Cardiac Auscultation Using Smartphones

Seoul National University Hospital46 enrolled

Overview

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.

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).

Study Type

OBSERVATIONAL

Enrollment

Conditions

Cardiovascular Physiological Phenomena

Interventions

Heart sound recording using smartphone applicationDIAGNOSTIC_TEST

Heart sound recording and analysis using android smartphones (Samsung Galaxy S5, Galaxy S6, and LG G3)

Eligibility

Medical Language ↔ Plain English

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

Locations (1)

Seoul National University Bundang Hospital

Seongnam-si, Gyeonggi-do, South Korea

Outcomes

Primary Outcomes

Accuracy of "CPstethoscope" in interpretation of heart sounds

specificity, sensitivity, negative predictive value, positive predictive value

Time frame: 0

Data from ClinicalTrials.gov

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