Science topic
Heart Sounds - Science topic
Heart Sounds are the sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a "lubb" sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling.
Questions related to Heart Sounds
Hello everyone!
I am looking for a PCG dataset of congenital heart disease afflicted patients for one of my undergraduate course projects. I have already explored the PASCAL, PhysioNet/CinC 2016, Michigan databases, but none of them seem to contain the congenital heart disease based annotation. I will be very thankful if anyone recommends where I can get such dataset.
Previoius studies showed that it is possible to evaluate fetal heart rate by heart sound signal. I wish to examine the previous methods. I am grateful if someone can share fetal heart sound records with me.
I am trying to work on simultaneous analysis of ECG and Sounds produced by heart beats. Actually what I am trying to propose in my research is how the heart sound & its variation in a specifics place and along different parts in the body could give interesting diagnostic information. And clubbed with ECG how can I further exploit the sound information to explore new diagnostic information. Any suggestions, recommended research papers....etc....would be highly appreciated.
I am working on classifying Mitral Regurgitation Heart Sound,Mitral Stenosis Heart Sound,Aortic regurgitation heart sound,Aortic Stenosis Heart Sound
I would like to classify heart sounds by frequency domain in order to increase efficiency.
Wiggers diagram show relationship in the cardiac cycle. How to get ECG signal and heart sound together? Some papers use Biopac, any other tools are able to get them together?
I used empirical mode decomposition (EMD) for heart signal processing. After employing EMD, now I have some IMFs. Based on what I read in the literature about EMD, I know that all of these IMFs may not have physical meaningful interpretation. Also, there can be a mode mixing problem (i.e. different modes of oscillation appear in one IMF or one mode spread across different IMFs).
1 - How can I recognize the IMFs that are physically meaningful?
2 - How can I solve the mode mixing problem in EMD?
P.S.: I used the attached Matlab code for EMD.
All answers and comments are kindly appreciated. Thank you in advance,
Amirtaha
I am currently working on differentiating normal and abnormal heart sound. Do I categorize physiological murmurs as normal heart sound?
