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[Usefulness of x-ray parameters in the functional evaluation of patients with nonvalvular cardiopathies]
Insights
In heart disease patients, advanced stages (NYHA classes 3 and 4) show significant changes in cardiac measurements and systolic time intervals (STI). Relative heart volume accurately reflects cardiac condition in non-valvular heart disease.
Area of Science:
- Cardiology
- Medical Imaging
- Physiology
Background:
- Heart diseases impact cardiac dimensions and function.
- Systolic time intervals (STI) and radiologic measurements are key indicators.
- New York Heart Association (NYHA) classification stratifies disease severity.
Purpose of the Study:
- To investigate changes in radiologic cardiac measurements and STI across NYHA functional classes.
- To explore relationships between these parameters in heart disease patients.
- To assess the utility of relative heart volumetry in non-valvular heart diseases.
Main Methods:
- Studied 49 heart disease patients across four NYHA functional classes.
- Compared radiologic cardiac measurements and STI with a control group.
- Analyzed correlations between relative heart volume, left ventricular ejection time (LVET), and pre-ejection period (PEP).
Main Results:
- Significant changes in STI and radiologic measurements were observed only in NYHA functional classes 3 and 4.
- A significant negative correlation was found between relative heart volume and LVET/LVETc.
- A significant positive correlation was noted between relative heart volume and PEP/PEP ratio.
Conclusions:
- Relative heart volumetry is a reliable index for assessing cardiac status in non-valvular heart diseases.
- Advanced heart disease stages (NYHA 3 & 4) exhibit distinct changes in cardiac measurements and STI.
- Correlations highlight the interplay between cardiac volume and systolic function parameters.
Abstract:
In 49 patients suffering of heart diseases we have studied the changes of radiologic cardiac measurements and systolic time intervals (STI) in the four functional classes of the New York Heart Association (NYHA) classification, investigating also the existence of any relationship between these different parameters. Only the patients in functional classes 3rd and 4th showed significant changes in STI and radiologic measurements as compared to the control group. Moreover, a significant negative correlation has been observed between relative heart volume and left ventricular ejection time (LVET) (r = 0.69, P less than 0.001) and LVETc (r = 0.82, P less than 0.001) and a positive correlation between relative heart volume and pre-ejection period (PEP) (r = 0.59, P less than 0.01) and PEP/LVET ratio (r = 0.75, P less than 0.001). These results seem to demonstrate that relative heart volumetry is a fairly accurate index of the cardiac conditions in non valvular heart diseases.