Publications by authors named "Hefner L"

The current standard treatment of choroidal neovascularisation (CNV) secondary to pathological myopia (PM) is intravitreal injection of VEGF antagonists. We now present our 6-year results after treating patients with CNV secondary to PM with ranibizumab. We retrospectively analysed 15 treatment-naive eyes of 13 patients (10 women, 3 men, mean age 59.

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Anti-VEGF injections are widely used "off-label" for the treatment of choroidal neovascularization secondary to pathological myopia based on data generated by multiple case series with small sample sizes. In this review we have analyzed the results of case series with at least 20 patients and a follow-up of ≥ 12 months. 18 case series were identified in Medline meeting these demands.

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Background: Choroidal neovascularization (CNV) secondary to pathological myopia (PM) is one of the main causes of severe visual impairment in patients younger than 50 years. In this analysis we want to demonstrate the long-term results of Ranibizumab treating CNV secondary to PM.

Patients And Methods: We retrospectively analysed 15 treatment naive eyes of 13 patients (10 women, 3 men, mean age: 61.

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Background: Until now the diagnostic possibilities for choroidal folds were limited to conventional methods like ICG angiography and ultrasound and in many cases additional diagnostic tools like MRI and OCT were necessary. With the introduction of high-resolution OCT new modalities of differential diagnostics are possible.

Methods: During the last year 3 patients with conspicious funduscopic findings were presented in our office.

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Purpose: Choroidal neovascularization (CNV) secondary to pathological myopia (PM) occurs in up to 10 % of PM and the natural course often leads to a considerable deterioration of visual acuity. Treatment options like laser or PDT can stabilize visual acuity. Alternatives like ranibizumab are new treatment options that show very promising results.

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Purpose: The aim of this review was to compare clinical data on the efficacy and complications of heavier-than-water internal tamponades (F6 H8®, Oxane HD®, Densiron 68®) used in eyes with complicated retinal detachments.

Methods: An analysis was made of all case series with at least 10 eyes treated and cited in Medline together with results of 4 own institutional case series.

Results: Short-term internal tamponade with each of the mentioned substances led to successful anatomic results in a relatively high percentage of eyes.

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Background: The aim of this study was to analyse functional results of flexible ranibizumab treatment in exudative age-related macular degeneration (AMD), and to search for parameters with impact on outcome.

Methods: Analysis of a retrospective institutional case series (104 eyes) with a low-threshold re-treatment algorithm and monthly follow-up for 12 months.

Results: Visual acuity (VA) improved at month 3 by +6.

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Purpose: The aim of this study was to analyse the 6-months results of focal laser photocoagulation (LC) applied after previous intravitreal injection of triamcinolone in eyes with non-proliferative diabetic retinopathy and clinically significant diabetic macular edema (DME).

Patients And Methods: 32 eyes (32 patients) with DME were included in this study. The number of laser treatments was: 1 in 14 eyes, 2 in 11, 3 in 4 eyes, 4 in 2 and 5 in 1 eye.

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We administered bevacizumab intravitreally to treat a recurrence of CNV after confocal laser coagulation and photodynamic therapy in a 32-year-old female patient with a single functional eye. Before and after treatment the vision in the affected eye was stable at 1.0.

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Background: Air-gun injuries with localisation of the pellet at the apex of the orbital cavity can cause difficult decisions in diagnostics and therapy, especially if you decide to retain the foreign body.

Methods: We report on a 14-year-old boy who was hit by an air-gun pellet. The foreign body went into the left orbit without damaging the globe or the optic nerve.

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The purpose of this paper is to determine the necessity of a dedicated facial bone/orbital computed tomography (CT) scan for fracture surveillance in patients who have suffered blunt head trauma and whose routine nonenhanced head CT scan is negative. It is based on a retrospective review of 115 patients presenting to the Emergency Department at a level I trauma center after blunt head trauma. Included patients underwent both a nonenhanced head CT scan and a dedicated facial bone or orbit CT.

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Background: Acute deterioration of renal function is an important side-effect of angiotensin-converting enzyme (ACE) inhibitors, especially if accompanied by other nephrotoxic events. Angiotensin II receptor(1) blockers (ARB) are thought to have fewer side-effects on renal perfusion and function. We examined the effects of valsartan (VAL) on kidney function as well as the contribution of the nitric oxide (NO) system in a rat model of ischaemic acute renal failure (ARF).

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Objective: The aims were (1) to measure simultaneously and on a beat to beat basis intracellular calcium concentration ([Ca2+]i) transients and force transients in isolated ferret cardiac trabeculae; (2) to obtain and compare independent estimates of the recirculating fraction of Ca2+ using the [Ca2+]i data and the force data (recirculating fraction is the fraction of activator Ca2+ taken up by the sarcoplasmic reticulum in each beat and, in the steady state twitch, the fraction of activator Ca2+ released by the sarcoplasmic reticulum); and (3) to estimate the amount of Ca2+ that returns to the sarcoplasmic reticulum and the amount that, during steady state contractions, enters the cytosol, presumably from the extracellular compartment, with each beat.

Methods: Eight trabeculae were mounted in the myograph. The servo-controlled muscle length was 98% of the length at which developed force was maximal.

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This communication reports the development of a modified procedure for chemical loading of aequorin in small multicellular cardiac preparations, with special emphasis directed toward the implementation of a new method for computer-controlled low-photon counting and digital processing and analysis of the data to obtain intracellular Ca2+ concentration ([Ca2+]i). In eight ferret right ventricular trabeculae, we measured the mechanical performance and found that, at 1.25 mM extracellular Ca2+ concentration ([Ca2+]o), resting tension, developed tension, and time to peak tension were unchanged by the loading procedure.

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The American Association of Physicists in Medicine, Committee on Training of Radiologists conducted a survey of radiation oncologists requesting information regarding their radiation oncology physics training. General questions were asked of the oncologist regarding their radiation oncology practice such as number of oncologists, number of new patients treated, and the size and type of facility in which the practice is located. The oncologist also responded to questions regarding their educational background.

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The nuclear magnetic resonance (NMR) longitudinal relaxation rate R1 dose-response characteristics of a ferrous-sulphate-doped chemical dosimeter system (Fe MRI) immobilized in a gelatin matrix were explored. Samples containing various concentrations of the FeSO4 dosimeter were irradiated to absorbed doses of 0-150 Gy. R1 relaxation rates were determined by imaging the samples at a field strength of 1.

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Potentiated contractions were evoked with rapid pace pause maneuver in 14 length-clamped ferret papillary muscles paced 12 times/min at 25 degrees C. At 1.25 mM [Ca2+]o the average steady-state force was 2.

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Extent, time course, and underlying mechanisms of the negative inotropic effect of ryanodine were examined in 22 length-clamped ferret right ventricular papillary muscles paced 12/min at 25 degrees C. After 60 minutes of exposure to 5 microM ryanodine a new steady state was attained with developed forces averaging 10-15% of maximum twitch force. Ryanodine does not pharmacologically excise the sarcoplasmic reticulum (SR) in this preparation.

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A modified test of postextrasystolic potentiation achieved with a brief episode of rapid pacing followed by a 6-second pause (RPP maneuver) was used to evoke maximal force in isolated intact ferret right ventricular papillary muscles. Maximal RPP tensions were examined under length-clamped conditions and compared with the steady-state forces obtained when further increases in [Ca2+]o, did not further increase force and to the tensions recorded at the point of saturation of force when similarly length-clamped muscles were subjected to caffeine-induced tetanization. The results show that the calculated maximal twitch tension achieved with RPP is comparable to the 25-35 g/mm2 observed in intact single skeletal muscle fibers.

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