Objectives: Vascular endothelial growth factor (VEGF) is upregulated in vivoin the ischemic human myocardium. Since several polymorphisms have been shown to influence VEGF expression, we evaluated the contribution of such polymorphisms to the clinical outcome of patients after an acute myocardial infarction (AMI). Methods: PCR and restriction fragment length polymorphism analysis was performed to genotype 10 VEGF polymorphisms in 102 patients who had suffered an AMI and in 98 age- and sex-matched healthy individuals. Distribution of these polymorphisms was assessed by logistic regression analysis. Results: No significant differences were found between patients and normal individuals. However, when patients were subdivided into 2 groups based on the development of heart failure after their AMI judged by heart ultrasound measurements (ejection fraction <40%), the distribution of the –634 polymorphism differed significantly (p = 0.016). Specifically, patients with a CC genotype had 7 times higher risk of developing heart failure. Additionally, the co-inheritance of –634 with other VEGF polymorphisms was found to be significant for the development of heart failure between these 2 groups. Conclusions: Our data indicate that the –634 polymorphism and its co-inheritance with genotypes of other VEGF polymorphisms might be considered as risk factors playing a role in the clinical outcome of AMI patients.
The implantation of permanent cardiac pacemakers is a quite common and simple procedure where fluoroscopy is employed in the manipulations required for the successful placement of the pacemaker. • According to the EU directives and legislation, fluoroscopy should be used in such a way so that the radiation dose to the patients is as low as reasonably achievable (ALARA principle).
Pacing from the apex of the right ventricle provokes an increase in the BNP levels regardless of the pacing mode. BNP is probably a very early marker predicting the structural and/or functional heart changes after long-term pacing from the apex of the right ventricle.
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