Why is Phonocardiography used?
Why is Phonocardiography used?
Medical use Phonocardiography allows the detection of subaudible sounds and murmurs and makes a permanent record of these events. In contrast, the stethoscope cannot always detect all such sounds or murmurs and provides no record of their occurrence.
What is the relationship between pulse and ECG?
Both ECG and wrist pulse signal can be invasively acquired and are mainly caused by cardiac activities. But ECG is a signal of electrical activity, while wrist pulse is a signal of bloodstream. Compared with ECG, wrist pulse signal can be affected by more other physiological or pathological factors.
What is stethoscope answer?
The stethoscope is an acoustic medical device for auscultation, or listening to internal sounds of an animal or human body. A stethoscope can be used to listen to the sounds made by the heart, lungs or intestines, as well as blood flow in arteries and veins.
What is the name of the thing doctors use to listen to your heart?
Your doctor will use a stethoscope to hear your heartbeat. The closing of your heart’s valves makes a “lub dub” noise. The doctor can check your heart and valve health and hear your heart’s rate and rhythm by listening to those sounds.
What is a phonocardiogram (PCG)?
The phonocardiogram (PCG) detects and records heart sounds, the sounds made by the various cardiac structures pulsing and moving blood. The sound is caused by the acceleration and deceleration of blood and turbulence developed during rapid blood flow.
What does S1 and S2 mean on a phonocardiogram?
A phonocardiogram (PCG) showing the power (intensity) of sound on the Y-axis and time on the X-axis. S1 is the first heart sound; S2 is the second heart sound.
What is the difference between normal and pathological heart sounds?
Normal heart sounds are low-frequency transient signals generated by the heart valves, whereas pathological heart sounds, such as heart murmurs, are high-frequency, noise-like sounds ( Ergen et al., 2012 ).
What is a PCG sound waveform?
A phonocardiogram (PCG) is a special sound waveform that plots in high fidelity the intensity of heart sounds over time. The two fundamental heart sounds, called “S1” and “S2”, are shown on a PCG as large magnitude deflections occurring one after the other, with S1 first.
