Cardiac Auscultation Using Smartphones

Seoul National University

Status: Completed

Conditions: Cardiovascular Physiological Phenomena

Treatments: Diagnostic Test: Heart sound recording using smartphone application

Study type: Observational

Funder types: Other

Identifiers

NCT03273803

B-1609-361-303

Details and patient eligibility

About

The investigators performed a proof-of-concept study enrolling subjects with normal and pathologic heart sounds. Heart sound was recorded by auscultation on the skin of the chest wall using three smartphones: Samsung Galaxy S5 and Galaxy S6, and LG G3 . Recorded heart sounds were processed and classified by a diagnostic algorithm using convolutional neural networks.

Full description

Heart sound recording was done by researchers who were familiar with the use of the app and understand the principles of cardiac auscultation.

Reference heart sounds were recorded using an electronic stethoscope (3M™ Littmann® Electronic Stethoscope Model 3200). Study devices included Samsung Galaxy S5 (model SM-G900), Galaxy S6 (SM-G920), and LG G3 (LG-F400).

Enrollment: 46 patients

Sex

Volunteers: No Healthy Volunteers

Inclusion criteria

• subjects who gave informed consent
• subjects who are 18 years old or older and had performed ECG and echocardiography during the previous 6 months.

Exclusion criteria

• subjects with impairment of cognition