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Published on: December 2, 2014
Ascending aortic pressure-derived indices are associated with the presence and severity of aortic stenosis
Serkan Cay1, Goksel Cagirci, Ramazan Atak
1Department of Cardiology, Yuksek Ihtisas Heart-Education and Research Hospital, Ankara, Turkey. cayserkan@yahoo.com
Insights
Ascending aortic pressure indices, including fractional pulse pressure (FPP) and pulsatility index (PI), are linked to calcific aortic stenosis (AS). Higher FPP and PI levels increase AS risk, suggesting blood pressure
Area of Science:
- Cardiovascular Medicine
- Hemodynamics
- Aortic Stenosis Pathophysiology
Background:
- Atherosclerosis and calcific aortic stenosis (AS) share similar pathophysiological mechanisms.
- Investigating the link between ascending aortic pressure indices and AS hemodynamics is crucial.
Purpose of the Study:
- To examine the association between ascending aortic pressure-derived indices and hemodynamic characteristics in calcific AS.
- To determine if blood pressure plays a role in AS pathogenesis.
Main Methods:
- A study of 90 patients (26 males, 64 females; mean age 64.4 years) with AS and a control group.
- Ascending aortic pressure-derived indices were measured via catheterization in both groups.
- Groups were matched for demographic characteristics.
Main Results:
- Aortic fractional pulse pressure (FPP) and pulsatility index (PI) were significantly higher in patients with AS.
- Mean aortic gradient correlated positively with aortic diastolic pressure, FPP, and PI.
- Elevated FPP and PI levels were independently associated with increased risk of AS.
Conclusions:
- Ascending aortic pressure-derived indices are significantly associated with the presence and severity of calcific AS.
- These findings confirm the involvement of blood pressure in the pathogenesis of AS.
Background:
Almost the same pathophysiological mechanism has been suggested for both atherosclerosis and calcific aortic stenosis (AS). In this study, we examined any association between ascending aortic pressure-derived indices and hemodynamic characteristics of calcific AS.
Methods:
A total of 90 patients were studied (26 males, 64 females; mean age: 64.4 +/- 11.3 years). The study population consisted of two groups: AS and a control group. Both groups were well matched. Ascending aortic pressure-derived indices were obtained from all patients via catheterization.
Results:
Two groups were well matched according to demographic characteristics. Aortic pulse/FPPs (fractional pulse pressure = aortic pulse pressure/ aortic mean pressure), and PI (pulsatility index = aortic pulse pressure/aortic diastolic pressure) were significantly higher in patients with AS than in those without. Mean aortic mean gradient had significant positive correlation with aortic diastolic pressure, FPP and PI. The multiple-adjusted odds ratios of the risk of AS was 4.51 (95% CI 1.63-12.48) and 4.34 (95% CI 1.59-11.88) for the higher aortic FPP and PI levels compared with lower levels, respectively.
Conclusion:
Ascending aortic pressure-derived indices were significantly and independently associated with the presence and severity of calcific AS. This confirms the participation of blood pressure in the pathogenesis of AS.
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