Related Experiment Video
Updated: Aug 1, 2026
Semi-automated Optical Heartbeat Analysis of Small Hearts
Published on: September 16, 2009
Computer-based detection and analysis of heart sound and murmur
M El-Segaier1, O Lilja, S Lukkarinen
1Department of Paediatrics, Division of Paediatric Cardiology, Lund University Hospital, Sweden. milad.el-segaier@skane.se
A new digital algorithm accurately detects heart sounds and defines cardiac cycle phases. This method enables computer-based characterization of pediatric systolic murmurs, improving diagnostic capabilities.
Area of Science:
- Cardiology
- Biomedical Engineering
- Signal Processing
Background:
- Accurate detection of heart sounds is crucial for diagnosing pediatric cardiac conditions.
- Characterizing systolic murmurs aids in identifying underlying heart defects.
Purpose of the Study:
- To develop a digital algorithm for detecting first and second heart sounds.
- To define systole and diastole using electrocardiography (ECG) and heart sound data.
- To characterize systolic murmurs in children.
Main Methods:
- Recorded heart sounds in 300 children using an electronic stethoscope.
- Developed a digital algorithm using R-waves and T-waves from ECG as references.
- Analyzed sound signals using short-time Fourier transform for murmur characterization.
Main Results:
- Achieved 100% detection rate for the first heart sound relative to R-wave.
- Obtained a 97% detection rate for the second heart sound relative to T-wave.
- Successfully identified systolic and diastolic phases and quantified murmur characteristics.
Conclusions:
- The developed algorithm provides a foundation for computer-based detection and characterization of heart sounds and murmurs.
- This technology has the potential to enhance the diagnosis of pediatric cardiac conditions.
- Further development can lead to automated screening tools for congenital heart disease.
More Related Videos
11:50High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart
Published on: July 9, 2010
06:07Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
Published on: May 23, 2021
Related Concept Videos
01:30Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
01:30Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:15Heart Sounds
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
01:25Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
Gallops:
01:17Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...