scholarly journals ENHANCEMENT OF PALMAR ADVANCEMENT FLAP: A SIMPLE MODIFICATION

2014 ◽  
pp. 1
Author(s):  
Oguz Kayiran ◽  
Ercan Cihandide
Keyword(s):  
Advancement Flap ◽  
Simple Modification

Die Therapie der Analfistel – Wahl zwischen Skylla und Charybdis

2013 ◽  
Vol 70 (7) ◽  
pp. 383-391 ◽  
Author(s):  
Lukas Marti ◽  
Christina Kruse ◽  
Marcel Zadnikar ◽  
Christine Maurus ◽  
Chan-Hi Kim ◽  
...  
Keyword(s):  
Chirurgische Therapie ◽  
Advancement Flap ◽  
Fistula Plug

Die Analfistel, die zunächst meist als akuter Abszess symptomatisch wird, ist die chronische Form derselben Krankheit. Die Fistel äußert sich durch persistierende Sekretion neben dem After und kann die Lebensqualität der Patienten durch langwierige Verläufe massiv einschränken. Die chirurgische Therapie zielt darauf ab, die Erkrankung bleibend ohne Rezidiv zu heilen, ohne dabei die Kontinenz zu schädigen. Dies sind zwei sich teilweise entgegenlaufende Forderungen, weswegen je nach Fistel verschiedene Operationen zum Einsatz kommen. Distale, einfache Fisteln werden gespalten, jedoch darf, um die Kontinenz nicht zu gefährden, nicht zu viel Schließmuskel geopfert werden. Höher gelegene, komplexe Fisteln werden meist mit Entfernung der gesamten Fistel und nachfolgender Schließmuskelnaht (Advancement Flap oder primäre Sphinkterrekonstruktion) behandelt. Neuere Techniken wie z. B. der Fistula Plug, haben eine deutlich höhere Rezidivrate, schonen anderseits die Kontinenz noch mehr und sind deshalb eine Alternative für speziell geeignete Patienten.

Prediktive Faktoren und Follow-up nach plastischem Verschluss von Analfisteln d. Advancement-Flap

2016 ◽  
Vol 54 (08) ◽  
Author(s):  
L Bönicke ◽  
P Ambe ◽  
H Zirngibl ◽  
E Karsten
Keyword(s):  
Advancement Flap

Simple Modification Measurement of Photodegradability of Polymers by using Photo-induced Chemiluminescence Technique

2013 ◽  
Vol 10 (2) ◽  
pp. 51
Author(s):  
Siti Farhana Zakaria ◽  
Keith R Millington
Keyword(s):  
Free Radicals ◽  
Organic Materials ◽  
Oxidative Degradation ◽  
Working Life ◽  
Bimolecular Reaction ◽  
Synthetic Polymers ◽  
Accelerated Weathering ◽  
Simple Modification ◽  
Uv Absorbers ◽  
Irradiation Period

Polymers and organic materials that are exposed to sunlight undergo photooxidation, which leads to deterioration of their physical properties. To allow adequate performance under outdoor conditions, synthetic polymers require additives such as antioxidants and UV absorbers. A major problem with optimising polymer formulations to maximise their working life span is that accelerated weathering tests are empirical. The conditions differ significantly from real weathering situations, and samples require lengthy irradiation period. Degradation may not be apparent in the early stages of exposure, although this is when products such as hydroperoxides are formed which later cause acceleration of oxidation. A simple way of quantifying the number of free radicals presents in organic materials following exposure to light or heat is by measuring chemiluminescence (CL) emission. Most polymers emit CL when they undergo oxidative degradation, and it originates from the bimolecular reaction of macroperoxy radicals which creates an excited carbonyl.

Vacuum Operation for Overloaded Anaerobic Treatment Systems

1989 ◽  
Vol 21 (4-5) ◽  
pp. 87-95
Author(s):  
J. De Santis ◽  
A. A. Friedman
Keyword(s):  
Volatile Fatty Acids ◽  
Loading Rate ◽  
Anaerobic Treatment ◽  
Optimum Operating ◽  
Operating Pressure ◽  
Simple Modification ◽  
Anaerobic Reactors ◽  
Fixed Film ◽  
Solids Retention ◽  
High Concentrations

Overloaded anaerobic treatment systems are characterized by high concentrations of volatile fatty acids and molecular hydrogen and poor conversion of primary substrates to methane. Previous experiments with fixed–film reactors indicated that operation with reduced headspace pressures enhanced anaerobic treatment. For these studies, four suspended culture, anaerobic reactors were operated with headspace pressures maintained between 0.5 and 1.0 atm and a solids retention time of 15 days. For lightly loaded systems (0.4 g SCOD/g VSS-day) vacuum operation provided minor treatment improvements. For shock organic loads, vacuum operation proved to be more stable and to support quicker recovery from upset conditions. Based on these studies and a companion set of bioassay tests, it was concluded that: (a) a loading rate of about 1.0 g SCOD/g VSS-day represents a practical loading limit for successful anaerobic treatment, (b) a headspace pressure of approximately 0.75 atm appears to be an optimum operating pressure for anaerobic systems and (c) simple modification to existing systems may provide relief for organically overloaded systems.

The Use of the V-Y Fasciocutaneous Island Advancement Flap in Reconstructing Postsurgical Defects of the Leg

2001 ◽  
Vol 27 (1) ◽  
pp. 44-46 ◽  
Author(s):  
Mario Dini ◽  
Alessandro Innocenti ◽  
Giulia Lo Russo ◽  
Vittorugo Agostini
Keyword(s):  
Advancement Flap

V-Y advancement flap to correct a perineal defect after an episiotomy dehiscence

2021 ◽  
Author(s):  
Philomène Lenoir ◽  
Marine Lallemant ◽  
Marie Vilchez ◽  
Rajeev Ramanah
Keyword(s):  
Advancement Flap ◽  
Perineal Defect

Surgical correction of severe congenital ptosis using a modified frontalis muscle advancement technique: A single-arm trial

2021 ◽  
pp. 112067212199575
Author(s):  
Lei Zhang ◽  
Mingyu Ren ◽  
Yuqing Yan ◽  
Wenjuan Zhai ◽  
Lihong Yang ◽  
...  
Keyword(s):  
Success Rate ◽  
Advancement Flap ◽  
Orbicularis Muscle ◽  
Congenital Ptosis ◽  
Inferior Margin ◽  
Field Of Vision ◽  
Vertical Incision ◽  
Registration Number ◽  
The Mean

Purpose: To describe our experience with a modified frontal muscle advancement flap to treat patients with severe congenital ptosis. Methods: Analysis of the clinical charts of 154 patients who underwent a modified frontal muscle advancement flap. The FM was exposed by a crease incision. The FM flap was created by deep dissection between the orbicularis muscle and orbital septum from the skin crease incision to the supraorbital margin and subcutaneous dissection from the inferior margin of the eyebrow to 0.5 cm above the eyebrow. No vertical incision was made on the FM flap to ensure an intact flap wide enough to cover the entire upper tarsal plate. Contour, symmetry of height, marginal reflex distance (MRD1), and complications were assessed. Mean follow-up was 10 months. Results: The mean patient age was 7.6 ± 5.6 (range, 2–18) years. The mean MRD1 was 3.2 ± 1.3 mm after the operation. All bilateral cases achieved symmetry and optimal lid contour; 17 unilateral cases were under corrected, with a success rate of 89.0%. Complications such as entropion, exposure keratitis, FM paralysis, frontal hypoesthesia, severe haematoma, and entropion were not observed in our series. Conclusion: A modified frontal muscle advancement flap produced a high success rate with a clear field of vision, mild trauma, and few complications. This technique is relatively simple and should be considered for correcting severe congenital ptosis. Date of registration: 29-03-2020 Trial registration number: ChiCTR2000031364 Registration site: http://www.chictr.org/

Measurements of Loudness Growth in 1/2-Octave Bands for Children and Adults With Normal Hearing

1999 ◽  
Vol 8 (1) ◽  
pp. 40-46 ◽  
Author(s):  
Melisa R. Ellis ◽  
Michael K. Wynne
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Age Groups ◽  
Lower Boundary ◽  
Normal Hearing ◽  
Boundary Values ◽  
Simple Modification ◽  
Point Data ◽  
Loudness Growth

The loudness growth in 1/2-octave bands (LGOB) procedure has been shown previously to provide valid estimates of loudness growth for adults with normal hearing and those with hearing loss (Allen, Hall, & Jeng, 1990), and it has been widely incorporated into fitting strategies for adult hearing aid users by a hearing aid manufacturer. Here, we applied a simple modification of LGOB to children and adults with normal hearing and then compared the loudness growth functions (as obtained from end-point data) between the two age groups. In addition, reliability data obtained within a single session and between test sessions were compared between the two groups. Large differences were observed in the means between the two groups for the lower boundary values, the upper boundary values, and the range between boundaries both within and across all frequencies. The data obtained from children also had greater variance than the adult data. In addition, there was more variability in the data across test sessions for children. Many test-retest differences for children exceeded 10 dB. Adult test-retest differences were generally less than 10 dB. Although the LGOB with the modifications used in this study may be used to measure loudness growth in children, its poor reliability with this age group may limit its clinical use for children with hearing loss. Additional work is needed to explore whether loudness growth measures can be adapted successfully to children and whether these measures contribute worthwhile information for fitting hearing aids to children.

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