380 research outputs found
Characterization of Escherichia coli K12 mutants that can use glycine as sole source of carbon and energy
Circulation symbolique des désordres fonctionnels gastro-intestinaux : étude réalisée dans les familles québécoises francophones
La présente étude en anthropologie médicale propose d’examiner la dimension
socioculturelle des désordres fonctionnels gastro-intestinaux (DFGI) en considérant
l’expérience de six familles québécoises francophones où un pré-adolescent souffre de
symptômes associés à un DFGI. Le regard anthropologique qui nous a permis
d’appréhender ces expériences de douleur s’appuie principalement sur les travaux issus de
la psychiatrie transculturelle, de même que sur les influences de l’anthropologie du corps et
de la phénoménologie. À travers ce regard, la somatisation est considérée comme une
forme de communication de la douleur, modulée de manière importante par le contexte
socioculturel et représentative d’une certaine souffrance sociale. Ce langage ponctué
d’idiomes de détresse et de métaphores permet aux individus d’exprimer leur souffrance et
de mobiliser un soutien social efficace pour la prendre en charge. Dès lors, le corps doit
être perçu comme un corps vécu; comme un lieu de marquage du social, mais également
comme un instrument de positionnement social et une frontière où des mouvements
d’appartenance et de divergence sont exprimés.
Par l’exploration, dans chacune de ces familles, des différentes manières de décrire
les symptômes, de les interpréter et d’y réagir, nous avons procédé à la reconstruction
d’histoires particulières pour voir comment ces symptômes venaient s’inscrire dans la
biographie individuelle et familiale. À travers l’analyse de la construction du sens de la
douleur et des pratiques adoptées pour la contrôler, la douleur abdominale nous est apparue
comme intimement liée à l’expérience sociale et la médicalisation comme une base pour
une meilleure appréhension de cette douleur. Par ses maux de ventre, l’enfant exprime ses
limites corporelles et sociales. À l’intérieur de la famille, l’expression de cette limite peut
être parfois dérangeante, confrontante, et même entraîner des rapports conflictuels. C’est
ainsi qu’est « négociée » une approche appropriée à la douleur qui redéfinit les rôles de
chacun par rapport à cette dernière. Le ventre devient le médiateur qui permet le
compromis nécessaire au « vivre ensemble » ou au « vivre dans le monde ». À l’issue de
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cette négociation qui implique la participation du médecin traitant, les rapports sont parfois
reconstruits et la relation au monde et aux autres peut devenir différente.This study in medical anthropology is an exploration of the sociocultural dimension
of functional gastrointestinal disorders (FGID) considering the experience of six frenchspeaking
families of Québec where a pre-teenager suffers from symptoms associated with
FGID. The anthropological perspective that allowed us to approach these experiences of
pain is based mainly on work from tanscultural psychiatry, as well as on the influences of
the anthropology of the body and phenomenology. Through this view, somatization is
considered to be a form of communication of distress, modulated in an important way by
sociocultural context and reflecting social suffering. This language punctuated with idioms
of distress and metaphors allows individuals to express their suffering and to mobilize an
efficient social support. From then on, the body must be seen as a lived body; as a place of
social marking, but also as an instrument of social positioning and a border where
movements of belonging and divergence are expressed.
By exploring, in each of these families, different ways of describing the symptoms,
interpret them and respond to them, we proceeded to the reconstruction of particular stories
to find how these symptoms were part of the individual’s and family’s biography. Through
the analysis of how those families make sense of the pain and adopte practices to control it,
abdominal pain appeared to us as intimately linked to social experience and the
medicalization as a basis for a better apprehension of this suffering. While telling his or her
pain, the child is also expressing his or her bodily and social boundaries. Within the family,
the expression of this limit can sometimes be disturbing, confrontational, even lead to
conflict. Thus was “negociated” an appropriate approach to pain that redefines the roles of
each in relation to it. The abdomen becomes the mediator who allows the compromises
needed to “live together” or to “live in the world”. Following this “negociation” that
involves the participation of the attending physician, bonding within the family is
sometimes positively transformed and the relation to the world and to the others can
become different
International changes in end-of-life practices over time: a systematic review.
BACKGROUND: End-of-life policies are hotly debated in many countries, with international evidence frequently used to support or oppose legal reforms. Existing reviews are limited by their focus on specific practices or selected jurisdictions. The objective is to review international time trends in end-of-life practices. METHODS: We conducted a systematic review of empirical studies on medical end-of-life practices, including treatment withdrawal, the use of drugs for symptom management, and the intentional use of lethal drugs. A search strategy was conducted in MEDLINE, EMBASE, Web of Science, Sociological Abstracts, PAIS International, Worldwide Political Science Abstracts, International Bibliography of the Social Sciences and CINAHL. We included studies that described physicians' actual practices and estimated annual frequency at the jurisdictional level. End-of-life practice frequencies were analyzed for variations over time, using logit regression. RESULTS: Among 8183 references, 39 jurisdiction-wide surveys conducted between 1990 and 2010 were identified. Of those, 22 surveys used sufficiently similar research methods to allow further statistical analysis. Significant differences were found across surveys in the frequency of treatment withdrawal, use of opiates or sedatives and the intentional use of lethal drugs (X 2 > 1000, p < 0.001 for all). Regression analyses showed increased use of opiates and sedatives over time (p < 0.001), which could reflect more intense symptom management at the end of life, or increase in these drugs to intentionally cause patients' death. CONCLUSION: The use of opiates and sedatives appears to have significantly increased over time between 1990 and 2010. Better distinction between practices with different legal status is required to properly interpret the policy significance of these changes. Research on the effects of public policies should take a comprehensive look at trends in end-of-life practice patterns and their associations with policy changes
Innervation of flexor hallucis longus muscle: an anatomical study for selective neurotomy
Background: The aim of the study was to describe the innervation of flexor hallucis longus (FHL) and obtain its surgical coordinates to facilitate selective neurotomy.
Materials and methods: Fifteen embalmed lower limbs of adults were studied. Anatomical dissections to isolate the innervating branches of FHL were performed. Distance between the supplying nerve of FHL, including both its origin
and termination, and the medial malleolus were obtained, providing anatomical coordinates beneficial for surgery.
Results: In all cases, FHL was innervated by only one branch, which originated from the tibial nerve. Mean distance between the medial malleolus and the nervous branch origin was 21.39 ± 3.05 cm. Mean distance between the medial malleolus and the nervous branch termination was 12.7 ± 1.59 cm. Length of the nervous branch innervating FHL was proportional to the length of the leg, measuring 8.69 ± 2.45 cm. All nerves were located 15–17.4 cm above the medial malleolus.
Conclusions: This anatomical study traced valuable surgical coordinates useful for performing selective peripheral neurotomy on the nerve branch innervating the FHL
Preclinical evaluation of the atraumatic nature of a spring loaded blunt tip coaxial needle in a swine model
International audiencePurpose: To test in vivo in an animal model the inherent atraumatic characteristics of the spring loaded blunt tip of a coaxial needle (Gangi-SoftGuard®, Apriomed, Sweden) against a conventional sharp stylet coaxial needle.Material and Methods: The study was conducted on a 40 kg male swine that was its own control for a vascular trauma model. The procedure consisted of voluntary attempts to transfix and traverse the artery/aorta under continuous real-time angiogram. Test and control needles were positioned in the region of the intercostal, superior mesenteric and femoral/deep femoral arteries, and in the aorta. Computed tomography (CT) angiogram was performed post trauma to check for bleeding in the form of extravasation of contrast material. One attempt was performed per site and needle, except for the intercostal artery where a second attempt was done with the test needle, resulting in a total of 4 and 5 tests for the control and test needles, respectively.Results: With the spring loaded blunt tip, no vascular trauma or bleeding was noted in the intercostal, superior mesenteric and femoral arteries, nor in the aorta. Vascular spasm that recovered with time was noted during the second attempt to transfix the same intercostal artery. There were consistent vascular traumas and bleedings with the control needle in all three tested arteries and the aorta, confirmed on angiogram as well as CT angiogram.Conclusion: The atraumatic feature offered by the spring loaded blunt tip prevented vascular trauma during the 5 attempts made to transfix the artery/aorta in a swin
Laparoscopic versus percutaneous cryotherapy for renal tumours: a systematic review and meta-analysis
Background: Cryoablation has emerged as an alternative to the more invasive partial nephrectomy for small renal masses. The approach can be carried out by two techniques, either laparoscopic cryoablation (LCA) or percutaneous cryoablation, (PCA) with CT guidance. We aimed to compare between the two procedures.
Materials and Methods: A systematic review and meta-analysis was conducted, including studies comparing the two techniques. Outcomes included incomplete ablation, late local recurrence, cancer-specific survival, procedure time, transfusion rates, hospital stay, and complications.
Results: A total of 1475 patients were included, 788 patients in the laparoscopic group and 687 patients in the percutaneous group. There was statistical difference favoring the laparoscopic group with regard to having less incomplete ablation (p = 0.0008) and higher cancer-specific survival patients (p = 0.04). However, there was longer hospital stays in the LCA group (p < 0.00001) and was found to be more costly than the PCA group. There was significantly more Clavien-I complications in the PCA group (p = 0.001) and more Clavien-III complications in the LCA group (p = 0.001). Otherwise, there were no differences in any other outcome parameter.
Conclusion: LCA was found to have less incomplete tumor ablation rates and higher cancer-specific survival rates, however, higher hospitalization time, more major complications (Clavien III), and was costlier compared with PCA
Interventional magnetic-resonance-guided cryotherapy combined with microsurgery for recurrent glioblastoma: An innovative treatment?
Background: Glioblastoma invariably recurs after primary Stupp tumor therapy and portends a poor prognosis. Cryoablation is a well-established treatment strategy for extra-cranial tumors. The safety and efficacy of interventional MR-guided cryoablation (iMRgC) has not been explored in recurrent glioblastoma. Methods: A retrospective analysis of data collected over a period of 24 months was performed. The inclusion criteria were: (I) recurrent glioblastoma despite Stupp protocol; (II) MRI followed by histological confirmation of recurrent glioblastoma; (III) location allowing iMRgC followed by microsurgical resection; and (IV) patient's consent. The primary objective was to assess feasibility in terms of complications. The secondary objective was to analyze progression-free survival (PFS), post-iMRgC survival and overall survival (OS). Results: The study included 6 patients, with a mean age of 67 ± 7.6 years [range, 54–70 years]. No major complications were observed. Median PFS was 7.5 months [IQR 3.75–9.75] and 6-month PFS was 50%. Median post-iMRgC survival was 9 months [IQR 7.5–15.25] and 6-month post-iMRgC survival was 80%. Median OS was 22.5 months [IQR 21.75–30]. Conclusion: iMRgC for recurrent glioblastoma demonstrated a good safety profile, with no major complications. Our data suggest improved PFS and OS. Trial registration number: No. IRB00011687 retrospectively registred on July 7th 2021
Renal Function After CT-Guided Cryoablation of Small Renal Tumours in Patients with Solitary Kidney:An Analysis of European Multinational Prospective EuRECA Registry
Purpose: Treatment of renal cell carcinoma (RCC) in patients with solitary kidneys remains challenging. The purpose of this multicentre cohort study was to explore how renal function is affected by percutaneous image-guided cryoablation in patients with solitary kidneys. Material and Methods: Data from the European Registry for Renal Cryoablation database were extracted on patients with RCC in solitary kidneys treated with image-guided, percutaneous cryoablation. Patients were excluded if they had multiple tumours, had received previous treatment of the tumour, or were treated with more than one cryoablation procedure. Pre- and post-treatment eGFR (within 3 months of the procedure) were compared. Results: Of 222 patients with solitary kidneys entered into the database, a total of 70 patients met inclusion criteria. The mean baseline eGFR was 55.8 ± 16.8 mL/min/1.73 m 2, and the mean 3-month post-operative eGFR was 49.6 ± 16.5 mL/min/1.73 m 2. Mean eGFR reduction was − 6.2 mL/min/1.73 m 2 corresponding to 11.1% (p = 0.01). No patients changed chronic kidney disease group to severe or end-stage chronic kidney disease (stage IV or V). No patients required post-procedure dialysis. Conclusion: Image-guided renal cryoablation appears to be safe and effective for renal function preservation in patients with RCC in a solitary kidney. Following cryoablation, all patients had preservation of renal function without the need for dialysis or progression in chronic kidney disease stage despite the statistically significant reduction in eGFR. Level of Evidence 3: Observational study. Graphical Abstract: (Figure presented.)</p
Les ajustements du droit aux nouvelles réalités de l’adoption internationale.
Cette recherche menée en partenariat avec le Secrétariat à l’adoption internationale et l’Association des centres
jeunesse du Québec nous a permis d’examiner certaines
dispositions législatives et pratiques relatives à l’adoption internationale dans une perspective comparative et interdisciplinaire (droit et anthropologie)
Robotically Assisted CBCT-Guided Needle Insertions: Preliminary Results in a Phantom Model
Aim
To compare robotic-assisted needle insertions performed under CBCT guidance to standard manual needle insertions.
Materials and Methods
A homemade robotic prototype was used by two operators to perform robotic and manual needle insertions on a custom-made phantom. Both the operators had no experience with the prototype before starting the trial. The primary endpoint was accuracy (i.e., the minimal distance between the needle tip and the center of the target) between robotic and manual insertions. Secondary endpoints included total procedure time and operators’ radiation exposure. The Wilcoxon test was used. A p value less than 0.05 was considered statistically significant.
Results
Thirty-three (17 manual, 16 robotic) needle insertions were performed. Mean accuracy for robotic insertion was 2.3 ± 0.9 mm (median 2.1; range 0.8–4.2) versus 2.3 ± 1 mm (median 2.1; range 0.7–4.4) for manual insertion (p = 0.84). Mean procedure time was 683 ± 57 s (median 670; range 611–849) for the robotic group versus 552 ± 40 s (median 548; range 486–621) for the manual group (p = 0.0002). Mean radiation exposure was 3.25 times less for the robotic insertion on comparison to manual insertion for the operator 1 (0.4 vs 1.3 µGy); and 4.15 times less for the operator 2 (1.9 vs 7.9 µGy).
Conclusion
The tested robotic prototype showed accuracy comparable to that achieved with manual punctures coupled to a significant reduction of operators’ radiation exposure. Further, in vivo studies are necessary to confirm the efficiency of the system
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