1,720,958 research outputs found
Reconstruction of the loss of substance of the dorsum of the hand: from the conventional techniques to regenerative surgery procedures
No full textOur aim is focused on the advantages of new technologies compared with those of traditional methods in the reconstruction of the loss of substance of the dorsum of the hand. Material of study: We observed 37 patients from 2007 to 2010 with loss of substance of the dorsum of the hand, also associated with significant comorbidities. In 27 patients we chose surgical reconstruction, in 10 patients we opted for conservative reconstruction with the use of new technologies. Results: After a median follow-up from one to three years, in all cases the skin coverage was reinstated and mobility was restored, thereby adhering to the principles of both morphological and functional reconstruction. Discussion: Concerning reconstruction by means of flaps, the main principles dictate is the new coverage must appear as much as possible, similar to the original tissue. The reconstruction must be in a single surgical time. On the other hand, the advent of advanced dressings and bioengineering has optimized conservative skin repair. Conclusions: We have seen a considerable broadening of the indications for conservative reconstruction. This method is suitable for reconstruction of the dorsum of the hand with good effectiveness, it makes it possible to obtain a tissue of good quality, which is flexible and smooth on the tendons and is not excessively thick. These methods are achieved with relative ease even in patients with poor general health. Although costly, this procedure will ultimately save the patient from further surgeries and hospitalization expenses, making it advantageous when considering the benefit-cost rati
Reconstruction of the loss of substance of the dorsum of the hand: from the conventional techniques to regenerative surgery procedures.
No full textOur aim is focused on the advantages of new technologies compared with those of traditional methods in the reconstruction of the loss of substance of the dorsum of the hand. Material of study: We observed 37 patients from 2007 to 2010 with loss of substance of the dorsum of the hand, also associated with significant comorbidities. In 27 patients we chose surgical reconstruction, in 10 patients we opted for conservative reconstruction with the use of new technologies. Results: After a median follow-up from one to three years, in all cases the skin coverage was reinstated and mobility was restored, thereby adhering to the principles of both morphological and functional reconstruction. Discussion: Concerning reconstruction by means of flaps, the main principles dictate is the new coverage must appear as much as possible, similar to the original tissue. The reconstruction must be in a single surgical time. On the other hand, the advent of advanced dressings and bioengineering has optimized conservative skin repair. Conclusions: We have seen a considerable broadening of the indications for conservative reconstruction. This method is suitable for reconstruction of the dorsum of the hand with good effectiveness, it makes it possible to obtain a tissue of good quality, which is flexible and smooth on the tendons and is not excessively thick. These methods are achieved with relative ease even in patients with poor general health. Although costly, this procedure will ultimately save the patient from further surgeries and hospitalization expenses, making it advantageous when considering the benefit-cost rati
Major and minor complications in Veress needle (VN) and direct trocar insertion (DTI) for laparoscopic closed-entry techniques: an updated systematic review and meta-analysis
No full textOBJECTIVE: Direct insertion of the trocar is an alternative method to Veress needle insertion for the creation of pneumoperitoneum. We conducted a systematic review and meta-analysis to compare these two entry closed techniques. DATA SOURCE: A systematic review of the literature was done on PubMed, MEDLINE, Embase, Scopus, and EBSCO. METHODS: The literature search was constructed until May 01, 2022, around search terms for "Veress," "direct trocar," "needle," "insertion," and "laparoscopic ways of entry." This systematic review was reported according to the PRISMA Statement 2020. RESULTS: Sixteen controlled trials (RCTs) and 5 observational studies were included in the systematic review. We found no significant differences in the risk of major complication during the access manoeuvres between DTI and VN: bowel injuries (OR = 0.76, 95% CI: 0.24-2.36, P = 0.63), major vascular injuries (OR = 1.74, 95% CI 0.56-5.38, P = 0.34), port site hernia (OR = 2.41, 95% CI: 0.28-20.71, P = 0.42). DTI has a lower risk of minor complications such as subcutaneous emphysema (OR = 5.19 95% CI: 2.27-11.87, P < 0.0001), extraperitoneal insufflation (OR = 5.93 95% CI: 1.69-20.87, P = 0.006), omental emphysema (OR = 18.41, 95% CI: 7. 01-48.34, P < 0.00001), omental bleeding (OR = 2.32, 95% CI: 1.18-4.55, P = 0.01), and lower number of unsuccessful entry or insufflation attempts (OR = 2.25, 95% CI: 1.05-4.81, P = 0.04). No significant differences were found between the two groups in terms of time required to achieve complete insufflation (MD = - 15.53, 95% CI: - 91.32 to 60.27, P = 0.69), trocar site bleeding (OR = 0.66, 95% CI, 0.25-1.79, P = 0.42), and trocar site infection (OR = 1.19, 95% CI, 0.34-4.20, P = 0.78). CONCLUSION: There were no statistically significant differences in the risk of major complications during the access manoeuvres between DTI and VN. A lower number of minor complications were observed in DTI compared with those in Veress access
Cephalic traumas with lacrimal apparatus involvement. Our experience
No full textPurpose: The involvement of the lacrimal ducts in the extreme cephalic trauma is an infrequent condition. A correct diagnosis and appropriate management of injuries of the lacrimal system are essential to prevent the onset of post-traumatic. epiphora. Methods: In the last 5 years, 37 patients were treated for lacrimal apparatus injury as a result of cephalic trauma: in 16 there was an isolated lacrimal injury and in 21 were documented fractures combined with lacrimal damage. Results: In 16 patients who had only deep lesions, was performed a reconstruction after location lesion localization, and only in 4 cases, because of the gravity of the lesion, it was decided to perform a reconstruction in a second time. In the remaining 21 patients the facial fractures were treated before lacrimal injuries, whose reconstruction was carried out on a second time. Conclusions: The reconstruction of the cephalic district has to be based on the restoration of morpho-functional component and on the identification and treatment of lacrimal injuries. The reduction of fractures in our view should start from the lateral area (centripetal reconstruction) allowing to have a guide for alignment of the fracture lines. The objectives to be achieved in a facial trauma are therefore three: the maintenance of vital functions, the recovery of the function and the restoration of morphological and functional prior to the event
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
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
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