104,750 research outputs found
Bilateral spigelian hernias: diagnosis and treatment in a regional hospital
No full textHarsh Kanhere and Martin Bruenin
Surgical outcomes following pancreatic resection at a low-volume community hospital. Do all patients need to be sent to a regional cancer center?
No full textHarsh Kanhere, Thomas Satyadas, Guy J. Madder
Evolution in technique of laparoscopic pancreaticoduodenectomy: a decade long experience from a tertiary center
No full textThomas Satyadas, Harsh A. Kanhere, Chris Lauder and Guy J. Madder
Sclerosing haemangiomas of the liver: Two cases of mistaken identity
No full textWe describe two cases where patients undergoing hepatic resection for metastatic disease of colorectal origin were found to have concomitant sclerosing haemangiomas. The typical radiological and histological appearances of these lesions are discussed.C. Lauder, G. Garcea, H. Kanhere, and G. J. Madder
Pancreaticoduodenectomy: outcomes in a low-volume, specialised Hepato Pancreato Biliary unit
No full textBackground This study was designed to evaluate the outcomes of pancreaticoduodenectomy (PD) at a low-volume specialised Hepato Pancreato Biliary (HPB) unit. Volume outcome analyses show significantly better results for patients undergoing PD at high-volume centres (Begg et al. JAMA 280:1747–1751, 1998; Finlayson et al. Arch Surg 138:721–725, 2003; Birkmeyer et al. N Engl J Med 346:1128–1137, 2002; Gouma et al. Ann Surg 232:786–795, 2000). Centralisation of PD seems to be the logical conclusion to be drawn from these results. In countries like Australia with a small and widely dispersed population, centralisation may not be always feasible. Alternative strategy would be to have similar systems in place to those in high-volume centres to achieve similar results at low-volume centres. Many Australian tertiary care centres perform low to medium volumes of PD (Chen et al. HPB 12:101–108, 2010; Kwok et al. ANZ J Surg 80:605–608, 2010; Barnett and Collier ANZ J Surg 76:563–568, 2006; Samra et al. Hepatobiliary Pancreat Dis Int 10:415–421, 2011). Most of these have a specialised HPB unit, accredited by the Australia and New Zealand Hepatic pancreatic and biliary association (ANZHPBA), as training units for post fellowship training in HPB surgery. It is imperative to perform outcome-based analyses in these units to ensure safety and high quality of care. Methods Retrospective analysis of database for periampullary carcinoma (1998 till date) was performed in an ANZHPBA accredited HPB unit based at a tertiary care teaching hospital in South Australia. Because age older than 74 years is shown to be a predictive marker of increased morbidity and mortality after a PD, we analysed the outcomes in this subset of patients separately. Results Fifty-three patients underwent PD in 14 years. Overall mortality was 3.8 %. The last in hospital mortality was in 1999. The morbidity rates and the oncologic outcomes were similar to those in high-volume units. Conclusions PD can be safely performed in a low-volume specialised unit at centres where the amenities and processes at high-volume centres can be replicated.H. A. Kanhere, M. I. Trochsler, M. H. Kanhere, A. N. Lord, G. J. Madder
Technical note: Facilitating laparoscopic liver biopsy by the use of a single-handed disposable core biopsy needle
No full textDespite the use of advanced radiological investigations, some liver lesions cannot be definitely diagnosed without a biopsy and histological examination. Laparoscopic Tru-Cut biopsy of the liver lesion is the preferred approach to achieve a good sample for histology. The mechanism of a Tru-Cut biopsy needle needs the use of both hands to load and fire the needle. This restricts the ability of the surgeon to direct the needle into the lesion utilising the laparoscopic ultrasound probe. We report a technique of laparoscopic liver biopsy using a disposable core biopsy instrument (BARD (R) disposable core biopsy needle) that can be used single-handedly. The needle can be positioned with laparoscopic graspers in order to reach posterior and superior lesions. This technique can easily be used in conjunction with laparoscopic ultrasound.M. I. Trochsler, Q. Ralph, F. Bridgewater, H. Kanhere, and Guy J. Madder
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Laparoscopic extraperitoneal repair versus open inguinal hernia repair: 20-year follow-up of a randomized controlled trial
No full textPurpose: This study compared the long-term recurrence rates of laparoscopic totally extraperitoneal (TEP) and open inguinal hernia repair in patients from a randomised trial completed in 1994. Laparoscopic inguinal hernia surgery, especially TEP repair, has gained widespread acceptance in recent years. There is still paucity of data on long-term follow-up comparing recurrence rates for open and laparoscopic techniques. This is the first study providing direct long-term comparative data about these techniques. Methods: A randomised controlled trial was conducted between 1992 and 1994 on patients undergoing a laparoscopic TEP or an open inguinal hernia (Shouldice) repair at our institution. Of the original 104 participants, contemporary follow-up data could be obtained for 98 patients with regards to long-term recurrence. These data were collected with the help of questionnaires, telephone calls and retrieval of case records. Medical records were reviewed for all patients. Data were analysed using a Cox proportional hazards model. Results: There were 7/72 (9.7%) recurrences in the open group and 9/35 (25.7%) recurrences in the laparoscopic group. This difference in recurrence rates was statistically significant (HR = 2.94; 95% CI 1.05-8.25; p = 0.041.) Conclusion: Laparoscopic TEP inguinal hernia repair performed in 1992-1994 had a higher recurrence rate than open Shouldice inguinal hernia repair during the same period. The original study was undertaken in the inceptive days of laparoscopic surgery and results need to be interpreted considering the technology and expertise available at that time.A. Barbaro, H. Kanhere, J. Bessell, G. J. Madder
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