1,720,966 research outputs found
Pull-through for high imperforate anus
No full textThe chapter is a practical guidance for the treatment of high imperforate anus with combined (laparoscopic and perineal) pull-through maneuver. Patient position, indications, technical notes, pre and post operative considerations are described
LAPAROSCOPIC ASSISTED ANORECTAL PULL-THROUGH FOR HIGH IMPERFORATE ANUS: THREE YEARS EXPERIENCE
No full textBackground/Purpose
The aim of this report is to describe our three years experience with the Laparoscopic Assisted Anorectal Pull-through for High Imperforate Anus (LAARP) using the laparoscopic muscle electrostimulation.
Methods
In the Dept of Pediatric Surgery of the University of Bologna, from: March 2001 to March 2004, eight patients, with a diagnosis of high anorectal malformations under- went a LAARP. The patients, all males and aged from 4 to 9 months (mean age 5.8 months), presented a recto-ureth- ral fistula. The following associated malformations were described: sacral malformation, laryngeal stenosis, urethral duplication, multicystic kidney, non palpable testis and esophageal atresia. All were treated with a colostomy in the newborn period followed by a delayed LAARP. The laparoscopic step was characterized by the stimulation of the puborectal muscle, using a modified Peña electrosti- mulator introduced via a trocar. All patients underwent a post operative period of anal dilatations.
Results
In seven cases the LAARP was succesful while in one case, due to a strong tension from the colostomy, a con- version to open technique, was needed.
Conclusion
Although an evaluation regarding the continence is to be followed up, we consider the LAARP the treatment of choice for the high imperforate anus. It offers the ad- vantage of a good visualization of the fistula and of the surrounding structures and minimally invasive abdominal and perineal wounds.With the laparoscopic Peña stimu- lator the direct observation of the puborectal slings con- traction allows an evaluation of the functional contracti- lity and an accurate colonic pull through in the centre of the muscle complex
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Novità nel trattamento dell'ernia inguinale del bambino: la correzione laparoscopica
No full textViene presentato il trattamento dell'ernia inguinale mediante tecnica mininvasiva laparoscopica. I vantaggi di tale approccio sono molteplici tra cui la possibilità di trattare contemporaneamente entrambi i lati, di valutare lo stato di perfusione delle anse o di annessi in caso di ernie incarcerate e gli ottimi risultati estetici
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
THORACOSCOPIC REMOVAL OF RESIDUAL BURNED ESO- PHAGUS
No full textIntroduction
The most frequent cause of esophagectomy in chil- dren is the presence of strictures related to the ingestion of corrosive agents. When dilatations of burned esopha- gus are not feasible due to high risk of rupture or when those are unsuccessful, surgical treatment is mandatory. Operative strategy is controversial regarding esophageal substitution and timing of surgery, while the need for eso-
phagectomy to avoid risk of cancer is internationally re- cognised.We report one case of thoracoscopic esophagec- tomy as a delayed intervention after open esophagoco- lonplasty in a child with a burned esophagus.
Materials and methods
A two years old child with a severe esophageal steno- sis for accidental ingestion of liquid caustic soda, reached our institution from Mali. A retrosternal isoperistaltic esofagocolonplasty was realised without removing the esophagus. 11 months later the child underwent a com- plete right thoracoscopic esophagectomy. The patient was positioned in a left lateral decubitus and five trocars were used. A 5 mm for the telescope was positioned at the seventh intercostal space on the midaxillary line. Two 5 mm operative trocars were placed at the fifth and nineth intercostal space posteriorly to the optic, while two 3 mm trocars were positioned anteriorly to the optic to retract the lung. A single lung ventilation was used. The azigos vein was sectioned and the residual esophagus dissected with a monopolar hook and his lower tract was separated from the stomach with a stapler. The defunc- tioned esophagus was removed from a 5 mm port.
Results
The toracid drain was removed after 24 h and no respi- ratory problem was seen. The patient was discharged after 11 days and came back to his country in a good condition.
Discussion
Open esophagectomy can be associated with high morbidity and delayed return to routine activities. Tho- racoscopic esophagectomy have been proposed both for benign and malignant pathology in adults, while in chil- dren the esperience is still poor. In case of caustic burned esophagus, the intense fibrosis and adherences can lead to accidental lesions of the mediastinal structures. Lapa- roscopic magnification can allow a secure controll of the situation. In our opinion thoracoscopic esophagectomy, in expert hands, can be performed avoiding the risk of long term morbidity of scoliosis, shoulder muscle girdle weakness, and chest wall deformities
- …
