What is meant by phonocardiogram?

What is meant by phonocardiogram?

phonocardiography, diagnostic technique that creates a graphic record, or phonocardiogram, of the sounds and murmurs produced by the contracting heart, including its valves and associated great vessels.

What is the difference between ECG and PCG?

ECG and PCG have different speci fi cations because ECG is produced by the electrical activities of the heart, while PCG is produced by mechanical activities of the heart. Therefore, algorithms developed for ECG segmentation cannot be applied directly for PCG segmentation.

What is S1 on a phonocardiogram?

Phonocardiograms (cardiac sounds) as they are called, represent the most vital physiological and pathological information about the human body. The two vital sounds in it are first cardiac sound (S1) and the second cardiac sound (S2). Cardiac sounds different from normal sounds are called as abnormal sounds.

What is the first systolic tone of the heart?

First Heart Sound (S1) The first heart sound results from the closing of the mitral and tricuspid valves. The sound produced by the closure of the mitral valve is termed M1, and the sound produced by closure of the tricuspid valve is termed T1.

What is VCG in ECG?

Vectorcardiography (VCG) is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point. Vectorcardiography. Normal vectorcardiogram.

How does Ballistocardiography work?

The ballistocardiograph (BCG) is a measure of ballistic forces generated by the heart. The downward movement of blood through the descending aorta produces an upward recoil, moving the body upward with each heartbeat….

What is PCG signal?

Phonocardiogram (PCG) signal represents recording of sounds and murmurs resulting from heart auscultation. Analysis of these PCG signals is critical in diagnosis of different heart diseases.

What is ECG PPG?

ECG & PPG Sensors Defined ECG (electrocardiography) sensors measure the bio-potential generated by electrical signals that control the expansion and contraction of heart chambers. PPG (photoplethysmography) sensors use a light-based technology to sense the rate of blood flow as controlled by the heart’s pumping action.

What are S1 S2 S3 S4 heart sounds?

These two phases constitute the heartbeat. In a healthy adult, the heart makes two sounds, commonly described as ‘lub’ and ‘dub. ‘ The third and fourth sounds may be heard in some healthy people, but can indicate impairment of the heart function. S1 and S2 are high-pitched and S3 and S4 are low-pitched sounds.

What is S1 and S2 positive meaning?

S1 is a slightly low-pitch sound that is heard the loudest at the apical region as the result of the closure of atrioventricular valve, while S2 is a slightly high-pitch sound heard at the apical region as the result of the closure of arterial valve. 7.

Which is louder lub or dub?

“Lub’ sound of heart beat is louder than ‘Dubb’heart sound.