Arthur Pollak

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BACKGROUND Although troponin is considered a specific marker for the diagnosis of acute coronary syndrome (ACS), recent studies have shown troponin elevation in a variety of nonischemic conditions. Our aim was to determine the predictors for the diagnosis of ACS in the presence of an abnormal troponin level. METHODS All patients with abnormal troponin T(More)
The present study was undertaken to compare heart rate variability (HRV) values in patients on maintenance hemodialysis with no evidence of ischemic or hypertensive heart diseases to those of age- and gender-matched healthy individuals and those of patients after renal transplantation. To assess the effects of a common confounding factor, HRV values were(More)
OBJECTIVE Alzheimer's disease (AD) and vascular dementia (VaD) are the main causes of dementia. Postmenopausal estrogen deficiency was suggested as a contributor to cognitive decline; however, replacement therapy failed to prove beneficial in its prevention or therapy. Sequence variants in the estrogen receptor alpha gene (ESR1) and beta gene (ESR2) may(More)
BACKGROUND The pathogenesis of haemodialysis-induced hypotension is multifactorial and may include autonomic nervous system dysfunction. The present study was undertaken to (i) determine heart rate variability (HRV) in chronic haemodialysis patients without and with haemodynamic instability (hypotension-prone) during ultrafiltration and (ii) identify(More)
Thromboembolism is a major complication of long-term central venous catheter, usually associated with catheter or venous occlusion. Intracavitary right atrial thrombosis is currently considered to result from line-tip thrombosis extension. We report three adult patients in whom repeated mechanical trauma to the right atrial wall was probably the main(More)
The Fontan procedure is performed for patients with a hypoplastic right ventricle, and pregnancies following this palliative surgery are likely to increase. We present a parturient with the Fontan physiology who successfully underwent two consecutive caesarean deliveries; the first under general anaesthesia for emergency surgery and the second under(More)
AIMS To investigate the association between sequence variants in the promoter region of the oestrogen receptor-alpha (ER-alpha) gene and the angiographic severity of coronary artery disease (CAD). METHODS AND RESULTS We studied 503 subjects undergoing coronary angiography (mean age 63+/-12 years, 72% men, 28% women). Coronary artery disease extent was(More)
CONTEXT Sequence variants in the estrogen receptor alpha gene (ESR1) may alter the atheroprotective effects of estrogens, and be associated with the severity of coronary artery disease (CAD). OBJECTIVE This study seeks to investigate the association between the ESR1 haplotype created by the c.454-397 T>C and c.454-351 A>G polymorphisms, the length of the(More)
Limited prospective data are available regarding the influence of pacemaker leads on tricuspid valve function. To examine the true incidence of these complications, 35 patients were prospectively examined by two-dimensional and Doppler echocardiography before and after implantation of either a permanent pacemaker or an automatic implantable(More)
OBJECTIVES The most important predictors for failure of the maze procedure are long standing atrial fibrillation (AF), rheumatic heart disease (RHD), and enlarged atria. It is well documented, however, that some patients have recurrence of atrial arrhythmia only late in follow-up. The aims of this study are to assess the effectiveness of the maze procedure(More)