As we know, there is five phase of Korotkoff sound that could be heard during blood pressure measurement at patient's upper arm using non-electronic sphygmomanometer and stethoscope. Each phase of Korotkoff sound has a unique characteristics that could be distinghuished based on its acoustic parameters. From these parameters, in some research, we are able to know some physical condition of the vessel (like stiffness, age, etc.). But, could the features of each Korotkoff phases be intepreted directly as a sign of certain cardiovascular disease?
Very interesting question. It will be interesting to follow the answers.
Dear Dr. Naufal,
Thank you for your interesting question. Indeed, Korotkoff sound (KS) registration is useful and a pretty accurate method of indirect BP measurement. Each KS represents its degree of blood vessel lumen obturation and, from other hand, heart contractility. Doctors detect usually 1st and 5th KS for estimation of systolic and diastolic BP, respectively. I suppose your question contemplates an intriguing study of a possible relationship (between KS features and blood vessels conditions) rather than collects scanty information by such manner. There are reported studies concerning some aspects of KS. In particular H.Xiang et al. published their results on assessment of KS delay time in evaluating cardiovascular status. I suppose there are more similar reports. Nonetheless, I think any scientific approach to study temporary, interval and sound characteristics of KS should include means of objective, reproducible and impersonal instrumental control.
Article A pilot application of Korotkoff sound delay time in evaluat...
I will glad to have a look at your interesting results in the nearest future.
Best regards,
GT
Dear, Naufal,, very interesting question. Amplitude of korotkof sounds and korotkof sounds appearance interval have some correlation with appearance of arterial conditions and aging.. Following article might help you.. Thanks
Thank you for your response, Mr. Emin Grbic , and your article recommendation, Mr. Gennady Taradin and Mr. Biswajit Majumder . I wonder whether disease that make some change in the vessel physical properties would make a significant change in Korotkoff sound physical parameters or not. Therefore, I intended to make a research to compare five Korotkoff phases sound parameters between patient with certain vascular disease and healthy subject. I would be pleased if you could give me some advice for this research, thank you very much.
Good luck Mr. Dziban Naufal with this and other your reaserches!
I'd be happy, if my competence allows, to give you any suggestions and advices when a general project will come into focus.
Best regards,
GT