203 results on '"O'Brien MF"'
Search Results
2. One-stage Fowler-Stephens orchidopexy for impalpable undescended testis
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O’Brien, MF, Hegarty, PK, Healy, C, DeFrietas, D, and Bredin, HC
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- 2004
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3. Early failure of freehand aortic stentless xenograft valves
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O'Brien Mf
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,Medicine ,Surgery ,Cardiology and Cardiovascular Medicine ,business ,Early failure - Published
- 1998
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4. Adolescent idiopathic scoliosis treated with open instrumented anterior spinal fusion: five-year follow-up.
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Tis JE, O'Brien MF, Newton PO, Lenke LG, Clements DH, Harms J, Betz RR, Tis, John E, O'Brien, Michael F, Newton, Peter O, Lenke, Lawrence G, Clements, David H, Harms, Jürgen, and Betz, Randal R
- Abstract
Study Design: A multicenter prospective database was queried for patients who underwent open instrumented anterior spinal fusion (OASF) for treatment of primary thoracic (Lenke 1) adolescent idiopathic scoliosis (AIS).Objectives: To present the intermediate radiographic and pulmonary function testing (PFT) data from patients who underwent OASF using modern, rigid instrumentation.Summary Of Background Data: Anterior spinal fusion is an excellent method to correct the 3-dimensional deformity produced by AIS. Modern instrumentation consisting of stronger metals, unthreaded rods, and dual rod systems should theoretically decrease the incidence of rod breakage, pseudarthrosis, and loss of correction seen in earlier OASF studies. The paucity of intermediate and long-term data prevents surgeons and patients from making an informed decision regarding the true incidence of these complications.Methods: Of 101 potential patients who underwent OASF with a minimum 5-year follow-up, 85 (85%) were studied. Standing radiographs were analyzed before surgery and at first standing erect, 2-year, and 5-year follow-up. PFT data were collected before surgery and at 5 years after surgery.Results: Complete 5-year follow-up was obtained in 85 patients. Five years after surgery, the mean coronal correction was 26 degrees (51%; P < 0.05) and the thoracolumbar/lumbar curve improved 16 degrees (51%). There was a 9-degree (P < 0.001) increase in kyphosis, and there were 9 patients (11%) in whom the C7 plumb line translated >2 cm. There was a 6.7% decrease in predicted FEV1 over the 5-year period, from 75.5% +/- 13% before surgery to 68.8% +/- 2% at 5-year follow-up (P = 0.007); however, there was no significant change in FVC. There were 3 significant adverse events: 1 implant breakage requiring reoperation and 2 cases of progression of the main thoracic curve requiring reoperation.Conclusion: OASF is a reproducible and safe method to treat thoracic AIS. It provides good coronal and sagittal correction of the main thoracic and compensatory thoracolumbar/lumbar curves that is maintained with intermediate term follow-up. In skeletally immature children, this technique can cause an increase in kyphosis beyond normal values, and less correction of kyphosis should be considered during instrumentation. As with any procedure that employs a thoracotomy, pulmonary function is mildly decreased at final follow-up. [ABSTRACT FROM AUTHOR]- Published
- 2010
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5. Pretreatment prostate-specific antigen (PSA) velocity and doubling time are associated with outcome but neither improves prediction of outcome beyond pretreatment PSA alone in patients treated with radical prostatectomy.
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O'Brien MF, Cronin AM, Fearn PA, Smith B, Stasi J, Guillonneau B, Scardino PT, Eastham JA, Vickers AJ, Lilja H, O'Brien, Matthew Frank, Cronin, Angel M, Fearn, Paul A, Smith, Brandon, Stasi, Jason, Guillonneau, Bertrand, Scardino, Peter T, Eastham, James A, Vickers, Andrew J, and Lilja, Hans
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- 2009
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6. Systematic review of pretreatment prostate-specific antigen velocity and doubling time as predictors for prostate cancer.
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Vickers AJ, Savage C, O'Brien MF, Lilja H, Vickers, Andrew J, Savage, Caroline, O'Brien, M Frank, and Lilja, Hans
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- 2009
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7. Long-term prediction of prostate cancer: prostate-specific antigen (PSA) velocity is predictive but does not improve the predictive accuracy of a single PSA measurement 15 years or more before cancer diagnosis in a large, representative, unscreened...
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Ulmert D, Serio AM, O'Brien MF, Becker C, Eastham JA, Scardino PT, Björk T, Berglund G, Vickers AJ, and Lilja H
- Published
- 2008
8. Comparison of the lowest instrumented, stable, and lower end vertebrae in 'single overhang' thoracic adolescent idiopathic scoliosis: anterior versus posterior spinal fusion.
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Kuklo TR, O'Brien MF, Lenke LG, Polly DW, Sucato DS, Richards BS, Lubicky J, Ibrahim K, Kawakami N, King A, and Spinal Deformity Study Group: AIS Section
- Abstract
STUDY DESIGN: A retrospective multicenter study. OBJECTIVE: To investigate the relationship between the lowest instrumented, stable, and lower end vertebrae in patients with 'single overhang' thoracic (main thoracic) curves treated with anterior or posterior spinal fusion. SUMMARY OF BACKGROUND DATA: Previous studies have shown 'saving' fusion levels with anterior spinal fusion, as opposed to posterior spinal fusion; however, to our knowledge, none of these studies evaluated the relative position to the lower end vertebra to compare study groups accurately. For clarification, 'single overhang' includes Lenke 1A and 1B curves. For these thoracic curves, the lumbar curve does not cross the midline. MATERIALS AND METHODS: A retrospective multicenter study of adolescent idiopathic scoliosis was performed to identify specifically patients with 'single overhang' thoracic (Lenke 1A and 1B) curves with more than a 2-year follow-up. To analyze relative fusion levels, the differences were computed as follows: (1) the difference between the vertebra position for the stable vertebra of the main thoracic (MT) curve and the lowest instrumented vertebra, as noted on postoperative radiographs, or [equation: see text] (2) the difference between the vertebra position for the lower end vertebra of the main thoracic (MT) curve and the lowest instrumented vertebra, as noted on postoperative radiographs, or [equation: see text]. RESULTS: A total of 298 'single overhang' thoracic curves (148 Lenke 1A, 150 Lenke 1B) were identified, of which 293 had either an anterior spinal fusion or posterior spinal fusion; 5 patients underwent a combined anterior-posterior spinal fusion. Anterior spinal fusion was performed in 70 patients (23.9%) and posterior spinal fusion in 223 (76.1%). While comparing the lowest instrumented vertebra to the stable vertebra with anterior spinal fusion, the lowest instrumented vertebra was identified either at the level of the stable vertebra or above in 97% of 1A/B curves (P < 0.001). Using posterior spinal fusion techniques, the lowest instrumented vertebra was identified either at the stable vertebra or above in 65% of the 1A/B curves (P < 0.05). CONCLUSIONS: These data confirm that anterior spinal fusion techniques result in a mean shorter fusion of 1.5 vertebral segments/patient when compared to posterior spinal fusion techniques with respect to the position of the lowest instrumented and stable vertebrae for 'single overhang' thoracic (Lenke 1A/B) curves. However, because this is a retrospective multicenter study over 10 years, it represents various posterior spinal fusion techniques that do not include all pedicle screw constructs. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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9. Anterior single rod instrumentation for thoracolumbar adolescent idiopathic scoliosis with and without the use of structural interbody support.
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Lowe TG, Alongi PR, Smith DAB, O'Brien MF, Mitchell SL, Pinteric RJ, Lowe, Thomas G, Alongi, Paul R, Smith, David A B, O'Brien, Michael F, Mitchell, Shari L, and Pinteric, Raymarla J
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- 2003
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10. Analysis of patient and parent assessment of deformity in idiopathic scoliosis using the Walter Reed Visual Assessment Scale.
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Sanders JO, Polly DW JR., Cats-Baril W, Jones J, Lenke LG, O'Brien MF, Richards BS, Sucato DJ, and Spinal Deformity Study Group
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- 2003
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11. Experiences with redo aortic valve surgery.
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O'Brien MF, Harrocks S, Clarke A, Garlick B, Barnett AG, O'Brien, M F, Harrocks, S, Clarke, A, Garlick, B, and Barnett, A G
- Published
- 2002
12. How to do safe sternal reentry and the risk factors of redo cardiac surgery: a 21-year review with zero major cardiac injury.
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O'Brien MF, Harrocks S, Clarke A, Garlick B, Barnett AG, O'Brien, M F, Harrocks, S, Clarke, A, Garlick, B, and Barnett, A G
- Published
- 2002
13. Do consumer infant feeding publications and products available in physicians' offices protect, promote, and support breastfeeding?
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Valaitis RK, Sheeshka JD, and O'Brien MF
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The purpose of this study was to determine if consumer infant feeding publications and products distributed by physicians' offices protect, promote, and support breastfeeding. A total of 127 physician office practices completed a mailed questionnaire that measured the types of print and nonprint materials available and policies and practices regarding these resources. Commercially produced pamphlets were available in 114 (90%) of the offices surveyed, and were twice as likely to be routinely distributed as pamphlets from nonprofit agencies and government. Many publications contained outdated recommendations about breastfeeding; the most accurate publications were available in only 29 (23%) of practices surveyed. Magazines contravening the WHO Code were widely available (91 offices; 72%) and routinely distributed (58 offices; 46%). One hundred one offices (80%) accepted free formula and 48 (38%) routinely distributed it. Few offices had a policy (n = 25; 20%) or criteria (n = 17; 13%) for selecting infant feeding resources. Those with policies were less likely to distribute commercial pamphlets. In the majority of offices surveyed, physicians' offices accepted and routinely distributed publications and products which do not 'protect, promote, and support' breastfeeding. Offices are encouraged to have policies guiding the distribution of infant feeding materials. [ABSTRACT FROM AUTHOR]
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- 1997
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14. A local community's approach to breastfeeding promotion.
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Valaitis R and O'Brien MF
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An understanding of theories of group development and the program planning process are critical to any community group's effective functioning. This paper describes the developmental stages experienced by a multi-agency, multi-disciplinary regional breastfeeding committee. The stages of forming, storming, norming, performing, and adjourning devised by Tuckman and Jensen are clearly evident in the growth of this group and can be useful to any other group. The basis for the group's decision-making regarding tasks and activities are addressed by the three health promotion planning approaches: education, policy development, and environmental support. This paper outlines the steps utilized by the committee to develop a series of breastfeeding promotion factsheets as one of its major activities. [ABSTRACT FROM AUTHOR]
- Published
- 1994
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15. Managed care: Strengthening the consumer voice in managed care: II. Moving NCQA standards from rights to empowerment.
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Sabin JE, O'Brien MF, Daniels N, Sabin, J E, O'Brien, M F, and Daniels, N
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- 2001
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16. Hypereosinophilic heart disease
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Howell J, Dorothy J. Radford, O'Brien Mf, and Cameron J
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Male ,medicine.medical_specialty ,Heart disease ,Endomyocardial fibrosis ,Heart Valve Diseases ,Hemodynamics ,Valvular incompetence ,Eosinophilia ,medicine ,Humans ,cardiovascular diseases ,Ultrasonography ,Heart Failure ,Tricuspid valve ,business.industry ,General Medicine ,Syndrome ,Middle Aged ,medicine.disease ,Endomyocardial Fibrosis ,Surgery ,medicine.anatomical_structure ,cardiovascular system ,Mitral Valve ,Idiopathic hypereosinophilic syndrome ,Tricuspid Valve ,business ,Infiltration (medical) ,Medical therapy - Abstract
A 45-year-old patient with cardiac involvement from the idiopathic hypereosinophilic syndrome suffered from severe congestive cardiac failure with progressive deterioration despite intensive medical therapy. Investigations indicated bilateral ventricular infiltration with endomyocardial fibrosis which had caused severe haemodynamic restriction and bilateral atrioventricular valvular incompetence. Extensive surgery, which included bilateral ventricular endomyomectomy and mitral and tricuspid valve replacements, resulted in a significant improvement for six months.
- Published
- 1985
17. Results of aortic valve replacement
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Clarebrough Jk, H. S. Bray, O'Brien Mf, McDonald Ih, and G. S. Hale
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Adult ,Male ,medicine.medical_specialty ,business.industry ,Anticoagulants ,Mitral Valve Insufficiency ,General Medicine ,Middle Aged ,medicine.disease ,Tricuspid Valve Insufficiency ,Electrocardiography ,Text mining ,Postoperative Complications ,Aortic valve replacement ,Internal medicine ,Heart Valve Prosthesis ,Heart Function Tests ,medicine ,Cardiology ,Humans ,Female ,Mortality ,business ,Aged - Published
- 1966
18. COMPARATIVE ANALYSIS OF AUTOLOGOUS, HOMOLOGOUS AND HETEROLOGOUS VALVES
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O'Brien Mf
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Text mining ,business.industry ,Homologous chromosome ,Heterologous ,General Medicine ,Computational biology ,Biology ,business - Published
- 1972
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19. Thoracic and thoracolumbar kyphosis in adults.
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Macagno AE and O'Brien MF
- Abstract
STUDY DESIGN: Author experience and literature review. OBJECTIVES: To investigate the spectrum of adult kyphosis and to discuss the various surgical and nonsurgical treatment options. SUMMARY OF BACKGROUND DATA: Kyphosis with its various etiologies and associated pathophysiologies has been discussed in the literature for many decades. The nonsurgical treatment primarily consists of symptom reduction via physical therapy and has not changed significantly for decades. The surgical treatment, however, has changed dramatically. A decade ago, most large kyphotic deformities required anterior and posterior procedures. With the advent of numerous posterior osteotomy techniques and pedicle fixation, most of these deformities are now treated via posterior methods only. METHODS: Using literature review and the author's experience, kyphosis and its characteristics will be discussed. Important details pertinent to presurgical planning and execution of surgical will be discussed. Three cases will be presented to illustrate the surgical treatment options for three qualitatively different kyphotic deformities. RESULTS: Flexible kyphotic deformities may respond well to aggressive facetectomies and cantilever corrections. Multisegmental osteotomies may be most appropriate for long sweeping deformities. Fixed, sharply, angulated deformities may respond best to pedicle subtraction osteotomies or vertebral column resections. CONCLUSION: Segmental pedicle screw fixation coupled with one of four posterior osteotomy/resection techniques can be used to address most sagittal plain deformities. Careful application of these techniques is important. Smith-Petersen and Ponte osteotomies are most appropriate for long sweeping deformities with mobile anterior columns. Pedicle subtraction osteotomies and vertebral column resections are most appropriate for fixed, sharply angulated spinal deformities. The successful application of these techniques is dependent on accurate preoperative evaluation of the structural properties of the kyphosis and meticulous execution of the surgical technique. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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20. The genome sequence of the red-crested pochard, Netta rufina (Pallas, 1773).
- Author
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O'Brien MF and Lopez Colom R
- Abstract
We present a genome assembly from a female specimen of Netta rufina (the red-crested pochard; Chordata; Aves; Anseriformes; Anatidae). The genome sequence has a total length of 1,167.00 megabases. Most of the assembly (98.76%) is scaffolded into 42 chromosomal pseudomolecules, including the Z and W sex chromosomes. The mitochondrial genome has also been assembled and is 16.62 kilobases in length., Competing Interests: No competing interests were disclosed., (Copyright: © 2024 O’Brien MF et al.)
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- 2024
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21. Spatial and temporal variation in the prevalence of illegal lead shot in reared and wild mallards harvested in England.
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Strong EA, Crowley SL, Newth JL, O'Brien MF, Colom RL, Davis SA, Cromie RL, Bearhop S, and McDonald RA
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The use of lead shotgun ammunition for shooting wildfowl has been restricted in England since 1999, but surveys finding lead shot in harvested birds show compliance with regulations has been low. Following the announcement in 2020 of a voluntary transition from lead to non-lead shot by UK shooting organizations, we investigated spatiotemporal variation in the composition of ammunition used for shooting mallards Anas platyrhynchos. We collected 176 harvested mallards during the 2021/22 shooting season and analyzed recent shot extracted from carcasses to determine shot composition. Using a separate collection of ducks of known provenance, we used stable isotope analysis as a means of differentiating captive-reared from wild mallards. This allowed us to understand how compliance might vary between driven game shooters, characterized by shooting birds that are flushed over a stationary line of shooters, and who primarily harvest captive-reared and released ducks, and wild duck shooters. Of 133 mallards containing recent shot, 92 (69%) had been illegally shot with lead. Analysis of this and five comparable surveys between 2001 and 2019 indicates regional and temporal variation in lead shot presence in England. In the North West and West Midlands, the likelihood of mallards containing lead shot decreased significantly over time, but no other regions showed significant changes. The use of non-lead shot types varied over time, with increases in steel shot use approximately matched by declines in bismuth shot. Mallards likely to be reared were more likely to have been shot with lead (75%) than those likely to be wild (48%). This suggests the use of lead shot is more frequent among driven game shooters than wild duck shooters. In England in 2021/22, most mallards continued to be shot with lead, suggesting that neither legislation nor voluntary approaches have been effective in substantially reducing illegal use of lead shot., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
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22. The genome sequence of the European harvest mouse, Micromys minutus (Pallas, 1771).
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O'Brien MF and Lopez Colom R
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We present a genome assembly from an individual female Micromys minutus (the European harvest mouse; Chordata; Mammalia; Rodentia; Muridae). The genome sequence spans 2,651.80 megabases. Most of the assembly is scaffolded into 34 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial genome has also been assembled and is 16.24 kilobases in length., Competing Interests: No competing interests were disclosed., (Copyright: © 2024 O'Brien MF et al.)
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- 2024
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23. Binocular vision and foraging in ducks, geese and swans (Anatidae).
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Cantlay JC, Martin GR, McClelland SC, Potier S, O'Brien MF, Fernández-Juricic E, Bond AL, and Portugal SJ
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- Animals, Geese, Vision, Binocular, Phylogeny, Ducks, Anseriformes
- Abstract
Wide variation in visual field configuration across avian species is hypothesized to be driven primarily by foraging ecology and predator detection. While some studies of selected taxa have identified relationships between foraging ecology and binocular field characteristics in particular species, few have accounted for the relevance of shared ancestry. We conducted a large-scale, comparative analysis across 39 Anatidae species to investigate the relationship between the foraging ecology traits of diet or behaviour and binocular field parameters, while controlling for phylogeny. We used phylogenetic models to examine correlations between traits and binocular field characteristics, using unidimensional and morphometric approaches. We found that foraging behaviour influenced three parameters of binocular field size: maximum binocular field width, vertical binocular field extent, and angular separation between the eye-bill projection and the direction of maximum binocular field width. Foraging behaviour and body mass each influenced two descriptors of binocular field shape. Phylogenetic relatedness had minimal influence on binocular field size and shape, apart from vertical binocular field extent. Binocular field differences are associated with specific foraging behaviours, as related to the perceptual challenges of obtaining different food items from aquatic and terrestrial environments.
- Published
- 2023
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24. Diseases of Gastropoda.
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O'Brien MF and Pellett S
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- Animals, Host-Parasite Interactions genetics, Host-Parasite Interactions immunology, Host-Pathogen Interactions genetics, Host-Pathogen Interactions immunology, Animal Diseases etiology, Disease Susceptibility immunology, Gastropoda
- Abstract
Gastropods (class Gastropoda) form the largest of the classes in the phylum Mollusca and inhabit terrestrial, fresh water and marine environments. A large number of these species are of major conservation importance and are an essential component of ecosystems. Gastropods may be deemed as pests, having a negative impact in horticulture and agriculture, whereas others may be used as a food source for human consumption and therefore are beneficial. Gastropods are susceptible to primary diseases and also act as intermediate hosts for diseases which affect other animals, including humans. The diseases described include two that are notifiable to the World Organisation for Animal Health (OIE): Xenohaliotis californiensis and Abalone viral ganglioneuritis caused by Haliotid herpesvirus-1 (HaHV-1). Research into the diseases of gastropods has often focused on those species that act as intermediate disease hosts, those that are used in research or those cultured for food. In this paper we review the viral, bacterial, fungal, parasitic and miscellaneous conditions that have been reported in gastropods and mention some of the factors that appear to predispose them to disease. The pathogenicity of a number of these conditions has not been fully ascertained and more research is needed into specifying both the etiological agent and significance in some of the diseases reported., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 O’Brien and Pellett.)
- Published
- 2022
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25. The Predictive Ability of Pre-Operative Magnetic Resonance Imaging to Detect Pathological Outcomes in Prostate Cancer
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Nason GJ, Selvarajah L, O’Connor EM, O’Kelly J, Considine SW, Moss B, MacMahon D, Heneghan J, Meyer N, Buckley J, O’Regan K, and O’Brien MF
- Abstract
Aims Accurate preoperative knowledge of tumour stage is important in preoperative planning at radical prostatectomy (RP). The aim of this study was to assess the predictive ability of multiparametric MRI for detecting pathological outcomes. Methods A retrospective review was performed of all patients who underwent RP over a 4 year period. Results Preoperative MRI was reported as showing T3 or T4 disease in 26(17.9%) out of 145 patients undergoing RP. Of these, 10(6.9%) had ECE (extra-capsular extension) and 1(0.7%) had SVI (seminal vesicle invasion) on final histology. The sensitivity and specificity of MRI for detecting ECE were 27.3% and 87.6%, respectively. The sensitivity and specificity of MRI for detecting SVI were 11.1% and 97.8%, respectively. The positive predictive values for determining ECE and SVI were 45.5% and 25%, respectively and negative predictive values were 75.9% and 94.4%. Conclusion MRI has good specificity but poor and heterogeneous sensitivity for predicting T3 disease in RP specimen., Competing Interests: There are no conflicts of interest to report.
- Published
- 2018
26. Adaptation of the animal welfare assessment grid (AWAG) for monitoring animal welfare in zoological collections.
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Justice WSM, O'Brien MF, Szyszka O, Shotton J, Gilmour JEM, Riordan P, and Wolfensohn S
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- Animals, Population Surveillance methods, United Kingdom, Animal Welfare standards, Animals, Zoo
- Abstract
Animal welfare monitoring is an essential part of zoo management and a legal requirement in many countries. Historically, a variety of welfare audits have been proposed to assist zoo managers. Unfortunately, there are a number of issues with these assessments, including lack of species information, validated tests and the overall complexity of these audits which make them difficult to implement in practice. The animal welfare assessment grid (AWAG) has previously been proposed as an animal welfare monitoring tool for animals used in research programmes. This computer-based system was successfully adapted for use in a zoo setting with two taxonomic groups: primates and birds. This tool is simple to use and provides continuous monitoring based on cumulative lifetime assessment. It is suggested as an alternative, practical method for welfare monitoring in zoos., (British Veterinary Association.)
- Published
- 2017
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27. Ireland's contribution to urology and nephrology research in the new millennium: a bibliometric analysis.
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O'Connor EM, Nason GJ, and O'Brien MF
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- Bibliometrics, Humans, Ireland, Journal Impact Factor, PubMed, Retrospective Studies, Biomedical Research statistics & numerical data, Nephrology, Publications statistics & numerical data, Urology
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Introduction: Bibliometrics is the statistical analysis of written publications. Bibliometric analyses have been performed across a range of biomedical disciplines. The aim of this study was to provide a comprehensive qualitative and quantitative analysis of Irish urology and nephrology research and to analyse how this compares internationally., Methods: We performed a retrospective bibliometric analysis of the top 20 ranking journals in the field of "Urology and Nephrology" based on their 5 years impact factor, as obtained from the ISI Journal Citation Report database over the 15-year study period, 2000-2015. Utilising the Pubmed database, a search phrase was constructed using country of affiliation, year of publication and journal title. The abstracts of the Irish publications identified were analysed for their institution of origin, article theme and content., Results: A total of 67,740 article abstracts were analysed over the 15 years study period. As anticipated, the USA accounted for the largest number of publications by a country [28,206 (41.64 % of all articles)]. Ireland contributed 347 articles in total (0.51 % of all articles); however, ranking according to population per million was 13th worldwide. Ireland's contribution to urology and nephrology research was highest in the BJUI-British Journal of Urology International [76 articles (21.90 % of Irish total)]., Conclusion: We believe this study to be the largest bibliometric analysis in the field of urology and nephrology internationally. This study provides a novel overview of the current Irish urology- and nephrology-related research, and examines how our results compare within the international community.
- Published
- 2017
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28. Tracking the amphibian pathogens Batrachochytrium dendrobatidis and Batrachochytrium salamandrivorans using a highly specific monoclonal antibody and lateral-flow technology.
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Dillon MJ, Bowkett AE, Bungard MJ, Beckman KM, O'Brien MF, Bates K, Fisher MC, Stevens JR, and Thornton CR
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- Animals, Antibodies, Fungal immunology, Antibodies, Monoclonal immunology, Immunoglobulin M immunology, Mycoses diagnosis, Mycoses microbiology, Antigens, Fungal analysis, Chromatography, Affinity methods, Chytridiomycota isolation & purification, Diagnostic Tests, Routine methods, Mycoses veterinary, Urodela microbiology, Veterinary Medicine methods
- Abstract
The fungus Batrachochytrium dendrobatidis (Bd) causes chytridiomycosis, a lethal epizootic disease of amphibians. Rapid identification of the pathogen and biosecurity is essential to prevent its spread, but current laboratory-based tests are time-consuming and require specialist equipment. Here, we describe the generation of an IgM monoclonal antibody (mAb), 5C4, specific to Bd as well as the related salamander and newt pathogen Batrachochytrium salamandrivorans (Bsal). The mAb, which binds to a glycoprotein antigen present on the surface of zoospores, sporangia and zoosporangia, was used to develop a lateral-flow assay (LFA) for rapid (15 min) detection of the pathogens. The LFA detects known lineages of Bd and also Bsal, as well as the closely related fungus Homolaphlyctis polyrhiza, but does not detect a wide range of related and unrelated fungi and oomycetes likely to be present in amphibian habitats. When combined with a simple swabbing procedure, the LFA was 100% accurate in detecting the water-soluble 5C4 antigen present in skin, foot and pelvic samples from frogs, newts and salamanders naturally infected with Bd or Bsal. Our results demonstrate the potential of the portable LFA as a rapid qualitative assay for tracking these amphibian pathogens and as an adjunct test to nucleic acid-based detection methods., (© 2016 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology.)
- Published
- 2017
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29. The impact of day of surgery on the length of stay for major urological procedures.
- Author
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Nason GJ, O'Connor EM, O'Neill C, Izzeldin O, Considine SW, and O'Brien MF
- Abstract
Introduction: Surgery performed later in the week has been associated with longer length of stay (LOS). The aim of this study was to assess if the day of the surgery impacted the LOS for two major urological procedures in a tertiary referral university teaching hospital., Methods: A retrospective review was performed of two major urological procedures consecutively performed by a single surgeon in our unit from March 2012 to December 2015. Patient demographics, histopathological characteristics, operative details, and LOS were obtained from the patients' medical records. Procedures performed on Monday or Tuesday were defined as early in the week and procedures performed on Wednesday, Thursday, or Friday were defined as late in the week., Results: During the study period, 140 open radical prostatectomy (ORP) and 42 open partial nephrectomy (OPN) procedures were performed. There was a significant difference in median LOS for major urological procedures performed early in the week compared to late in the week (3 [3-4] days vs. 4 [4-5] days; p= 0.0001). There was a significant difference in median LOS for ORP performed early in the week compared to late in the week (3 [3-4] days vs. 4 [4-5] days; p= 0.0004). There was a similar significant difference in OPN performed early in the week compared to late in the week (4 [3-5.5] days vs. 5 [4-5] days; p= 0.029)., Conclusions: The day of surgery impacts LOS for major urological procedures. Major procedures should be performed early in the week, when it is feasible to facilitate prompt safe discharge and better use of hospital resources.
- Published
- 2016
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30. Analysis of an unexplored group of sagittal deformity patients: low pelvic tilt despite positive sagittal malalignment.
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Ferrero E, Vira S, Ames CP, Kebaish K, Obeid I, O'Brien MF, Gupta MC, Boachie-Adjei O, Smith JS, Mundis GM, Challier V, Protopsaltis TS, Schwab FJ, and Lafage V
- Subjects
- Aged, Female, Humans, Male, Middle Aged, Radiography, Retrospective Studies, Pelvis physiopathology, Posture physiology, Spinal Curvatures diagnostic imaging, Spinal Curvatures epidemiology, Spinal Curvatures physiopathology, Spinal Curvatures surgery
- Abstract
Purpose: In adult spinal deformity (ASD), patients increase pelvic tilt (PT) to maintain standing alignment. Previously, ASD patients with low PT and high disability were described. This study investigates this unusual population in terms of demographic, radiographic, and clinical features after three-column osteotomy (3CO)., Methods: In this multicenter retrospective study, ASD patients underwent single lumbar 3CO. Since PT is proportional to pelvic incidence (PI), the low PT group (LowPT) was defined as having a baseline (BL) PT/PI <25th percentile. HRQOL and full spine x-rays were analyzed at BL and 1 year. LowPT patients were compared to those with high PT/PI (HighPT) in a matched range of T1 pelvic angle., Results: LowPT group had PT/PI <0.4 (n = 31). High disability was reported at baseline for both groups with significant improvement postoperatively, but without difference between groups. LowPT had significantly smaller lack lumbar lordosis but larger SVA, T1 spinopelvic inclination. Postoperatively, there were improvements in all sagittal modifiers except PT in LowPT. 33 % of LowPT had an increase in PT (>5°) postoperatively. This subset had more deformity at baseline, achieving good T1SPi postoperative correction but without achieving the SRS-Schwab target SVA at 1 year., Conclusion: LowPT group had high levels of disability. After 3CO surgery, low PT patients experience only partial improvements in sagittal vertical axis (SVA) and 33 % of the group increased their PT. Further work is necessary to determine optimal realignment approaches for this unusual set of patients. It is unclear if neuromuscular pathology plays a role in the setting of high SVA without pelvic retroversion.
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- 2016
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31. Comprehension and Use of Nutrition Facts Tables among Adolescents and Young Adults in Canada.
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Hobin E, Shen-Tu G, Sacco J, White C, Bowman C, Sheeshka J, Mcvey G, O'Brien MF, Vanderlee L, and Hammond D
- Subjects
- Adolescent, Canada, Dietary Fats, Energy Intake, Evaluation Studies as Topic, Female, Health Behavior, Humans, Male, Serving Size, Sodium, Dietary, Surveys and Questionnaires, Young Adult, Choice Behavior, Food Labeling, Food Preferences, Health Knowledge, Attitudes, Practice
- Abstract
Purpose: Limited evidence exists on the comprehension and use of Nutrition Facts tables (NFt) among adolescents and young adults. This study provides an account of how young people engage with, understand, and apply nutrition information on the current and modified versions of the NFt to compare and choose foods., Methods: Participants aged 16-24 years (n = 26) were asked to "think aloud" while viewing either the current or 1 of 5 modified NFts and completing a behavioural task. The task included a questionnaire with 9 functional items requiring participants to define, compare, interpret, and manipulate serving size and percentage daily value (%DV) information on NFts. Semi-structured interviews were conducted to further probe thought processes and difficulties experienced in completing the task., Results: Equal serving sizes on NFts improved ability to accurately compare nutrition information between products. Most participants could define %DV and believed it can be used to compare foods, yet some confusion persisted when interpreting %DVs and manipulating serving-size information on NFts. Where serving sizes were unequal, mathematical errors were often responsible for incorrect responses., Conclusions: Results reinforce the need for equal serving sizes on NFts of similar products and highlight young Canadians' confusion when using nutrition information on NFts.
- Published
- 2016
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32. ASSESSMENT OF THE RATES OF INJURY AND MORTALITY IN WATERFOWL CAPTURED WITH FIVE METHODS OF CAPTURE AND TECHNIQUES FOR MINIMIZING RISKS.
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O'Brien MF, Lee R, Cromie R, and Brown MJ
- Subjects
- Animals, Animals, Wild physiology, Anseriformes physiology, Bird Diseases mortality, Bird Diseases prevention & control, Birds injuries, Birds physiology, Ducks injuries, Ducks physiology, Geese injuries, Geese physiology, Handling, Psychological, Humans, Protective Clothing, Wounds and Injuries mortality, Wounds and Injuries prevention & control, Wounds and Injuries veterinary, Zoonoses prevention & control, Animals, Wild injuries, Anseriformes injuries, Risk Reduction Behavior
- Abstract
Swan pipes, duck decoys, cage traps, cannon netting, and roundups are widely used to capture waterfowl in order to monitor populations. These methods are often regulated in countries with national ringing or banding programs and are considered to be safe, and thus justifiable given the benefits to conservation. However, few published studies have addressed how frequently injuries and mortalities occur, or the nature of any injuries. In the present study, rates of mortality and injury during captures with the use of these methods carried out by the Wildfowl & Wetlands Trust as part of conservation programs were assessed. The total rate of injury (including mild dermal abrasions) was 0.42% across all species groups, whereas total mortality was 0.1% across all capture methods. Incidence of injury varied among species groups (ducks, geese, swans, and rails), with some, for example, dabbling ducks, at greater risk than others. We also describe techniques used before, during, and after a capture to reduce stress and injury in captured waterfowl. Projects using these or other capture methods should monitor and publish their performance to allow sharing of experience and to reduce risks further.
- Published
- 2016
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33. Aetiology, epidemiology and management strategies for blunt scrotal trauma.
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Dalton DM, Davis NF, O'Neill DC, Brady CM, Kiely EA, and O'Brien MF
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- Adolescent, Adult, Aged, Child, Humans, Iceland epidemiology, Incidence, Male, Middle Aged, Prognosis, Retrospective Studies, Young Adult, Diagnostic Imaging methods, Disease Management, Emergency Service, Hospital, Practice Guidelines as Topic, Scrotum injuries, Wounds, Nonpenetrating epidemiology, Wounds, Nonpenetrating etiology, Wounds, Nonpenetrating therapy
- Abstract
Objectives: To describe our experience of all patients presenting to a tertiary referral centre over a 3 year time period with blunt scrotal trauma and to describe a methodical approach for managing this group of patients., Methods: A retrospective analysis was performed on all patients presenting to the Emergency Department (ED) of a level 1 trauma centre with blunt scrotal trauma from 2010 to 2013 inclusive. Inclusion criteria included a recent history of blunt scrotal trauma with associated pain and/or swelling of the affected testis on clinical examination., Results: Twenty-seven male patients with a median age of 19 (range 8-65) years were included and all but 1 patient underwent scrotal ultrasonography upon presentation. Sixteen patients (59%) presented with scrotal trauma secondary to a sports related injury. Fifteen patients were managed conservatively and of the 12 who underwent urgent exploration 9 had a testicular rupture, including 1 who had an emergency orchidectomy due to a completely shattered testis. Four patients had >30% of the testis replaced by necrotic tissue/haematoma; of which 2 ultimately underwent orchidectomy and insertion of testicular prosthesis., Conclusion: Our findings demonstrate that the necessity for scrotal protection in sports that predispose to scrotal trauma should be reviewed. We also demonstrate the importance of scrotal ultrasonography for determining an appropriate management strategy (i.e., conservative versus surgical treatment) in this young patient cohort., (Copyright © 2014 Royal College of Surgeons of Edinburgh (Scottish charity number SC005317) and Royal College of Surgeons in Ireland. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2016
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34. Long-term survival rates after resection for locally advanced kidney cancer: Memorial Sloan Kettering Cancer Center 1989 to 2012 experience.
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Bazzi WM, Sjoberg DD, Feuerstein MA, Maschino A, Verma S, Bernstein M, O'Brien MF, Jang T, Lowrance W, Motzer RJ, and Russo P
- Subjects
- Adrenal Gland Neoplasms pathology, Adrenal Gland Neoplasms surgery, Adrenalectomy, Carcinoma, Renal Cell pathology, Female, Humans, Kidney Neoplasms pathology, Lymph Node Excision, Lymphatic Metastasis, Male, Middle Aged, Neoplasm Invasiveness, Neoplasm Staging, Retrospective Studies, Survival Rate, Time Factors, Carcinoma, Renal Cell mortality, Carcinoma, Renal Cell surgery, Kidney Neoplasms mortality, Kidney Neoplasms surgery, Nephrectomy
- Abstract
Purpose: We analyzed the 23-year Memorial Sloan Kettering Cancer Center experience with surgical resection, and concurrent adrenalectomy and lymphadenectomy for locally advanced nonmetastatic renal cell carcinoma., Materials and Methods: We retrospectively reviewed the records of 802 patients who underwent nephrectomy with or without concurrent adrenalectomy or lymphadenectomy for locally advanced renal cell carcinoma, defined as stage T3 or greater and M0. Patients who received adjuvant treatment within 3 months of surgery or had fewer than 3 months of followup or bilateral renal masses at presentation were excluded from analysis. Five and 10-year progression-free and overall survival was estimated by the Kaplan-Meier method. Differences between groups were analyzed by the log rank test., Results: A total of 596 (74%) and 206 patients (26%) underwent radical and partial nephrectomy, respectively. Renal cell carcinoma progressed in 189 patients and 104 died of the disease. Median followup in patients without progression was 4.6 years. Symptoms at presentation, ASA(®) classification, tumor stage, histological subtype, grade and lymph node status were significantly associated with progression-free and overall survival. On multivariate analysis adrenalectomy use decreased with time but lymphadenectomy use increased (OR 0.82 vs 1.16 per year). Larger tumors were associated with a higher likelihood of concurrent adrenalectomy and lymphadenectomy., Conclusions: In our series of patients with locally advanced nonmetastatic renal cell carcinoma survival was favorable in those in good health who were asymptomatic at presentation with T3 tumors and negative lymph nodes. Further, there has been a trend toward more selective use of adrenalectomy and increased use of lymphadenectomy., (Copyright © 2015 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2015
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35. Attitudes among junior doctors towards improving the transurethral catheterisation process.
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Davis NF, Mooney RO, O'Brien MF, and Walsh MT
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- Data Collection, Humans, Incidence, Ireland, Male, Medical Staff, Hospital education, Middle Aged, Attitude of Health Personnel, Medical Staff, Hospital statistics & numerical data, Urethra, Urinary Catheterization methods
- Abstract
Objectives: To evaluate the subjective opinions of junior doctors on their adequacy of training and confidence levels for performing transurethral catheterisation (TUC) and to investigate their subjective interest in a 'safety mechanism' that would eliminate the potential for urethral trauma during TUC., Methods: An anonymous online survey was emailed to all interns that had a documented email address on the Royal College of Surgeons Ireland registry (2012-2013). The survey consisted of eight questions pertaining to TUC of male patients., Results: The survey was delivered to 252 email addresses and the response rate was 52% (130/252). The vast majority (99%; n = 128) of interns felt confident inserting a transurethral catheter independently and 73% (n = 95) subjectively received appropriate training for catheterising male patients. The incidence of trauma after mistakenly inflating the catheter's anchoring balloon in the urethra was 3% (n = 4). The majority (90%; n = 116) of respondents were interested in a safety mechanism for preventing urethral trauma and 71% (n = 92) felt that a safety mechanism for urethral trauma prevention should be compulsory for all transurethral catheterisation among male patients., Conclusion: Despite pre-emptive training programmes, it appears that iatrogenic urethral trauma secondary to TUC remains a persistent morbidity in healthcare settings. Designing a safer transurethral catheter may be necessary to eliminate the risk of unnecessary urethral trauma in patients.
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- 2015
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36. Emerging disease in UK amphibians.
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Cunningham AA, Beckmann K, Perkins M, Fitzpatrick L, Cromie R, Redbond J, O'Brien MF, Ghosh P, Shelton J, and Fisher MC
- Subjects
- Animals, Chytridiomycota classification, Communicable Diseases, Emerging epidemiology, Communicable Diseases, Emerging microbiology, Dermatomycoses epidemiology, Dermatomycoses microbiology, United Kingdom epidemiology, Amphibians microbiology, Chytridiomycota isolation & purification, Communicable Diseases, Emerging veterinary, Dermatomycoses veterinary, Sentinel Surveillance veterinary
- Published
- 2015
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37. Nutritional quality of food items on fast-food 'kids' menus': comparisons across countries and companies.
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Hobin E, White C, Li Y, Chiu M, O'Brien MF, and Hammond D
- Subjects
- Australia, Canada, Child, Dietary Fats administration & dosage, Dietary Fats analysis, Energy Intake, Fast Foods economics, Guideline Adherence, Humans, Internationality, Lunch, New Zealand, Nutrition Policy, Nutritive Value, Sodium, Dietary administration & dosage, Sodium, Dietary analysis, United Kingdom, United States, Child Nutritional Physiological Phenomena, Fast Foods analysis, Food Labeling, Meals, Restaurants
- Abstract
Objective: To compare energy (calories), total and saturated fats, and Na levels for 'kids' menu' food items offered by four leading multinational fast-food chains across five countries., Design: A content analysis was used to create a profile of the nutritional content of food items on kids' menus available for lunch and dinner in four leading fast-food chains in Australia, Canada, New Zealand, the UK and the USA., Setting: Food items from kids' menus were included from four fast-food companies: Burger King, Kentucky Fried Chicken (KFC), McDonald's and Subway. These fast-food chains were selected because they are among the top ten largest multinational fast-food chains for sales in 2010, operate in high-income English-speaking countries, and have a specific section of their restaurant menus labelled 'kids' menus'., Results: The results by country indicate that kids' menu foods contain less energy (fewer calories) in restaurants in the USA and lower Na in restaurants in the UK. The results across companies suggest that kids' menu foods offered at Subway restaurants are lower in total fat than food items offered at Burger King and KFC, and food items offered at KFC are lower in saturated fat than items offered at Burger King., Conclusions: Although the reasons for the variation in the nutritional quality of foods on kids' menus are not clear, it is likely that fast-food companies could substantially improve the nutritional quality of their kids' menu food products, translating to large gains for population health.
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- 2014
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38. Spondylolysis outcomes in adolescents after direct screw repair of the pars interarticularis.
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Snyder LA, Shufflebarger H, O'Brien MF, Thind H, Theodore N, and Kakarla UK
- Subjects
- Adolescent, Adult, Bone Morphogenetic Protein 2 therapeutic use, Bone Transplantation, Braces, Child, Female, Humans, Ilium transplantation, Male, Orthopedic Procedures methods, Prospective Studies, Recombinant Proteins therapeutic use, Recovery of Function, Transforming Growth Factor beta therapeutic use, Treatment Outcome, Bone Screws, Lumbar Vertebrae surgery, Spondylolysis surgery
- Abstract
Object: Isthmic spondylolysis can significantly decrease functional abilities, especially in adolescent athletes. Although treatment can range from observation to surgery, direct screw placement through the fractured pars, or Buck's procedure, may be a more minimally invasive procedure than the more common pedicle screw-hook construct., Methods: Review of surgical databases identified 16 consecutive patients treated with Buck's procedure from 2004 to 2010. Twelve patients were treated at Miami Children's Hospital and 4 at Barrow Neurological Institute. Demographics and clinical and radiographic outcomes were recorded and analyzed retrospectively., Results: The 16 patients had a median age of 16 years, and 14 were 20 years or younger at the time of treatment. Symptoms included axial back pain in 100% of patients with concomitant radiculopathy in 38%. Pars defects were bilateral in 81% and unilateral in 19% for a total of 29 pars defects treated using Buck's procedure. Autograft or allograft augmented with recombinant human bone morphogenetic protein as well as postoperative bracing was used in all cases. Postoperatively, symptoms resolved completely or partially in 15 patients (94%). Of 29 pars defects, healing was observed in 26 (89.6%) prior to 1 revision surgery, and an overall fusion rate of 97% was observed at last radiological follow-up. There were no implant failures. All 8 athletes in this group had returned to play at last follow-up., Conclusions: Direct screw repair of the pars interarticularis defect as described in this series may provide a more minimally invasive treatment of adolescent patients with satisfactory clinical and radiological outcomes, including return to play of adolescent athletes.
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- 2014
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39. Characteristics of modern Gleason 9/10 prostate adenocarcinoma: a single tertiary centre experience within the Republic of Ireland.
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O'Kelly F, Elamin S, Cahill A, Aherne P, White J, Buckley J, O'Regan KN, Brady A, Power DG, O'Brien MF, Sweeney P, Mayer N, and Kelly PJ
- Subjects
- Aged, Biopsy, Humans, Incidence, Ireland, Male, Middle Aged, Neoplasm Grading, Neoplasm Metastasis, Prostate pathology, Retrospective Studies, Adenocarcinoma pathology, Prostatic Neoplasms pathology, Tertiary Care Centers
- Abstract
Introduction: The 2005 international society of urological pathology consensus statement on Gleason grading in prostate cancer revised Gleason scoring in clinical practice. The potential for grade migration with this refinement poses difficulties in interpreting historical series. We report the characteristics of a recent cohort of consecutive Gleason score 9 or 10 prostate cancers in our institution. The purpose of this study was to define the clinicopathologic variables and staging information for this high-risk population, and to identify whether traditional prostate staging techniques are adequate for this subcohort of men., Materials and Methods: A computational review of our pathology database was performed. Between May 2010 and September 2012, 1,295 consecutive biopsies were undertaken, 168 of which were high-grade tumours (12.97 %). This group were divided into two cohorts of which 84 (12.05 %) had a highest reported Gleason score of 9 (N = 79) or 10 (N = 5) and 84 were reported as Gleason 8. All biopsies were double-reported by pathologists with a special interest in uropathology., Results: Men diagnosed with a Gleason pattern 5 tumour were statistically far more likely to have advanced disease on direct rectal examination of the prostate compared with Gleason sum 8 tumours (p < 0.001) and a positive first-degree family history of prostate cancer (p < 0.001). Overall, Gleason sum 9/10 prostate cancers were also found to be statistically more aggressive than Gleason sum 8 tumours on TRUS core biopsy analysis with significantly higher levels of perineural invasion (p < 0.0001) and extracapsular extension (p = 0.001) as well as a higher levels of tumour found within the core biopsy sample. Those men diagnosed with Gleason pattern 5 prostate cancer also had radiological indicators of increased tumour aggressiveness compared with Gleason sum 8 cancer with respect to bone (p = 0.0002) and visceral (p = 0.044) metastases at presentation., Conclusions: This series of Gleason score 9/10 prostate cancers serves to highlight the large disease burden, adverse pathologic features, and locally advanced nature of this aggressive subtype, which has previously been under-described in the literature, and differs from historical series in having a large high-grade cohort demonstrating high rates of metastatic disease. A history of prostate cancer amongst first-degree relatives was particularly prevalent in this population raising the issue of screening in a high-risk population. The high incidence of visceral metastatic disease at presentation supports upfront staging with CT thorax, abdomen, and pelvis in patients with Gleason 9 or 10 prostate cancers.
- Published
- 2014
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40. Adult blunt renal trauma: routine follow-up imaging is excessive.
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Breen KJ, Sweeney P, Nicholson PJ, Kiely EA, and O'Brien MF
- Subjects
- Adolescent, Adult, Female, Follow-Up Studies, Humans, Male, Retrospective Studies, Trauma Centers, Unnecessary Procedures statistics & numerical data, Young Adult, Kidney diagnostic imaging, Kidney injuries, Tomography, X-Ray Computed statistics & numerical data, Wounds, Nonpenetrating diagnostic imaging
- Abstract
Objective: To determine the yield of follow-up imaging in patients sustaining renal trauma at our level-1 trauma center and hence, whether the 2013 European Association of Urology guidelines are clinically applicable., Methods: All patients who attended Cork University Hospital with a diagnosis of renal injury from 2000-2012 were identified. Review of all medical records and radiologic imaging was undertaken. Injuries were graded using the American Association for the Surgery of Trauma Organ Injury Scale and were grouped as low-grade injuries (I, II, and III) or high-grade injuries (IV and V)., Results: One hundred and two patients (105 renal units) were identified with a median age of 23 years (interquartile range, 18-39 years). The mechanism of injury was blunt force in 98 of 102 cases (96%). Injuries were diagnosed at the time of admission using contrast-enhanced computed tomography (CT) imaging. Low-grade injuries accounted for 78 of 102 cases (77%); all were managed conservatively with a complication rate of 2 of 78 (3%). Twenty-four patients (23%) had high-grade injuries; 2 cases required nephrectomy, 22 of 24 (92%) were managed conservatively with a complication rate of 5 of 24 (21%). All patients with complications were symptomatic, prompting repeat imaging. Overall, 38 of 102 patients (37%) underwent at least 1 follow-up CT: 20 of 78 (25%) of low-grade injuries and 18 of 24 (75%) of high-grade injuries. Concurrent thoracoabdominal injuries mandated the need for repeat CT evaluation in 21 of 38 patients (55%). Thirty-one (30%) patients were reimaged by renal ultrasonography., Conclusion: Selective reimaging of renal injuries based on clinical and laboratory criteria would have detected all complications. The 2013 European Association of Urology guidelines on urologic trauma are clinically appropriate in a major tertiary-trauma unit., (Copyright © 2014 Elsevier Inc. All rights reserved.)
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- 2014
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41. Analysis of the direct cost of surgery for four diagnostic categories of adult spinal deformity.
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McCarthy IM, Hostin RA, O'Brien MF, Fleming NS, Ogola G, Kudyakov R, Richter KM, Saigal R, Berven SH, and Ames CP
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Evidence-Based Medicine, Female, Humans, Male, Middle Aged, Reoperation economics, Retrospective Studies, Young Adult, Orthopedic Procedures economics, Scoliosis economics, Scoliosis surgery, Spine abnormalities, Spine surgery
- Abstract
Background Context: Existing literature on adult spinal deformity (ASD) offers little guidance regarding an evidence-based approach to care. To optimize the value of medical treatment, a thorough understanding of the cost of surgical treatment for ASD is required., Purpose: To evaluate four clinically and radiographically distinct groups of ASD and identify and compare the cost of surgical treatment among the groups., Study Design/setting: Multicenter retrospective study of consecutive surgeries for ASD., Patient Sample: Three hundred twenty-five consecutive ASD patients treated between 2008 and 2010., Outcome Measures: Cost data were collected from hospital administrative records on the direct costs (DCs) incurred for the episode of surgical care, excluding overhead., Methods: Based on preoperative radiographs and history, patients were categorized into one of four diagnostic categories of deformity: primary idiopathic scoliosis (PIS), primary degenerative scoliosis (PDS), primary sagittal plane deformity (PSPD), and revision (R). Analysis of variance and generalized linear model regressions were used to analyze the DCs of surgery and to assess differences in costs across the four diagnostic categories considered., Results: Significant differences were observed in DC of surgery for different categories of ASD, with surgical treatment for PDS the most expensive followed in decreasing order by PSPD, PIS, and R (p<.01). Results further revealed a significant positive relationship between age and DC (p<.01) and a significant positive relationship between length of stay and DC (p<.01). Among PIS patients, for every incremental increase in levels fused, the expected DC increased by $3,997 (p=.00). Fusion to pelvis also significantly increased the DC of surgery for patients aged 18 to 29 years (p<.01) and 30 to 59 years (p<.01) but not for 60 years or more (p=.86)., Conclusions: There is an increasing DC of surgery with increasing age, length of hospital stay, length of fusion, and fusions to the pelvis. Revision surgery is the least expensive surgery on average and should therefore not preclude its consideration from a pure cost perspective., (Copyright © 2013 Elsevier Inc. All rights reserved.)
- Published
- 2013
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42. Reoperation rates and impact on outcome in a large, prospective, multicenter, adult spinal deformity database: clinical article.
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Scheer JK, Tang JA, Smith JS, Klineberg E, Hart RA, Mundis GM Jr, Burton DC, Hostin R, O'Brien MF, Bess S, Kebaish KM, Deviren V, Lafage V, Schwab F, Shaffrey CI, and Ames CP
- Subjects
- Adult, Aged, Aged, 80 and over, Databases, Factual, Female, Health Status, Humans, Male, Middle Aged, Prospective Studies, Radiography, Reoperation, Risk Factors, Spinal Curvatures diagnostic imaging, Spinal Fusion instrumentation, Spine diagnostic imaging, Treatment Outcome, Quality of Life, Spinal Curvatures surgery, Spinal Fusion methods, Spine surgery
- Abstract
Object: Complications and reoperation for surgery to correct adult spinal deformity are not infrequent, and many studies have analyzed the rates and factors that influence the likelihood of reoperation. However, there is a need for more comprehensive analyses of reoperation in adult spinal deformity surgery from a global standpoint, particularly focusing on the 1st year following operation and considering radiographic parameters and the effects of reoperation on health-related quality of life (HRQOL). This study attempts to determine the prevalence of reoperation following surgery for adult spinal deformity, assess the indications for these reoperations, evaluate for a relation between specific radiographic parameters and the need for reoperation, and determine the potential impact of reoperation on HRQOL measures., Methods: A retrospective review was conducted of a prospective, multicenter, adult spinal deformity database collected through the International Spine Study Group. Data collected included age, body mass index, sex, date of surgery, information regarding complications, reoperation dates, length of stay, and operation time. The radiographic parameters assessed were total number of levels instrumented, total number of interbody fusions, C-7 sagittal vertical axis, uppermost instrumented vertebra (UIV) location, and presence of 3-column osteotomies. The HRQOL assessment included Oswestry Disability Index (ODI), 36-Item Short Form Health Survey physical component and mental component summary, and SRS-22 scores. Smoking history, Charlson Comorbidity Index scores, and American Society of Anesthesiologists Physical Status classification grades were also collected and assessed for correlation with risk of early reoperation. Various statistical tests were performed for evaluation of specific factors listed above, and the level of significance was set at p < 0.05., Results: Fifty-nine (17%) of a total of 352 patients required reoperation. Forty-four (12.5%) of the reoperations occurred within 1 year after the initial surgery, including 17 reoperations (5%) within 30 days. Two hundred sixty-eight patients had a minimum of 1 year of follow-up. Fifty-three (20%) of these patients had a 3-column osteotomy, and 10 (19%) of these 53 required reoperation within 1 year of the initial procedure. However, 3-column osteotomy was not predictive of reoperation within 1 year, p = 0.5476). There were no significant differences between groups with regard to the distribution of UIV, and UIV did not have a significant effect on reoperation rates. Patients needing reoperation within 1 year had worse ODI and SRS-22 scores measured at 1-year follow-up than patients not requiring operation., Conclusions: Analysis of data from a large multicenter adult spinal deformity database shows an overall 17% reoperation rate, with a 19% reoperation rate for patients treated with 3-column osteotomy and a 16% reoperation rate for patients not treated with 3-column osteotomy. The most common indications for reoperation included instrumentation complications and radiographic failure. Reoperation significantly affected HRQOL outcomes at 1-year follow-up. The need for reoperation may be minimized by carefully considering spinal alignment, termination of fixation, and type of surgical procedure (presence of osteotomy). Precautions should be taken to avoid malposition or instrumentation (rod) failure.
- Published
- 2013
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43. Association of cancer with moderately impaired renal function at baseline in a large, representative, population-based cohort followed for up to 30 years.
- Author
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Christensson A, Savage C, Sjoberg DD, Cronin AM, O'Brien MF, Lowrance W, Nilsson PM, Vickers AJ, Russo P, and Lilja H
- Subjects
- Adult, Cohort Studies, Female, Follow-Up Studies, Humans, Kidney Neoplasms physiopathology, Male, Middle Aged, Risk, Glomerular Filtration Rate, Kidney Neoplasms etiology, Renal Insufficiency, Chronic complications
- Abstract
Patients with chronic renal failure show a greater incidence of malignancies. We evaluated whether moderately impaired renal function at baseline influenced risk of all cancers during long-term follow in young persons. Our cohort included 33,346 subjects, aged 26-61 years at baseline, in a representative, population-based study enrolling subjects from 1974 to 1992. Median follow-up time was 28 years. Plasma creatinine was analyzed as a single measure at baseline. Incident cases of cancer were identified from the Swedish Cancer Registry. We studied 24,552 subjects from the cohort. To account for the unique sampling design, participants were divided by sex and age at baseline into 1,132 older men (age 60), 14,254 younger men (age 40-52), 7,498 older women (age 47-57) and 1,688 younger women (age 35-43). Glomerular filtration rate (GFR) was estimated using the CKD-EPI formula. Patients were classified as having either normal to mildly impaired kidney function (eGFR ≥ 60 mL/min/1.73 m(2) ), or moderate kidney dysfunction (eGFR<60 mL/min/1.73 m(2) ). We calculated the risk of all cancers using competing risks regression. Overall, 6,595 participants were diagnosed with cancer, and 854 subjects (3.5%) had moderately impaired renal dysfunction at baseline. There was a significant association between moderately decreased GFR and subsequent risk of kidney cancer in younger men (hazard ratio, 3.38; 95% CI, 1.48 to 7.71; p = 0.004). However, we found no association with overall long-term cancer risk. Our confirmation of an association between moderately impaired renal function and risk of kidney cancer in younger men requires further exploration of high-risk groups and biological mechanisms., (Copyright © 2013 UICC.)
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- 2013
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44. Evaluation of prediagnostic prostate-specific antigen dynamics as predictors of death from prostate cancer in patients treated conservatively.
- Author
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O'Brien MF, Cronin AM, Fearn PA, Savage CJ, Smith B, Stasi J, Scardino PT, Fisher G, Cuzick J, Møller H, Oliver RT, Berney DM, Foster CS, Eastham JA, Vickers AJ, and Lilja H
- Subjects
- Aged, Cohort Studies, Humans, Male, Proportional Hazards Models, Prostatic Neoplasms mortality, Prostatic Neoplasms therapy, Prostate-Specific Antigen blood, Prostatic Neoplasms blood, Survival Analysis
- Abstract
Prostate-specific antigen (PSA) dynamics have been proposed to predict outcome in men with prostate cancer. We assessed the value of PSA velocity (PSAV) and PSA doubling time (PSADT) for predicting prostate cancer-specific mortality (PCSM) in men with clinically localized prostate cancer undergoing conservative management or early hormonal therapy. From 1990 to 1996, 2,333 patients were identified, of whom 594 had two or more PSA values before diagnosis. We examined 12 definitions for PSADT and 10 for PSAV. Because each definition required PSA measurements at particular intervals, the number of patients eligible for each definition varied from 40 to 594 and number of events from 10 to 119. Four PSAV definitions, but no PSADT, were significantly associated with PCSM after adjustment for PSA in multivariable Cox proportional hazards regression. All four could be calculated only for a proportion of events, and the enhancements in predictive accuracy associated with PSAV had very wide confidence intervals. There was no clear benefit of PSAV in men with low PSA and Gleason grade 6 or less. Although evidence that certain PSAV definitions help to predict PCSM in the cohort exist, the value of incorporating PSAV in predictive models to assist in determining eligibility for conservative management is, at best, uncertain., (Copyright © 2010 UICC.)
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- 2011
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45. Radical prostatectomy outcome when performed with PSA above 20 ng/ml.
- Author
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Connolly SS, Oon SF, Carroll C, Kinsella S, O'Brien MF, Mulvin DW, and Quinlan DM
- Subjects
- Aged, Humans, Male, Middle Aged, Prostatic Neoplasms blood, Prostatic Neoplasms mortality, Survival Rate, Prostate-Specific Antigen blood, Prostatectomy, Prostatic Neoplasms surgery
- Abstract
Many centres currently do not offer radical prostatectomy (RP) to men with high-risk localised prostate cancer due to concerns regarding poor outcome, despite evidence to the contrary. We identified 18 men undergoing RP with serum PSA >20 ng/ml (high-risk by National Comprehensive Cancer Network definition) and minimum follow-up of 12 years (mean 13.5). Mean preoperative PSA was 37.0 ng/ml (Range 21.1-94.0). Prostatectomy pathology reported extracapsular disease in 16 (88.9%), positive surgical margins in 15 (83%) and positive pelvic lymph nodes in 5 (27.8%). Overall and cancer-specific survival at 5 and 10-years was 83.3%, 88.2%, 72% and 76.5% respectively. With complete follow-up 11 (61.1%) are alive, and 5 (27.8%) avoided any adjuvant therapy. Complete continence (defined as no involuntary urine leakage and no use of pads) was achieved in 60%, with partial continence in the remainder. We conclude that surgery for this aggressive variant of localised prostate cancer can result in satisfactory outcome.
- Published
- 2011
46. Intraoperative conversion from partial to radical nephrectomy at a single institution from 2003 to 2008.
- Author
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Galvin DJ, Savage CJ, Adamy A, Kaag M, O'Brien MF, Kallingal G, and Russo P
- Subjects
- Aged, Female, Humans, Intraoperative Period, Male, Middle Aged, Retrospective Studies, Risk Assessment, Time Factors, Nephrectomy methods
- Abstract
Purpose: Little information exists on conversion from partial to radical nephrectomy. We assessed the intraoperative reasons and predictive factors for conversion in a contemporary series of patients undergoing partial nephrectomy., Materials and Methods: We identified all patients at our institution who underwent open or laparoscopic partial nephrectomy with conversion to radical nephrectomy between 2003 and 2008. Renal function was assessed by the glomerular filtration rate using the modification of diet in renal disease equation. We used logistic regression analysis to determine whether tumor site, tumor size, body mass index, American Society of Anesthesiologists score, age or gender was associated with the conversion risk., Results: The rate of conversion to radical nephrectomy was 6% (61 of 1,029 patients). In the open partial nephrectomy group 59 of 865 cases (7%, 95% CI 5-9) and in the laparoscopic partial nephrectomy group 2 of 164 (1.2%, 95% CI 0.01-4) were converted. The most common reasons for conversion were invasion of hilar structures, size discrepancy and insufficient residual kidney. Patients with conversion were more likely to have larger tumors (per 1 cm increase OR 1.41, 95% CI 1.24-1.59), a central site (central vs peripheral OR 7.74, 95% CI 3.98-15) and a lower preoperative glomerular filtration rate (per 10 ml/minute/1.73 m(2) OR 0.78, 95% CI 0.67-0.91), and present with symptoms (any vs none OR 2.78, 95% CI 1.54-5.04) than those without conversion. The median postoperative glomerular filtration rate was 46 vs 61 ml/minute/1.73 m(2) in patients with vs without conversion., Conclusions: Conversion to radical nephrectomy was rare in patients undergoing partial nephrectomy in this series. Increasing tumor size, central site, lower preoperative glomerular filtration rate and symptoms at presentation were associated with an increased risk of conversion, which increases the likelihood of chronic kidney disease postoperatively., (Copyright © 2011 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
- Full Text
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47. Is simple nephrectomy truly simple? Comparison with the radical alternative.
- Author
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Connolly SS, O'Brien MF, Kunni IM, Phelan E, Conroy R, Thornhill JA, and Grainger R
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Blood Loss, Surgical, Female, Humans, Length of Stay, Male, Middle Aged, Retrospective Studies, Terminology as Topic, Young Adult, Nephrectomy methods
- Abstract
Background: The Oxford English dictionary defines the term "simple" as "easily done" and "uncomplicated". We tested the validity of this terminology in relation to open nephrectomy surgery., Methods: Retrospective review of 215 patients undergoing open, simple (n = 89) or radical (n = 126) nephrectomy in a single university-affiliated institution between 1998 and 2002. Operative time (OT), estimated blood loss (EBL), operative complications (OC) and length of stay in hospital (LOS) were analysed. Statistical analysis employed Fisher's exact test and Stata Release 8.2., Results: Simple nephrectomy was associated with shorter OT (mean 126 vs. 144 min; p = 0.002), reduced EBL (mean 729 vs. 859 cc; p = 0.472), lower OC (9 vs. 17%; 0.087), and more brief LOS (mean 6 vs. 8 days; p < 0.001)., Conclusions: All parameters suggest favourable outcome for the simple nephrectomy group, supporting the use of this terminology. This implies "simple" nephrectomies are truly easier to perform with less complication than their radical counterpart.
- Published
- 2011
- Full Text
- View/download PDF
48. Disseminated visceral coccidiosis in Eurasian cranes (Grus grus) in the UK.
- Author
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O'Brien MF, Brown MJ, Stidworthy MF, Peirce MA, Marshall RN, Honma H, and Nakai Y
- Subjects
- Animals, Animals, Wild parasitology, Bird Diseases parasitology, Birds, Coccidiosis epidemiology, Coccidiosis parasitology, DNA, Protozoan analysis, DNA, Ribosomal analysis, Feces parasitology, Female, Granuloma epidemiology, Granuloma parasitology, Male, United Kingdom epidemiology, Bird Diseases epidemiology, Coccidiosis veterinary, Eimeria isolation & purification, Granuloma veterinary
- Abstract
Clinical disease and mortalities due to disseminated visceral coccidiosis were identified for the first time in a group of captive juvenile Eurasian cranes (Grus grus) in the UK during 2008. Presumptive diagnosis was made from the finding of granulomatous nodules in the liver, spleen and other organs at gross postmortem examination, and confirmed histologically by the presence of intracellular coccidial stages within lesions. The species of coccidian was determined to be Eimeria reichenowi on the basis of faecal oocyst morphology and sequencing of 18S rDNA by PCR. A further outbreak of clinical disease occurred in the same enclosure in 2009, affecting a new group of juvenile Eurasian cranes and demoiselle cranes (Anthropoides virgo) and indicating the persistence of infective oocysts in the environment. Clinical sampling of birds during both years demonstrated positive results from examination of both faecal samples and peripheral blood smears.
- Published
- 2011
- Full Text
- View/download PDF
49. Partial nephrectomy for selected renal cortical tumours of ≥ 7 cm.
- Author
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Karellas ME, O'Brien MF, Jang TL, Bernstein M, and Russo P
- Subjects
- Aged, Carcinoma, Renal Cell mortality, Carcinoma, Renal Cell pathology, Epidemiologic Methods, Humans, Kidney Neoplasms mortality, Kidney Neoplasms pathology, Middle Aged, Treatment Outcome, Tumor Burden, Carcinoma, Renal Cell surgery, Kidney Cortex pathology, Kidney Neoplasms surgery, Nephrectomy methods
- Abstract
Objective: To examine our institutional experience in patients treated with partial nephrectomy (PN) for renal cortical tumours (RCTs) of ≥ 7 cm, as PN is an accepted surgical approach for appropriate RCTs of < 7 cm but there are limited data on the use of PN for larger tumours., Patients and Methods: After Institutional Review Board approval, we examined our prospectively collected surgical database for patients treated with PN for RCTs of ≥ 7 cm between 1989 and 2008. Pertinent demographic, clinical, surgical and pathological data were reviewed., Results: In all, 34 patients (37 renal units) were identified for analysis with a median (interquartile range, IQR) age of 63 (52-71) years, median (IQR) tumour size of 7.5 (7.2-9.0) cm with the largest tumour being 19 cm. In 31 renal units (28 patients, 84%) carcinoma was evident, with 16 renal units (43%) having conventional clear cell carcinoma, followed by papillary in eight renal units (21%). Currently, 20 of these 28 patients (71%) are disease free, three are alive with metastatic disease (two had known preoperative metastatic disease), three died from disease and two died from other causes. The median (IQR) preoperative estimated glomerular filtration rate was 65 (55-73) mL/min/1.73 m(2) , compared with 55 (47-74) mL/min/1.73 m(2) after PN (P= 0.003, paired Student's t-test)., Conclusions: Our findings suggest that PN for RCTs of ≥ 7 cm can be safely performed and provide effective tumour control for selected patients. PN should be considered for patients with appropriate tumours, solitary kidneys or pre-existing renal insufficiency., (© 2010 THE AUTHORS. JOURNAL COMPILATION © 2010 BJU INTERNATIONAL.)
- Published
- 2010
- Full Text
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50. Update on the management of T1 renal cortical tumours.
- Author
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Cutress ML, Ratan HL, Williams ST, and O'Brien MF
- Subjects
- Carcinoma, Renal Cell pathology, Disease Progression, Humans, Kidney Neoplasms pathology, Treatment Outcome, Tumor Burden, Carcinoma, Renal Cell therapy, Catheter Ablation methods, Cryotherapy methods, Kidney Cortex surgery, Kidney Neoplasms therapy, Nephrectomy methods
- Abstract
There are a range of treatment strategies for the management of patients with small incidental renal cortical tumours including active surveillance, radiofrequency ablation, cryotherapy, radical nephrectomy and partial nephrectomy. A large number of such tumours are benign and might therefore be over-treated with radical nephrectomy. There are emergent short-term oncological and clinical outcomes for cryotherapy and radiofrequency ablation, and recent studies have illustrated the benefits of partial nephrectomy for minimizing the risk of progression to chronic kidney disease. The outcomes of these different treatment methods are discussed.
- Published
- 2010
- Full Text
- View/download PDF
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