORING remote monitoring platform and the transmission of relevant patient symptoms through the use of a specific application installable on the patient's phone. The efficiency of this methodology will be compared with a control group consisting of monitoring through the usual clinical practice of the hospital.

Gender: All

Ages: 18 Years - 80 Years

Updated: 2024-05-31

Atrial Fibrillation
Syncope
Bradycardia
+1
RECRUITING

NCT04848844

The PAtients pResenTing With COngenital HeaRt DIseAse Register (ARTORIA-R)

Advances in surgical and medical care have led to improved outcomes in patients with congenital heart disease (CHD). As a consequence, the majority of patients nowadays survives to adulthood (adults with CHD, that is, adult CHD \[ACHD\]) with good quality of life. Despite the surgical success, the morbidity and mortality of ACHD is higher than in the general population and is linked to the development of heart failure (HF) in adulthood. HF occurs in approximately 25% of patients with ACHD, even in those patients in whom the congenital mal-formation has been corrected successfully in childhood. The time course and presentation are heterogeneous owing to variable congenital malformation and limitation of treatment options. ACHD with an anatomic right ventricle as the systemic ventricle (e.g., atrial switch operation in patients with transposition of the great arteries \[TGAs\]) and those with a functional single ventricle (e.g., Fontan circulation) appear to be at higher risk of developing HF. Young age at initial corrective surgery-often in the first 2 years of life-and lack of specific medical therapies can contribute to a high and early demand for heart transplantation in patients with ACHD.

Gender: All

Ages: 18 Years - Any

Updated: 2024-05-29

Congenital Heart Disease
Heart Failure
Transplant; Complication, Failure
+2
RECRUITING

NCT06371937

iPSC Biobank of Biomarkers Diversity in Cardiovascular Disease

The Investigators will create a clinical database and a Biobank of stem cells derived from the blood of participants with cardiovascular disease. The Investigators will recruit participants from diverse racial and ethnic backgrounds with equal representation from both sexes. The Investigators expect to create stem cells and analyze the blood for protein biomarkers and genetic causes of cardiovascular disease. The stem cell biobank and clinical data will be a powerful tool for studying cardiovascular disease.

Gender: All

Ages: 18 Years - 80 Years

Updated: 2024-05-29

1 state

Cardiovascular Diseases
Arrythmia
Cardiomyopathies
+4
NOT YET RECRUITING

NCT06422832

Remote Monitoring To Identify Worsening Heart Failure The REMOTI-HF Randomized Clinical Trial

Heart failure, characterized by high mortality and morbidity rates, frequent hospital admissions, and prolonged stays in cardiology wards, significantly impacts patients' quality of life. The REMOTI-HF is a single-center randomized controlled trial designed to assess the impact of remote monitoring, utilizing the HeartLogic and TriageHF algorithms, in patients with heart failure with implantable cardioverter defibrillator or cardiac resynchronization therapy. The primary endpoints include mortality, hospital admissions related to heart failure, and visits for worsening heart failure. Moreover, we will explore the full capabilities of these algorithms, by analysing the association of physical activity, measured by the devices, with the same key outcomes. Additionally, the research will explore the relationship between the absolute values provided by the algorithms and NT-proBNP values.

Gender: All

Ages: 18 Years - 85 Years

Updated: 2024-05-21

Heart Failure
Arrythmia
NOT YET RECRUITING

NCT06414447

Electrocardiogram (ECG) Validation Study

Comparison of diagnostic Electrocardiogram (ECG) signals

Gender: All

Ages: 18 Years - Any

Updated: 2024-05-16

Arrythmia
ENROLLING BY INVITATION

NCT03395509

The Intersectional Viborg Screening Program: Cost-(Effectiveness) of Screening for Diabetes and Cardiovascular Diseases

This is an intersectional and interdisciplinary screening program in Viborg Municipality, including 67 years old citizens. This observational study will estimate the cost-effectiveness of a combined screening program for the following conditions: Abdominal aortic aneurysm, peripheral arterial disease, carotid plaque, hypertension, arrhythmia, and type-2-diabetes. Furthermore, the incidence of the outlined conditions will be described and so will the result of the intervention initiated (secondary medical prophylaxis, smoking cessation, introduction to nutritionally deficient diet etc.)

Gender: All

Ages: 67 Years - 67 Years

Updated: 2024-02-01

Aging
Aortic Aneurysm, Abdominal
Hypertension
+5
RECRUITING

NCT04776642

Biobank for "Arrhythmia and Conduction Disorders: TowArd Pathophysiology Based Treatment"

The 'ADAPT' Biobank is a collection of body material and data from patients with or at risk of cardiac arrhythmias who underwent or will undergo (non-) invasive treatment for this disease. Its main objective is to obtain a comprehensive collection of patient information and material to facilitate research and gain better insight into the complex pathophysiology of the different arrhythmias, the multifactorial process, the heterogeneity in clinical presentation, and prognosis. Bodily material is used for biochemical marker assessments, histological and molecular analyses for research in cardiac arrhythmias.

Gender: All

Ages: 18 Years - Any

Updated: 2024-01-25

Arrythmia
Conduction Disorder
Pathophysiology