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Investigation regarding the VIth cardiac sound under pathological and normal physiological condition
Insights
A rare VIth cardiac sound was detected in 5% of patients with aortic insufficiency, not in healthy individuals. This finding offers new insights into cardiac diagnostics and vascular conditions.
Area of Science:
- Cardiology
- Medical Instrumentation
- Physiology
Background:
- Limited data exists on the VIth cardiac sound.
- Understanding cardiac sounds aids in diagnosing heart conditions.
Purpose of the Study:
- To investigate the characteristics and prevalence of the VIth cardiac sound.
- To correlate the VIth cardiac sound with specific cardiovascular conditions.
Main Methods:
- Phonocardiogram recorded on four frequency bands.
- Simultaneous EKG and carotid pulse recordings in 532 individuals.
- Utilized a 6-NEK-4 apparatus for data acquisition.
Main Results:
- VIth cardiac sound was absent in healthy subjects.
- Detected in 5% of patients with aortic insufficiency, characterized by low frequency and amplitude.
- Associated with a 50% increase in left ventricle ejection period and a 26% increase in pre-ejection period.
- Not observed in elderly patients with aortic insufficiency and reduced vascular elasticity.
Conclusions:
- The VIth cardiac sound may indicate aortic insufficiency.
- It is linked to altered ventricular dynamics.
- Further research is warranted to elucidate its precise origin and clinical significance.
Abstract:
Starting from the fact that specialty data regarding a VIth cardiac sound, are scarce the paper studies the phonocardiogram recorded on four frequency bands in parallel with a EKG derivation and a carotid pulse in a lot of 532 persons (healthy and sick) using a 6-NEK-4-apparatus. The presence of this sound has not been remarked in healthy persons. In 5% out of the tested sick that presented aortic insufficiency we remarked the presence of a VIth cardiac sound of a low frequency and amplitude, possibly of a vascular nature. In all the patients that exhibited this VIth sound a 50% increase of the left ventricle ejection period as well as a 26% increase of the preejection period was noticed. The presence of this sound in the aged patients with stenosis and aortic insufficiency, exhibiting reductions of the vascular wall elasticity was not remarked.