1,721,064 research outputs found
An in vitro evaluation of heat production during osteotomy preparation for dental implants with compressive osteotomes
Full text linkBACKGROUND:
To assess heat production using osteotomes under conditions simulating implant placement in D3, D4 bone.
MATERIAL AND METHODS:
Implant osteotomes were tested (Winsix, Biosafin, Italy). Site preparations were performed on porcine ribs through a compressive fashion. The ribs were partially immersed in a custom-made water bath/water pump system that maintained the baseline temperature at 36 °C. Temperatures generated at different depths (2, 5, and 9 mm) during a series of 25 osteotomies were measured using 3 thermocouples connected to a digital thermometer.
RESULTS:
The mean temperatures never exceeded 37 °C and were all significantly lower than those reported during preparation with standard implant drills. Statistical evaluation of the temperature during implant site preparation showed slight significant variations between the baseline values and those of the different depth preparations.
CONCLUSIONS:
Within the limits of this study, the production of heat during implant preparation using osteotomes shows significant variations at different depths. However, these variations are not clinically relevant because they never increased over the values that negatively affect bone that may jeopardize osseointegration
[Defecography in the diagnosis of fecal incontinence: an analysis of the receiver operating characteristic (ROC)].
No full textTwo groups of patients with altered bowel habit and pelvic floor dysfunction, but comparable epidemiologic characteristics (i.e. n = 105 each; mean age and SD 47.3 +/- 15.8 yrs vs. 54.9 +/- 16.7 yrs; range 15-80 yrs vs. 9-88 yrs; F/M ratio 28:1 vs. 2.6:1) with the exception of the absence (or presence) of fecal incontinence, were examined with defecography, taking into account criteria other than anorectal angle values and anorectal junction mobility. At the Receiver Operating Characteristic (ROC) analysis a "barium leak sign", occurring either at rest or on straining was found to be a highly reliable index of fecal incontinence (specificity: 100% and 92-93%, respectively, intraobserver agreement K value = 0.82, Z = 21.58, p 10 mm at rest; (b) poor stop test (inability to interrupt the barium stream); (c) rectal diameter > 6.5 cm and < 4 cm (abnormally increased and reduced compliance, respectively). Defecography is a useful diagnostic tool in fecal incontinence and should precede anal endosonography, manometry and electromyography for proper therapeutic decision-making and in risk conditions, e.g., in the patients about to undergo elective pelvic surgery
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
LO STUDIO EUROFARMCARE: SERVIZI DI SUPPORTO PER CAREGIVERS FAMILIARI DI ANZIANI IN EUROPA: SINTESI DEI PRINCIPALI RISULTATI
No full textSet-up and statistical validation of a new scoring system for obstructed defaecation syndrome.
No full textAbstract: Objective There is no objective means to assess the obstructed defaecation syndrome (ODS), to allow evaluation of outcome or to compare the efficacy of treatment including surgery. The study aimed to validate a disease-specific index to quantify severity to allow assessment of the results of treatment in clinical trials, to permit comparison between them.
Method Seventy-six patients with ODS and 30 healthy controls entered the study after proctologic and ano-rectal physiological investigation. Hirschsprung's disease and slow transit constipation were excluded. An eight-item questionnaire with four or five possible answers was administered by two independent researchers at two different times. The ODS score was the sum of all points with a maximum possible of 31 points. Agreement between the two operators was evaluated by the Kappa coefficient for each single item. The coefficient of repeatability (CR) was assessed by the Bland and Altman plot. The internal consistency was evaluated by the Crohnbach-alpha test. A cluster analysis was carried out on each clinical finding. The Mann-Whitney U-test was used to compare median ODS score between patients and controls.
Results The ODS score of the two operators was normally distributed and strongly correlated (r = 0.89). The correlation coefficient between the score assigned to each item by two operators ranged from 0.79 to 0.98. The degree of agreement between the operators was good and the two methods were reproducible (CR = 3.13). There was a significant difference between the mean ODS score for patients and controls (t = 20.70, P < 0.001). The Crohnbach alpha value for internal reliability was +0.513. Cluster analysis showed a different profile between cluster 1 (a nonhomogenous group including rectocoele, intussusception or perineal descent), and cluster 2 (pelvic dysynergia).
Conclusion The ODS score offers a validated severity of disease index in grading the severity of disease and monitoring the efficacy of therapy
Set-up and statistical validation of a new scoring system for obstructed defaecation syndrome.Colorectal Dis. 2008 Jan;10(1):84-8
No full textModifications of intestinal permeability test induced by biliopancreatic diversion: preliminary results.
No full textVariations 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
Different age-related effect of thymectomy in myastenia gravis: role of thymoma, zinc, thymulin, IL-2 and IL-6
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