Publications by authors named "Ivan Tanev"

A 77-year-old-man with arterial hypertension, diabetes mellitus type II presented at our clinic for a routine ophthalmological exam. He complained of intermittent double vision. The ophthalmic examination revealed paralysis of III (n.

View Article and Find Full Text PDF

Rosacea is a chronic inflammatory dermatosis typically affecting the facial skin but also the eyes. With its chronic course with fluctuating episodes of flashing, redness, papulopustules, and nodules it poses a severe psychologic burden to the affected individuals. In addition to the facial changes, more than half of the patients have ocular involvement ranging from blepharitis and conjunctival hyperemia to more severe ophthalmic damage, and even blindness.

View Article and Find Full Text PDF

Background: Patients with uveitis have a higher risk of developing glaucoma not only because of the disease by itself, but also because of the ongoing corticosteroid therapy. The pathogenesis of uveitic glaucoma is characterized by a complex of biochemical and cellular processes, as well as morphological changes in the trabecular meshwork. Treatment of secondary chronic glaucoma is challenging and often requires different approaches and solutions.

View Article and Find Full Text PDF

Background: Age-related macular degeneration (AMD) is a progressive, degenerative disease of the central retina. AMD is subdivided into "dry" (atrophic), "wet" (exudative), and neovascular (nAMD) forms. In recent years, the concepts about nAMD changed with the development of optical coherence tomography-angiography (OCT-A) and intravitreal anti-VEGF treatment.

View Article and Find Full Text PDF

Since the beginning of the COVID-19 outbreak, attention has gradually moved from the respiratory manifestations of the disease toward its dermatologic aspects. The need for wearing personal protective measures and their cutaneous side effects, detection of related or specific COVID-19 skin eruptions, and the evaluation of certain risk groups of immunosuppressed dermatologic patients have initiated significant discussions about various therapeutic interventions and, in particular, about biologic therapy for psoriasis and for autoinflammatory, orphan, or malignant cutaneous disorders. Autoimmune bullous dermatoses have been of concern due to their chronic course, at times life-threatening prognosis, and the need for prolonged and often aggressive immunomodulatory therapy.

View Article and Find Full Text PDF

Aims: Failure of right ventricular (RV) function worsens outcome in pulmonary hypertension (PH). The adaptation of RV contractility to afterload, the RV-pulmonary artery (PA) coupling, is defined by the ratio of RV end-systolic to PA elastances (Ees/Ea). Using pressure-volume loop (PV-L) technique we aimed to identify an Ees/Ea cut-off predictive for overall survival and to assess hemodynamic and morphologic conditions for adapted RV function in secondary PH due to heart failure with reduced ejection fraction (HFREF).

View Article and Find Full Text PDF

Background: Albumin is a key regulator of fluid distribution within the extracellular space and has several properties beyond its oncotic activity. The accumulating evidence suggests that supplementation of albumin may provide survival advantages only when the insult is severe as in patients with septic shock.

Methods/design: The randomized controlled multicentre study of albumin replacement therapy in septic shock (ARISS) investigates whether the replacement with albumin and the maintenance of its serum levels of at least 30 g/l for 28 days improve survival in patients with septic shock compared to resuscitation and volume maintenance without albumin.

View Article and Find Full Text PDF

Aims: The aim of this study was to validate the tricuspid annular plane systolic excursion/systolic pulmonary artery (PA) pressure (TAPSE/PASP) ratio with the invasive pressure-volume (PV) loop-derived end-systolic right ventricular (RV) elastance/PA elastance (Ees/Ea) ratio in patients with heart failure with reduced ejection fraction (HFREF) and secondary pulmonary hypertension (PH).

Methods And Results: The relationship of TAPSE and TAPSE/PASP with RV-PV loop (single-beat)-derived contractility Ees, afterload Ea, and Ees/Ea was assessed in 110 patients with HFREF with and without secondary PH. The results were compared with other surrogate parameters such as the fractional area change/PASP ratio.

View Article and Find Full Text PDF
Article Synopsis
  • The study reports on the outcomes of implanting a supplementary Scharioth macula lens (SML) in one eye of pseudophakic patients with age-related macular degeneration (AMD).
  • It included 50 patients, all over 55 years old, and showed a significant improvement in near vision (CNVA) after the lens was implanted, with an increase from 0.23 to 0.57 (decimal) within one year.
  • While the procedure was mostly safe, with only one case of postoperative glare, the overall distance vision (CDVA) remained stable, indicating that the SML is effective for improving near vision without adversely affecting distance vision.
View Article and Find Full Text PDF

Humanity has long strived to create microscopic machines for various purposes. Most prominent of them employ nanorobots for medical purposes and procedures, otherwise deemed hard or impossible to perform. However, the main advantage of this kind of machines is also their main drawback-their small size.

View Article and Find Full Text PDF

Background: Right ventricular (RV) dysfunction is recognized as a cardinal prognostic marker in systolic heart failure patients. Conflicting data exist on the interaction of RV function and left ventricular (LV) reverse remodeling after cardiac resynchronization therapy (CRT). This prospective monocentric trial was set up to assess the predictive value of baseline RV function and corresponding RV-pulmonary artery (PA) coupling on LV reverse remodeling after CRT.

View Article and Find Full Text PDF

Background: Interventional closure of the left atrial appendage (LAA) in patients with non-valvular atrial fibrillation, high thromboembolic and bleeding risk or bleeding history is an alternative therapeutic strategy to oral anticoagulation. It is not known if the exclusion of the LAA from the blood circulation affects the left atrial volume (LAV) and consequently its prognostic value or the circulatory performance of the heart in humans.

Methods: We aimed to prospectively assess potential changes in baseline LAV, left ventricular ejection fraction (LVEF), NT-proBNP-level and the covered distance in the 6-min walk-test 6 weeks and 6 months after LAA closure with the WATCHMAN™ device.

View Article and Find Full Text PDF

Introduction: Stochastic damage of the ionizing radiation to both patients and medical staff is a drawback of fluoroscopic guidance during catheter ablation of cardiac arrhythmias. Therefore, emerging zero-fluoroscopy catheter-guidance techniques are of great interest.

Methods And Results: We investigated, in a prospective pilot study, the feasibility and safety of the cryothermal (CA) slow-pathway ablation in patients with symptomatic atrioventricular-nodal-re-entry-tachycardia (AVNRT) using solely intracardiac echocardiography (ICE) for endovascular and endocardial catheter visualization.

View Article and Find Full Text PDF

Background: Closure of the left atrial appendage (LAA) to prevent cardioembolic events is an alternative therapy to oral anticoagulation in patients with non-valvular atrial fibrillation. The LAA is an important source of natriuretic peptides and its exclusion from the circulation may alter the blood level of these hormones, thereby influencing their diagnostic value and clinical effects.

Methods: We aimed to prospectively assess potential changes in mid-regional pro A-type natriuretic peptide (MR-proANP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) levels 6 weeks and 6 months after interventional LAA closure using the WATCHMAN device.

View Article and Find Full Text PDF
Article Synopsis
  • - Aagenaes syndrome, or lymphoedema cholestasis syndrome 1 (LSC1), is an inherited condition marked by liver issues (neonatal cholestasis) and chronic swelling (lymphoedema) mainly in the legs, which can get better with age.
  • - The syndrome is inherited in an autosomal recessive manner, linked to a specific gene on chromosome 15q, particularly in a 6.6 cM region known as LCS1.
  • - Angioid streaks, which are irregular cracks in the eye's membrane, can occur with Aagenaes syndrome and are generally asymptomatic unless they lead to more severe issues. They can also appear in various systemic
View Article and Find Full Text PDF

Purpose: To evaluate corneal endothelial cell density (ECD) and morphology after cataract surgery using coaxial ultrasound (US) phacoemulsification or a recently introduced coaxial nanosecond laser technique.

Setting: Department of Ophthalmology, Medical University of Sofia, Sofia, Bulgaria.

Design: Prospective cohort study.

View Article and Find Full Text PDF

One of the first-line drugs for empirical antibiotic therapy in patients with hospital-acquired infections is meropenem. An often neglected problem in sepsis is that patients with a normal serum creatinine concentration (SCr) might display augmented renal clearance (ARC). Here we describe two cases of sepsis with subtherapeutic exposures with standard meropenem dosing in whom therapy could be optimised by therapeutic drug monitoring (TDM).

View Article and Find Full Text PDF