Testing Automated Echocardiography

Study Overview
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Brief Summary
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The purpose of this research is to determine if software can accurately predict certain heart parameters from chest wall ultrasound (non-radiation, non-invasive, imaging modality). An approved ultrasound device (Lumify) will be used to obtain images prior to cardiac surgery.

Detailed Description
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This is a prospective, non-randomized, single visit clinical study. No additional interventions or follow-ups to the subject will be conducted as part of the study. All investigational scanning will be conducted using the as low as reasonably achievable (ALARA) principle to ensure the safety of the subjects. As ultrasound imaging is based on non-ionizing radiation, it is generally considered safe when used by appropriately trained health care providers. The study population will be adults. There are no specific enrollment targets, however it is expected that 120 subjects or fewer will be scanned to obtain the required 40 echocardiographic exams to complete this study. Exceeding the enrollment target of 120 subjects will require an amendment to the protocol. It is estimated this study will last for 12 months, at that time it will be evaluated and may potentially be amended. This study is considered non-significant risk. There is no specific benefit to individuals participating in the study, however the feedback received is used to improve Philips systems and that can lead to increased diagnostic ability in future products.

Official Title
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Repeatability, Reproducibility, and Efficacy Testing of Automated Hemodynamic Output by Transthoracic Echocardiography

Conditions
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This Study is Being Conducted to Collect Echocardiographic Data to Test the Lumify Ultrasound With Hemodynamic Automation Device

Intervention / Treatment
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* Diagnostic Test: Ultrasound imaging


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient willing and capable of providing informed consent and physically capable of performing study related activities Patient undergoing any of the following types of cardiac surgeries: Aortic valve repair Aortic valve replacement Mitral valve repair Mitral valve replacement Tricuspid valve repair Tricuspid valve replacement Pulmonic valve repair Pulmonic valve replacement Ascending aorta replacement Coronary Artery Bypass Graft (CABG) surgery Exclusion Criteria: Pregnant women Patients known to be under the jurisdiction of the Department of Corrections Patients with persistent arrhythmias as confirmed by the principal investigator (MacKay) on a caseby-case basis (e.g. atrial fibrillation, atrial flutter, frequent premature ventricular contractions, frequent premature atrial contractions, etc.) Patients with a contraindication to Pulmonary Arterial Catheter (PAC) monitoring as confirmed by the principal investigator (MacKay) on a case-by-case basis (e.g. tricuspid or pulmonic valve endocarditis, venous thrombosis present in the superior vena cava, right atrium, or main pulmonary artery) Patients with a contraindication to TEE monitoring as confirmed by the principal investigator (MacKay) on a case-by-case basis (e.g. previous esophageal surgery, prior gastric bypass surgery, esophageal varices).

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Patient undergoing a cardiac surgery<br>Patients undergoing cardiac surgeries listed in inclusion criteria will be in this group. | Diagnostic Test: Ultrasound imaging<br>* The intervention is non-invasive, chest wall, echocardiographic image acquisition in the cardiac operating room prior to a scheduled cardiac surgery. Echocardiographic images will be taken at three, key, timepoints in the operating room prior to cardiac surgery: Pre-induction. Post-induction / Pre-PAC Post-induction / Post-PAC<br>* Other names: Hemodynamic Automation device;|
| Clinicians<br>Clinicians defined as physicians (e.g. attendings, fellows, residents) or advanced practice providers (e.g. nurse practitioners and physician assistants) will be in this group. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Correlation Testing Lumify Ultrasound with Hemodynamic Automation | Correlation between the hemodynamic parameters (e.g. stroke volume, cardiac output, cardiac index) obtained from the Lumify Ultrasound with Hemodynamic Automation with same hemodynamic parameters obtained from the reference standard of transesophageal echocardiography and pulmonary arterial catheterization by a single echocardiographer. | 08/01/2021 - 08/31/2022 | 
| Repeatability (intraobserver variability) of hemodynamic parameters obtained from the Lumify Ultrasound with Hemodynamic Automation | Repeatability of the hemodynamic parameters (e.g. stroke volume, cardiac output, cardiac index) obtained from the Lumify Ultrasound with Hemodynamic Automation at set time intervals of one minute by a single echocardiographer. | 08/01/2021 - 08/31/2022 | 
| Reproducibility (interobserver variability) of hemodynamic parameters obtained from the Lumify Ultrasound with Hemodynamic Automation | Reproducibility of the hemodynamic parameters (e.g. stroke volume, cardiac output, cardiac index) obtained from the Lumify Ultrasound with Hemodynamic Automation at set time intervals of one minute by a multiple echocardiographers blinded to each other's data. | 08/01/2021 - 08/31/2022 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinical Efficacy of hemodynamic parameters obtained from the Lumify Ultrasound with Hemodynamic Automation | Clinician providers will evaluate the clinical efficacy of hemodynamic parameters obtained from the Lumify Ultrasound with Hemodynamic Automation by survey questions directly comparing the Lumify echocardiographic imaging to the reference standard | 08/01/2022 - 08/31/2023 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hemodynamic Automation device, Philips Ultrasound, Ultrasound, Lumify Ultrasound, Aortic valve repair, Mitral valve repair, Aortic valve replacement, Mitral valve replacement, Tricuspid valve repair, Tricuspid valve replacement, Pulmonic valve repair, Pulmonic valve replacement, Ascending aorta replacement, Coronary Artery Bypass Graft, Imaging, Lumify Ultrasound with Hemodynamic Automation, Automated hemodynamic output, Point-of-care echocardiographic imaging, Cardiac Surgery