338 research outputs found
Association between asymptomatic carotid atherosclerosis and degenerative aortic stenosis.
OBJECTIVE:
Degenerative aortic stenosis shows similarities with atherosclerosis. To confirm the hypothesis that aortic stenosis is an "atherosclerosis-like" disease, we investigated the association between degenerative aortic stenosis and atherosclerosis of carotid arteries.
METHODS:
We studied 270 consecutive patients, 135 with degenerative aortic stenosis (trans-aortic peak velocity ≥ 2 m/sec) and other 135 subjects without aortic valve disease. All patients underwent echocardiography and ultrasound scan of the supra-aortic trunks to assess the presence of plaque and/or intima-media thickening (IMT).
RESULTS:
Atherosclerosis of carotid arteries (IMT and plaque) was significantly more frequent in patients with aortic stenosis than in controls (95.5% vs. 66.6%, p < 0.0001). The same result was confirmed as concerns carotid plaques (69.6% vs. 42.2%, p < 0.0001). In addition, there was a significant association between aortic stenosis and degenerative carotid plaque (OR = 3.13; 95% C.I. = 1.90-5.17). Thus the presence of a linear correlation between the trans-aortic peak velocity of the cases and the thickness of the plaques and IMT was evaluated by calculating the coefficient of correlation (R = 0.15 for plaque and R = 0.53 for IMT).
CONCLUSIONS:
The presence of carotid atherosclerosis is associated with degenerative aortic stenosis and the severity of aortic stenosis corresponds to an increase of the thickness of plaque and IMT. This relationship is quite new. Our result strengthens the pathogenetic hypothesis "atherosclerosis-like" of degenerative aortic stenosis and suggest the ultrasound scan as a non invasive method for risk stratification in patient with aortic stenosis, with therapeutic implications especially for higher risk subgroups
High plasma levels of endothelin-1 enhance the predictive value of preclinical atherosclerosis for future cerebrovascular and cardiovascular events: a 20-year prospective study
BACKGROUND AND PURPOSE:
Clinical and experimental evidence suggests that endothelin-1 (Et-1) plays a role in cardiac and vascular disease. In the present study, we investigated the prognostic significance of Et-1 for cerebrovascular and cardiovascular outcome, in a 20-year follow-up.
METHODS:
We studied 82 originally healthy individuals, referred to our Unit of Cardiovascular Prevention, to evaluate the presence of asymptomatic carotid lesions. We subdivided these individuals into two groups, according to the plasma values of Et-1 (respectively ≤ or >2.7 pg/ml). Traditional cardiovascular risk factors were investigated, and by carotid ultrasound examination, we distinguished between normal individuals and those with intima-media thickening or asymptomatic carotid plaque.
RESULTS:
Major cardiac and cerebral events (all-cause death, myocardial infarction, revascularization procedures, fatal and nonfatal stroke) were registered in 41 individuals and significantly more in those with high vs. low Et-1 levels (95 vs. 5%; P < 0.0001). Furthermore, by logistic multivariate regression analysis, we found that among all evaluated baseline clinical and laboratory variables, hypertension [odds ratio (OR): 20.4 (3.3-127), P = 0.001], high Et-1 concentrations [OR: 1.4 (1.0-1.8), P = 0.02] and the presence of intima-media thickness or asymptomatic carotid plaque [OR: 3.7 (1.14-12.1), P = 0.02] were independent predictors of future events. Finally, integrating technical and laboratory data, high levels of Et-1 have defined a high risk of major cardiac and cerebral event and stroke at follow-up, which increased in relation to the progression of carotid atherosclerosis (P < 0.05).
CONCLUSION:
Et-1 plasmatic levels significantly influence the cardiovascular and cerebrovascular risk profile, beyond traditional cardiovascular risk factors and preclinical carotid atherosclerosis
Cardiac involvement in patients with cirrhosis: a focus on clinical features and diagnosis
Cirrhotic heart has been traditionally considered protected from cardiovascular disease, even if a large amount of literature has recently shown that patients affected by chronic liver disease are exposed to cardiovascular events, as well. Since the first recognition of cardiac involvement in cirrhosis, all published studies explain that decompensated cirrhotic patients suffer from haemodynamic changes, currently known as hyperdynamic syndrome, which finally lead to cirrhotic cardiomyopathy. This is defined by the presence of a subclinical systolic dysfunction unmasked under stress conditions, impaired diastolic function and electrophysiological abnormalities, in the absence of any known cardiac disease. In this review, we will discuss the clinical and diagnostic features of this condition, the prevalence of associated comorbidities, echocardiographic, electrocardiographic and cardiac magnetic resonance hallmarks and the possible diagnostic role of serum biomarkers
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