1,720,968 research outputs found
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
Chirurgia mini-invasiva
No full textNel capitolo vengono brevemente descritti alcuni aspetti tecnici di laparoscopia, toracoscopia e retroperitoneoscopia assieme alle applicazioni cliniche relative a queste procedure mininvasive: testicolo non palpabile, sindrome da persistenza di residui mulleriani, stati intersessuali, cisti ovariche, dolori addominali ricorrenti, appendicite acuta, diverticolo di Meckel, duplicazioni intestinali, reflusso gastro esofageo, colecistopatie colelitiasiche, invaginazione intestinale, chirurgia splenica, patologia diaframmatica, ernie inguinali, stenosi ipertrofica del piloro, patologie oncologiche, malformazioni anorettali, megacolon agangliare, patologia renale, varicocele e patologia toracica infiammatoria
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
Vaginal malformations: a proposed classification based on embryological, anatomical and clinical criteria and their surgical management (an analysis of 167 cases)
No full textAlthough it is virtually impossible to formulate a scheme that can satisfactorily collect all different types of vaginal malformations, a simple classification would be of a considerable value and would permit logical operative decisions. Many classifications of anomalies of uterus and vagina have been proposed: we find them unsatisfactory and confusing, being either too simple or too complex. We propose a new classification, focused only on vagina and based on embryological, anatomical, clinical and surgical criteria.
In over 30 years, 167 females with vaginal malformations have been observed in our department. Intersex cases were excluded. The encountered anomalies have been divided into six types and ten subtypes: type I vaginal agenesis (IA associated with uterine agenesis/17 Pts, IB isolated/1 Pt); type II vaginal atresia (IIA proximal/1 Pt, IIB distal/4 Pts); type III vaginal atresia with urethrovaginal fistula-urogenital sinus (IIIA proximal fistula-high sinus/42 Pts, IIIB distal fistula-low sinus/55 Pts); type IV vaginal atresia with transverse septum (IVA transverse septum/6 Pts, IVB imperforate hymen/17 Pts); type V disorders of mullerian ducts fusion (VA vaginal duplication/4 Pts, VB longitudinal septum/4 Pts); type VI cloaca/16 Pts. Of each type and subgroup of malformation the appropriate surgical correction is reported. Types of malformation and surgical treatment are analysed: IA vaginal reconstruction using a sigmoid conduit, IB vaginal reconstruction using a sigmoid conduit, atresic cervical resection and uterus-new vagina anastomosis according to Schmid; II perineal vaginal pull-through; IIIA anterior sagittal transanorectal vaginal pull-through, IIIB perineal flap vaginoplasty; IVA excision with abdominovaginal approach, IVB hymen incision; VA tubularization, VB septectomy via perineal approach; VI posterior sagittal anorectal-vaginal-urethroplasty.
Most of the patients had good aesthetic and functional results. Type III showed relatively more complications: four redo operations (IIIA), four revisions of the vaginoplasty (IIIB). One patient is still waiting for definitive surgical correction.
An early diagnosis is desirable to correct adequately vaginal malformations, which becomes mostly evident around puberty. The better timing for surgery is early age, to obtain better results and to avoid many of the psychological problems that arise at a later age
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
Trattamento laparoscopico delle cisti ovariche in età neonatale
No full textLe cisti ovariche sono la tumefazione ovarica più frequente nel neonato e le loro possibili complicanze costituiscono una delle principali cause di intervento neonatale. La sempre più frequente diagnosi ecografia prenatale consente di scegliere l'atteggiamento terapeutico più appropriato. La laparoscopia consente un ulteriore approfondimento della diagnosi, escludendo macroscopicamente la presenza di eventuali formazioni teratomatose dell'ovaio e ponendosi quale trattamento terapeutico rispettoso della mini-invasività soprattutto del neonato
- …
