Recognition of Heart Failure With Micro Electro-Mechanical Sensors (REFLECS) FI

Study Overview
=================
Brief Summary
-----------------
In this study the ability of smartphone sensors (accelerometer and gyroscope) to identify patients with heart failure will be studied.

Detailed Description
-----------------
Heart Failure (HF) is a condition where heart is unable to maintain adequate volume of blood in circulation corresponding to prevailing physiological demand. Gyrocardiography is a technique that utilizes micro electromechanical sensors (MEMS), accelerometer and gyroscope, to detect vibrations and rotation of thorax caused by cardiac motion. The main purpose of this study is to test the ability of an app of a smartphone with embedded motion sensors, positioned on the chest which measures the movements and function of the heart, to identify patients with different types of heart failure and their characteristics, as compared with clinical diagnosis. Echocardiography will also be used to confirm changes in cardiac cardiac mechanics including strain, cardiac torsion, diastolic filling characteristics.

Official Title
-----------------
Recognition of Heart Failure With Micro Electro-Mechanical Sensors (REFLECS) FI

Conditions
-----------------
Cardiovascular Diseases, Heart Failure, Heart Diseases

Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Age >18 years Patients visiting hospital for heart failure, either outpatient clinic or cardiac ward Signed informed consent as an acceptance to participate to the trial Exclusion Criteria: Age <18 years Severe cardiac valve disease Previous prosthetic cardiac valve Major adverse cardiovascular event or surgery within 6 weeks of planned study enrollment Patients with pacemaker Informed consent form not signed.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| HFpEF<br>HF patients with preserved ejection fraction (HFpEF) | |
| HFrEF<br>HF patients with reduced ejection fraction (HFrEF) | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| HF specific motion sensor characteristics validation against echocardiography and other clinical features | The study aims to validate HF specific characteristics obtained with accelerometer (m/s2) and gyroscope (degree/s) against the current gold standard, detailed echocardiography examination in individuals already diagnosed with HF. Data of anonymised subjects without diagnosed or suspected HF will be used as controls to study the detection of HF. | From the hospital admission to study closure visit, on average 15 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| HF decompensation specific motion sensor characteristics validation | The ability of the motion sensors to detect differences in myocardial mechanics in patients with decompensation episode compared to patients without decompensation episode, assessed by receiver operating characteristics (ROC). | 14 weeks |