1,720,967 research outputs found
Late seroma formation after breast surgery with textured silicone implants: a problem worth bearing in mind.
No full textThe use of mammary implants may lead to a variety of complications. The most common early complications are seroma and haematoma formation and acute infection. The most common delayed complication is capsular contracture and implant failure (e.g. leaking, rupture). Late haematoma and seroma accumulation within the capsule have seldom been reported in the literature; indeed, no data on the incidence of these complications are available, nor are there any theories on their etiology or on how to avoid them. Cases of late haematoma and seroma unrelated to trauma have been strictly associated with textured or polyurethane implants.
We present a series of eight late seromas in patients who underwent breast augmentation or breast reconstruction using textured implants. All the patients presented a painless, progressive enlargement of one breast. Four patients referred a history of trauma some days before the appearance of the symptoms.
We performed an ultrasound-guided percutaneous needle aspiration of the fluid in all eight patients. Symptoms recurred in all the patients within days of seroma evacuation, following which a decision was taken to reoperate to drain the serous fluid and change the prosthesis.
During the 1-year follow-up, no recurrence of the seroma occurred in any of the patients, nor were any local or general complications observed.
If patients complain of unexpected breast enlargement following mammary implantation surgery, the physician should first rule out infection, then investigate the possibility of friction irritation from either a fold in the device or rubbing of a textured implant
"Component separation" technique and panniculectomy for repair of incisional hernia.
No full textBACKGROUND: Primary incisional hernia repair is rarely successful, with recurrence rates ranging from 18% to 62%. We describe the integration of "components separation" herniorrhaphy with panniculectomy.
METHODS: Twenty-two patients were treated. Standard panniculectomies and component separation were performed. Intravesical pressure was measured preoperatively, intraoperatively, and postoperatively. Measurement variations were compared using the Wilcoxon test. Complications or hernia recurrence were evaluated. The clinical appearance of the abdomen was subjectively evaluated by patients.
RESULTS: Secure abdominal defect closure with midline approximation of the fascia was achieved in all patients. No major early complications occurred. Hernia recurred in 1 patient (4.5%). Intra-abdominal pressure increased in all the patients in our series but remained well below the danger level. Fifteen patients were fully satisfied with the appearance of their abdomen, whereas 7 were satisfied.
CONCLUSIONS: Abdominal component separation provides a reliable autologous reconstructive option. Hernia repair combined with abdominoplasty provides functional and esthetic benefits
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
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