Cardiac Auscultation Using Smartphones

Completed

• Conditions: Cardiovascular Physiological Phenomena

• Registration Number: NCT03273803
• Lead Sponsor: Seoul National University Hospital

Brief Summary

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.

Detailed 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).

Study Timeline

• Study Start: 2016-08-24
• Primary Completion: 2016-10-31
• Study Completion: 2017-06-08
• Status Verified: 2017-09
• Study First Submitted: 2017-09-03
• Study First Submitted QC: 2017-09-03
• Last Update Submitted: 2017-09-05
• Study First Posted: 2017-09-06
• Last Update Posted: 2017-09-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Not specified
• Target Recruitment: 46

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

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Accuracy of "CPstethoscope" in interpretation of heart sounds	0	specificity, sensitivity, negative predictive value, positive predictive value

Trial Locations

Locations (1)

Seoul National University Bundang Hospital; 🇰🇷 Seongnam, Gyeonggi-do, Korea, Republic of