León R Valdivieso

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The urinary enzymes alanine aminopeptidase (AAP; EC and N-acetyl-B-D-glucosaminidase (NAG; EC were measured daily in 35 renal transplant recipients during the early postoperative period. Each peak value of fractional excretion was corrected for its baseline value (CFE). CFE values above normal for both NAG and AAP were more frequently(More)
Concurrent severe carotid and cardiac disease is a challenging situation where staged surgery is probably the most common strategy, although it is still controversial. We report in-hospital and midterm outcome of 30 patients who received carotid stenting and synchronous cardiac surgery. All received carotid stenting under aspirin and regular unfractioned(More)
AIM To assess the results of transcatheter aortic valve implantation (TAVI) using the Medtronic CoreValve prosthesis (Medtronic, Minneapolis, MN), without balloon predilation, in high-risk patients with degenerated severe aortic stenosis. METHODS AND RESULTS Fifty-one consecutive patients who underwent direct TAVI, 98% through a transfemoral approach.(More)
BACKGROUND Concurrent severe carotid and cardiac disease is a challenging situation where staged surgery is probably the most common strategy. However, in patients with an unstable clinical presentation, the best approach is still a matter of debate. The aim of the study was to report in-hospital and midterm outcome in patients who received carotid artery(More)
OBJECT Executive functions are crucial for organizing and integrating cognitive processes. While some studies have assessed the effect of carotid artery stenting (CAS) on cognitive functioning, results have been conflicting. The object of this study was to assess the effect of CAS on cognitive status, with special interest on executive functions, among(More)
OBJECTIVES To report the incidence and predictors of moderate/severe radial artery spasm (RAS) in patients undergoing cardiovascular percutaneous procedures through a transradial approach (TRA) in centers with TRA expertise. BACKGROUND Data regarding the actual rate of clinically meaningful RAS are limited due to difference in study designs and operator(More)
OBJECTIVES We aimed to assess safety and, secondarily, the efficacy of intramyocardial high-dose plasmid-vascular endothelial growth factor (VEGF) 165 (pVEGF165) gene transfer in no-option patients with coronary artery disease (CAD). BACKGROUND Controlled trials of pVEGF165 in CAD have shown little benefit. One possible reason is shortness of dosage. We(More)
We report our experience using transradial access (TRA) for carotid artery stenting (CAS). Eighty-eight patients underwent CAS using a nonfemoral approach, 79 of them by TRA. Carotid artery stenting was performed using standard techniques with a long hydrophilic sheath. Mean age was 69.5 years. A total of 46 patients were symptomatic and 34 were(More)
The renin-angiotensin-aldosterone system (RAAS) in a female patient suffering from acromegaly and severe hypertension was studied and a suppressed plasma renin activity could be found. A catheterisation of both adrenal veins, a bilateral adrenal gammagraphy and an abdominal CT scan confirmed the diagnosis of an aldosterone-producing right adrenal adenoma(More)
A 62-year-old diabetic female was referred to our institution with a 6-month history of pulmonary hypertension and worsening right-sided heart failure. Computed tomography of the chest and pulmonary angiogram revealed a pulmonary artery mass. Due to patient's frail state, palliative kissing stenting to both pulmonary arteries was performed with optimal(More)