Cardiovascular Physiological Phenomena
Conditions
Keywords
Heart sounds, smartphone, application
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).
Interventions
DIAGNOSTIC_TESTHeart sound recording using smartphone application
Heart sound recording and analysis using android smartphones (Samsung Galaxy S5, Galaxy S6, and LG G3)
Sponsors
Korea Advanced Institute of Science and Technology
Seoul National University Hospital
Study design
Observational model
CASE_ONLY
Time perspective
CROSS_SECTIONAL
Eligibility
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy of CPstethoscope in interpretation of heart sounds | 0 | specificity, sensitivity, negative predictive value, positive predictive value |
Countries
South Korea
Outcome results
None listed