Clinical Research Directory

Cor360: Clinician-Facing Broad-Spectrum Cardiac Phenotyping and Risk Assessment Using COR® Wearable ECG to Inform Outcomes-Oriented Care Pathways

Cor360 is an observational study evaluating whether extended wearable electrocardiogram (ECG) data can support broad-spectrum cardiac phenotyping and risk assessment beyond conventional single-purpose ambulatory rhythm monitoring. The study evaluates a clinician-facing, AI-enabled decision-support system that analyzes data from the Cor XT and Cor MDx wearable ECG devices and organizes patient-specific findings into an integrated Cor360 report for review by qualified clinicians. Rather than focusing only on detection of arrhythmias, Cor360 evaluates multiple dimensions of cardiovascular physiology and disease simultaneously. The active Cor360 indication panel may include more than 150 reportable findings or sub-findings organized across six clinically oriented pathways: Structural, Functional, Conductance, Hemodynamic, Neurohormonal/Autonomic, and Atrial Fibrillation/Ventricular Arrhythmia/Sudden Cardiac Death. Depending on the ECG data available for an individual participant, Cor360 may characterize findings and risk markers related to left ventricular hypertrophy and atrial enlargement; heart-failure phenotype and ejection-fraction-related abnormalities; conduction delay and heart block; repolarization and ischemia-related abnormalities; atrial fibrillation and atrial substrate; ventricular ectopy, nonsustained ventricular tachycardia and electrical-instability markers; syncope mechanisms; and selected ECG-derived hemodynamic and structural/functional surrogates. The platform may also evaluate autonomic regulation and heart-rate variability, cardiopulmonary coupling, sleep-disordered breathing and obstructive sleep apnea screening indicators, electrolyte-related ECG abnormalities, and other clinically relevant physiologic patterns. Cor360 is designed to move from isolated ECG findings toward multidimensional cardiac phenotyping and multi-pathway risk assessment. Individual findings may be combined into clinically meaningful phenotypes and risk profiles, such as atrial-fibrillation-prone substrate, heart-failure-related autonomic or repolarization profiles, ventricular electrical-instability patterns, ischemia-related risk signals, or sleep-disordered-breathing-related cardiovascular burden. Where repeated ECG studies are available, Cor360 may also assess changes in cardiac phenotype, physiologic state, and risk trajectory over time. Reports are individualized rather than identical across participants. Only indications supported by the participant's available data, signal quality, monitoring duration, and applicable analysis criteria are presented. Longer-duration recordings may support deeper assessment of autonomic function, sleep-related physiology, intermittent abnormalities, and longitudinal risk patterns. Cor360 also evaluates whether an extended wearable ECG record can support cross-domain clinical synthesis rather than requiring each physiologic signal to be interpreted in isolation. When appropriate, reports may link detected phenotypes and risk markers to guideline-informed care-pathway considerations while identifying uncertainty, data-quality limitations, and findings that are not reportable because monitoring-duration or signal criteria are not met. The primary objective of the study is to determine whether clinicians judge Cor360 reports to provide clinically actionable cardiac phenotyping or risk-assessment information. The study will also evaluate whether reviewing a Cor360 report changes, refines, or confirms a clinician's assessment or intended care pathway, and how Cor360 findings agree with available clinical reference information, standard-of-care testing, or independent expert review. The study includes adults 18 years of age or older with completed or planned Cor XT or Cor MDx wearable ECG monitoring. It includes retrospective and prospective single-study assessments, longitudinal repeated-study assessments, combined retrospective/prospective analyses, and selected limited-duration streaming or patient-activated event assessments. The protocol spans real-world acquisition settings, including home, clinic, ambulatory care, emergency department/triage, ambulance or transport, hospital-based, and hybrid clinic-to-home workflows. Where suitable reference information is available, Cor360 findings may be compared with 12-lead ECG interpretation, Holter or ambulatory ECG findings, echocardiography, other imaging, laboratory results, sleep testing, clinical diagnosis, or blinded expert-panel review. Cor360 is being evaluated as a clinician-facing decision aid and not as an autonomous diagnostic system. Its outputs are intended to augment clinical interpretation and support consideration of relevant care pathways, including rhythm management, heart-failure evaluation, ischemia assessment, conduction or pacing evaluation, and sleep-apnea work-up. The clinician remains responsible for diagnosis, treatment, testing, referral, and patient management.

COMPARE-VENT Feasibility Pilot Study

Cardiac disease complicated by respiratory insufficiency comprises the most frequent indication for cardiac intensive care unit (CICU) admission, with nearly one-third patients requiring advanced respiratory support and over 20% patients requiring invasive mechanical ventilation (IMV). IMV among patients with impaired cardiovascular reserve is further compounded by the adverse impact of positive pressure ventilation (PPV) and systemic sedation on intracardiac hemodynamics, pulmonary vascular mechanics and consequently end-organ perfusion. Despite widespread use, evidence guiding optimal ventilatory practices and mode selection in cardiovascular intensive care unit patients remains limited. Pressure-controlled and volume-controlled ventilation may differ in their effects on patient-ventilator synchrony, sedation requirements, and hemodynamic impact, but comparative data among patients with critical cardiac disease remains inconclusive. This pilot study will evaluate the feasibility of implementing a pragmatic cluster-randomized crossover trial comparing ventilatory modes in a contemporary cardiovascular intensive care unit.

Lung and Heart Function Across Decades of Life in Health

The main objective of this study is to develop baseline "normal" reference values of both lung and heart function for healthy adults within the age range relevant to the United States Veteran population who served in the Southwest Asia theater of military operations. This study will involve performing key components of the Department of Veterans Affairs the Airborne Hazards and Open Burn Pit Center of Excellence (AHOBPCE) and a VA network of Post-Deployment Cardiopulmonary Evaluation Network (PDCEN) Core Clinical Evaluation in asymptomatic unexposed healthy controls without known lung or heart disease to serve as a "normal" control comparator group for veterans evaluated by PDCEN.

Triple EIT (Electrical Impedance Tomography)

This study plans to learn more about ways to look at participant's lungs using new machines called Electrical Impedance Tomography (EIT). The EIT does not use harmful radiation like CT or x-ray. It is read through electrodes like using EKG reading heartbeats. The investigators want to compare the results of patients who have chronic respiratory disease to patients without chronic respiratory disease to learn more about lung structure and composition.

Observational, Non-Interventional Study Supporting Validation of VO2Max Estimation Methods Using Results in Patients Receiving Standard of Care Cardiopulmonary Exercise Tests (CPET)

In this study, the hypothesis being explored is that VO2Max and other CPET parameters can be accurately estimated from biosignals (namely, motion from accelerometers and cardiopulmonary variables from EKG) collected during activities of daily living using wearable biosensors worn by study participants. This study will aim to collect development and validation data for a machine learning algorithm and to evaluate the performance of the algorithm. A total of 1000 participants will be enrolled including: (Normal) 100 participants, self-reported healthy male and female participants aged 18 to 80 and (Standard of Care) 900 participants.

Effects of Rope Skipping in Cardiopulmonary Fitness in Children

The study will be conducted in a school setting, involving a randomized control trial (RCT) of 178 children aged 6 to 12. The participants will be divided into two groups: a control group engaging in regular physical education (PE) classes and an experimental group practicing rope skipping for 50 minutes, three times a week, over a period of 8 weeks. Cardiopulmonary fitness will be assessed before and after the intervention using the borg rating scale and talk test of perceived exertion.. Data will be analyzed to determine changes in endurance, heart rate recovery, and lung function between the groups. The expected outcome is a significant improvement in cardiopulmonary parameters among the rope-skipping group, highlighting the exercise's effectiveness in promoting heart and lung health in children.

Firefighter Collaborative Research Project

The goal of this research is to test interventions to reduce firefighter cardiovascular, cognitive, and overall disease risks, including but not limited to risks associated with Per- and Polyfluorinated Substances (PFAS) exposure. Approximately 1,500 - 2,000 firefighters will be enrolled in the Fire Fighter Cancer Cohort Study (FFCCS). Among these individuals, those that express interest will then be screened for eligibility for the Firefighter Collaborative Research Project (FCRP) using information they provided for the Fire Fighter Cancer Cohort Study. Firefighters enrolled in the study will provide an initial blood sample and urine sample. The blood sample will be analyzed to determine the participant's PFAS levels. Based upon serum PFAS levels and responses from the screening survey, eligible participants will be randomly assigned into one of the following interventions: 1. Blood Donation, or Plasma Donation or Blood/Plasma Control Group; 2. Zone 2 Training or Zone 2 Control; 3. Intermittent Fasting or Intermittent Fasting Control. Individuals participating in the blood donation, plasma donation or blood/plasma control group would donate blood every 12 weeks, plasma every 6 weeks, or not donate blood or plasma. Participants in this intervention arm would continue this for a 12-month period. Individuals in the zone 2 training, zone 2 training control, intermittent fasting or intermittent fasting control group would participate in their intervention or control for a 4-month period. After 4 to 12 months participating in an intervention or control group, participants will be asked to provide a final urine sample and blood draw to determine if and to what degree their PFAS levels or other cardiovascular disease and other health risks have changed.

Feasibility and Acceptability of Non Weight-bearing Physical Activity for People With Diabetic Foot Ulceration

Intervention in the form of a PA (physical activity) program combining aerobic, resistance, and flexibility exercises adapted for wearing a lower limb offloading device and limiting weight-bearing on the feet, with a duration of twelve (12) weeks, consisting of two supervised sessions and one unsupervised home session per week.