Long term comparison between single stage Baerveldt and Ahmed glaucoma implants in pediatric glaucoma

In this study, nitrite reduction and methanogenesis in a single-stage upflow anaerobic sludge blanket (UASB) reactor was investigated, using high-strength synthetic domestic wastewater as substrate. To assess long-term effects and evaluate the mechanisms that allow successful nitrite reduction and methanogenesis in a single-stage UASB, sludge was exposed to relatively high nitrite loading rates (315 ± 13 mgNO2−-N/(l.d)), using a chemical oxygen demand (COD) to nitrogen ratio of 18 gCOD/gNO2−-N, and an organic loading rate of 5.4 ± 0.2 gCOD/(l.d). In parallel, the effects of sludge morphology on methanogenesis inhibition were studied by performing short-term batch activity tests at different COD/NO2−-N ratios with anaerobic sludge samples. In long-term tests, denitrification was practically complete and COD removal efficiency did not change significantly after nitrite addition. Furthermore, methane production only decreased by 13%, agreeing with the reducing equivalents requirement for complete NO2− reduction to N2. Apparently, the spatial separation of denitrification and methanogenesis zones inside the UASB reactor allowed nitrite reduction and methanogenesis to occur at the same moment. Batch tests showed that granules seem to protect methanogens from nitrite inhibition, probably due to transport limitations. Combined COD and N removal via nitrite in a single-stage UASB reactor could be a feasible technology to treat high-strength domestic wastewater.

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Chapter-25 Glaucoma Implants in the Treatment of Pediatric Glaucoma

Surgical Techniques in Ophthalmology (Glaucoma Surgery) ◽

10.5005/jp/books/11383_25 ◽

2010 ◽

pp. 176-179

Author(s):

Peter Waard

Keyword(s):

Pediatric Glaucoma ◽

Glaucoma Implants

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Pediatric Glaucoma: A Literature’s Review and Analysis of Surgical Results

BioMed Research International ◽

10.1155/2015/393670 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 10

Author(s):

Gianluca Scuderi ◽

Daniela Iacovello ◽

Federica Pranno ◽

Pasquale Plateroti ◽

Luca Scuderi

Keyword(s):

Success Rates ◽

Older Children ◽

Advantages And Disadvantages ◽

Pediatric Glaucoma ◽

First Choice ◽

Surgical Options ◽

Aphakic Eyes ◽

The Individual

The purpose of this paper is to review the surgical options available for the management of pediatric glaucoma, to evaluate their advantages and disadvantages together with their long-term efficacy, all with the intent to give guidelines to physicians on which elements are to be considered when taking a surgical decision. Currently there is a range of surgical procedures that are being used for the management of pediatric glaucoma. Within these, some are completely new approaches, while others are improvements of the more traditional procedures. Throughout this vast range of surgical options, angle surgery remains the first choice in mild cases and both goniotomy and trabeculotomy have good success rates. Trabeculectomy with or without mitomycin C (MMC) is preferred in refractory cases, in aphakic eyes, and in older children. GDIs have a good success rate in aphakic eyes. Nonpenetrating deep sclerectomy is still rarely used; nevertheless the results of ongoing studies are encouraging. The different clinical situations should always be weighed against the risks associated with the procedures for the individual patients. Glaucomatous progression can occur many years after its stabilization and at any time during the follow-up period; for this reason life-long assessment is necessary.

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Exposure of Midline Cranial Base without a Facial Incision through a Combined Craniofacial-Transfacial Procedure

Operative Neurosurgery ◽

10.1227/01.neu.0000144209.03703.c6 ◽

2005 ◽

Vol 56 (suppl_1) ◽

pp. ONS-28-ONS-35 ◽

Cited By ~ 3

Author(s):

Iman Feiz-Erfan ◽

Patrick P. Han ◽

Robert F. Spetzler ◽

Randall W. Porter ◽

Jeffrey D. Klopfenstein ◽

...

Keyword(s):

Cranial Base ◽

Single Stage ◽

Karnofsky Performance Scale ◽

Bony Defect ◽

Anterior Cranial Base ◽

Scale Scores ◽

Long Term Follow Up ◽

Cerebrospinal Fluid Leaks ◽

Cosmetic Outcomes

Abstract OBJECTIVE: A single-stage combined craniofacial-transfacial approach that exposes the midline cranial base without visible facial incisions is described. METHODS: Between 1992 and 1998, eight patients underwent surgery for five different anterior cranial base pathological findings: four angiofibromas, one mesenchymal chondrosarcoma, one esthesioneuroblastoma, one odontogenic myxoma, and one encephalocele. In all cases, the surgical exposure consisted of a bicoronal scalp incision with a bifrontal craniotomy and fronto-orbitonasal osteotomy, and then a sublabial incision for transmaxillary exposure. RESULTS: Gross total resection was achieved in five cases. The encephalocele was resected with complete reconstruction of the bony defect. Seven patients developed complications, primarily wound infections, cerebrospinal fluid leaks, and anemia. Postoperative Karnofsky Performance Scale scores ranged between 80 and 100 (mean, 92.5). Long-term follow-up information (mean, 56 mo; median, 59.5 mo; range, 5–108 mo) was available for all patients. CONCLUSION: Large anterior cranial base lesions can be resected and excellent cosmetic outcomes can be achieved with a single-stage combined transfacial-craniofacial approach that exposes the entire midline cranial base and requires no facial incisions.

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Results at 10–24 years after single-stage revision arthroplasty of infected total hip arthroplasty in patients under 45 years of age

Hip International ◽

10.1177/1120700019888877 ◽

2019 ◽

pp. 112070001988887 ◽

Cited By ~ 3

Author(s):

Matthias Wolff ◽

Christian Lausmann ◽

Thorsten Gehrke ◽

Akos Zahar ◽

Malte Ohlmeier ◽

...

Keyword(s):

Infection Control ◽

Revision Surgery ◽

Single Stage ◽

Long Term Results ◽

Harris Hip Score ◽

Study Cohort ◽

One Stage ◽

The Mean

Introduction: The management of periprosthetic joint infection (PJI) of the hip is a challenging procedure. One-stage exchange is carried out in specialist centres with comparable infection free survival rates. However, there is a paucity of long-term results of this approach in young patients. Methods: All patients undergoing one-stage exchange due to PJI with a known causative organism ⩽45 years of age with a minimum of 10-year follow-up (mean 15 years; range 10–24 years) were enrolled in this retrospective study. Patients older than 45 years of age or patients with a two-stage procedure were excluded from the study. The primary outcome measure was failure rate with special focus on reinfection at latest follow-up. Failure was defined as revision surgery for infection. Furthermore, functional outcome using the Harris Hip Score was determined initially and at latest follow-up. 26 patients fulfilled the inclusion criteria and were available for final follow-up. Results: The study cohort consists of 16 male and 10 female patients with a mean age of 36.8 years (range 20–45 years) and a mean BMI of 29.8 kg/m2 (range 20.7–40.6 kg/m2). Prior to the single-stage procedure, the patients underwent an average of 3.1 previous surgical interventions (range 1–9). The mean hospital stay after septic revision was 19.7 days (11–33 days). Most infections were caused by Staphylococcus epidermidis ( n = 8, 30.8%), followed by Staph. aureus ( n = 7, 26.9%) and Propionibacterium acnes ( n = 6, 23.1%). At latest follow-up, the overall survival rate was 76.9 %, while infection control could be achieved in 96.2%. At final examination, the mean Harris Hip Score improved from 46.2 to 78.9 (range 18.0–99; SD, 22.6). Conclusions: Single-stage revision surgery for the management of PJI in patients ⩽45 years is a successful treatment option with high infection control, even after long-term follow-up.

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Single-Stage Orbital Socket Reconstruction Using the Oversized Dermis Fat Graft and the 22 mm Silicone Orbital Implant after an Extended Enucleation

Case Reports in Ophthalmological Medicine ◽

10.1155/2018/8954193 ◽

2018 ◽

Vol 2018 ◽

pp. 1-4

Author(s):

Biljana Kuzmanović Elabjer ◽

Mladen Bušić ◽

Daliborka Miletić ◽

Mirjana Bjeloš ◽

Borna Šarić ◽

...

Keyword(s):

Choroidal Melanoma ◽

Single Stage ◽

Long Term Results ◽

Fat Graft ◽

En Bloc ◽

Orbital Implant ◽

Absorbable Sutures ◽

Previously Treated ◽

Socket Reconstruction

We would like to present a surgical technique of orbital socket reconstruction using oversized dermis fat graft and 22 mm silicone orbital implant in a single-stage after extended enucleation in two patients with massive local recurrence of anteriorly located choroidal melanoma previously treated with endoresection. Orbital tissues en bloc were removed leaving conjunctival lining only at the fornices. Simultaneously, the 22 mm silicone sphere was implanted deeply into the orbit and covered with the oversized dermis fat graft of 30 mm in height and 35 mm in length with 20 mm of the fat thickness. The graft was sutured to the residual forniceal conjunctiva with interrupted 6/0 absorbable sutures overlapping conjunctiva with the graft edge for 2 mm to facilitate the epithelization. Epithelization was completed in two months, leaving well-formed fornices with good fitting of the prosthesis. The key point of orbital socket reconstruction after extended enucleation is to restore conjunctival lining prior to volume. Thus, whenever facing a massive volume and conjunctival lining loss, simultaneous insertion of the 22 mm silicone sphere deep into the orbit combined with oversized dermis fat graft is, in our opinion, the method of choice. It proved to be safe and effective with favourable long-term results.

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Vesico-vaginal fistulas

Urologia Journal ◽

10.1177/039156039205900508 ◽

1992 ◽

Vol 59 (5) ◽

pp. 34-37

Author(s):

F. Pagano ◽

A. Meneghini ◽

G. Oliva

Keyword(s):

Urinary Diversion ◽

Single Stage ◽

Technical Details ◽

Transvesical Approach

— Fifty-four patients were treated at the Department of Urology, University of Padova for vesico-vaginal fistulas from May 1978 to June 1992. Twenty-six were operated by suprapubic transvesical approach with no long-term relapse. Twenty-eight patients presented complex vesico-vaginal fistulas: 23 were treated by single-stage transvesical repair. In 5 cases a urinary diversion was performed, ileal in 2 cases, colonic in 3. Only 1 case of relapse was observed (3.5%) in this group, and the patient was successfully re-operated. Authors underline classificative and etiologic factors involved in vesico-vaginal fistulas. Diagnostic and technical details of suprapubic transvesical repair are discussed.

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