20 research outputs found
RĂ©sultats de la chirurgie laparoscopique pour la hernie de lâaine: lâexpĂ©rience Tunisienne
La hernie de l'aine de l'adulte reste une affection frĂ©quente en chirurgie digestive. De nombreuses techniques de rĂ©paration ont Ă©tĂ© dĂ©crites Ă ce jour dont les procĂ©dĂ©s laparoscopiques. Deux mĂ©thodes furent rapidement adoptĂ©es par les diffĂ©rents praticiens pour le traitement chirurgical des hernies de l'aine par laparoscopie: la mĂ©thode laparoscopique totalement extra pĂ©ritonĂ©ale (TEP) et la mĂ©thode laparoscopique transpĂ©ritonĂ©ale (TAPP). Le but Ă©tait d'Ă©tudier la faisabilitĂ© de la cure de hernie de l'aine par coelioscopie et de dĂ©crire ses rĂ©sultats du point de vue rĂ©cidive herniaire et douleur post opĂ©ratoire. Ce travail Ă©tait une Ă©tude rĂ©trospective, uni centrique, et transversale, portant sur des patients opĂ©rĂ©s par des chirurgiens du service de chirurgie A La Rabta pour hernie de l'aine par voie laparoscopique, sur une pĂ©riode de 8 ans allant de janvier 2006 Ă dĂ©cembre 2013. Le principal critĂšre de jugement Ă©tait la rĂ©cidive herniaire. La douleur post opĂ©ratoire et les complications Ă©taient les critĂšres de jugement secondaires. Nous avons colligĂ©s 104 hernies chez 92 patients respectant les critĂšres d'inclusion de notre Ă©tude. La moyenne d'Ăąge de nos patients Ă©tait de 48 Ans (19-83). L'approche TAPP Ă©tait la plus utilisĂ©e: 94 cas (90%) TAPP contre 10 cas TEP. Aucune complication per opĂ©ratoires n'a Ă©tĂ© signalĂ©e. Le taux de conversion de notre sĂ©rie Ă©tait nul. La mortalitĂ© opĂ©ratoire Ă©tait aussi nulle. La morbiditĂ© postopĂ©ratoire Ă©tait de 5% (5 patients). Elle Ă©tait Ă type d'hĂ©matome dans 3 cas et de sĂ©rum dans 2 cas. La durĂ©e moyenne d'hospitalisation Ă©tait de 1.2 jours (1- 4jours). Le sĂ©jour post opĂ©ratoire n'avait pas dĂ©passĂ© 2 jours chez 94% des patients. Seulement 2 patients avaient prĂ©sentĂ© une rĂ©cidive. Les douleurs chroniques postopĂ©ratoires Ă©taient notĂ©es chez seulement 3 patients. Notre Ă©tude a montrĂ© que la cure de hernie de l'aine par laparoscopie a apportĂ© un confort considĂ©rable Ă nos patients en ce qui concerne les phĂ©nomĂšnes douloureux, les durĂ©es d'hospitalisation et d'arrĂȘt de travail. Les rĂ©sultats obtenus dans cette sĂ©rie sont bons et conformes aux rĂ©sultats dĂ©jĂ publiĂ©s dans la littĂ©rature. Ceci nous encourage Ă poursuivre l'utilisation de ces techniques et Ă contrĂŽler nos rĂ©sultats Ă plus long terme
Retroperitoneal Abscess: A Rare Localization of Tubercular Infection
Incidence of tuberculosis infection has considerably increased during the past 20 years due to the HIV pandemic and continues to be one of the most prevalent and deadly infections worldwide. Extrapulmonary tuberculosis lacks specific clinical manifestation and can mimic many diseases. It can invade neighbouring tissue and form a big cyst with manifesting clinical symptoms. We describe a rare case of 31-year-old immunocompetent man affected by a retroperitoneal abscess secondary to tubercular infection. Exploratory laparotomy and histopathological examinations of tissue were required for achieving diagnosis of tuberculosis. No pulmonary or spinal involvement was identified. The patient was successfully treated with standard four-drug antitubercular therapy
Crystal structure and Hirshfeld surface analysis of bis(2,6-diaminopyridinium) tetrachloridocobaltate(II)
In the title molecular salt, (C5H8N3)2[CoCl4], the cations are protonated at their pyridine N atoms and the anion is an almost regular tetrahedron. The crystal structure consists of alternating inorganic layers, built from tetrachloridocobaltate anions, and organic layers formed by protonated cations of 2,6-diaminopyridinium. The crystal packing is governed by C/NâH...Cl hydrogen-bonding interactions between the organic and the inorganic ions and Cl...Cl interactions. Moreover, the cations show a ÏâÏ stacking interaction [intercentroid distance = 3.763â
(2)â
Ă
]. The prevalence of these interactions is illustrated by an analysis of the three-dimensional Hirshfeld surface and by two-dimensional fingerprint plots
4-Azaniumyl-2,2,6,6-tetramethylpiperidin-1-ium dinitrate
In the crystal structure of the title salt, C9H22N22+·2NO3â, the piperidine ring of the dication adopts a chair conformation and the orientation of the CâNH3 bond is equatorial. The ions are linked by normal and bifurcated NâH...O hydrogen bonds in R22(6), two R42(8) and R34(14) graf-set motifs, generating a three-dimensional network
Crystal Structure, Spectroscopic Characterization, and Optical Properties of the Hybrid Compound (C7H11N2)(2)[CdCl4]center dot 0.5H(2)O
A preparation procedure for the title compound (C7H11N2)(2)[CdCl4]center dot 0.5H(2)O (C7H11N2=4-(dimethylamino) pyridinium) was developed and gave good yields and purity. The Cd(II) ion is coordinated in a slightly distorted tetrahedral environment by four chlorides. The crystal arrangement shows a layered structure with alternating organic and inorganic layers parallel to the (001) plane and located at x=n+1/2 (n is an element of Z). In the crystal, the organic and inorganic layers are linked by C-H center dot center dot center dot Cl, C-H center dot center dot center dot O, N-H center dot center dot center dot Cl and N-H center dot center dot center dot O hydrogen bonding interactions. Hirshfeld surface analysis and fingerprint plots of the structure reveal that molecular packing is governed by hydrogen bonds and pi-stacking. The UV-Vis diffuse reflectance spectrum allowed us to determine a direct band gap of 3.596 eV with a semiconducting character, using the Tauc-extrapolation method. The observed photoluminescence band with a maximum at 562 nm is assigned to excited pi-pi* states in the 4-(dimethylamino)pyridinium cation. CCDC: 2136319
Crystal structure, vibrational spectra, optical properties and thermal behavior of the 1D perovskite (2-amino-4-methylpyridinium)trichlorocadmate(II) (C6H9N2)(1)(infinity)[CdCl3]
The organic-inorganic hybrid compound (2-amino-4-methylpyridinium) trichlorocadmate(II), (C6H9N2)(1)(infinity)[CdCl3] was prepared in crystalline form by solvent evaporation at room temperature. Infrared and Raman spectra allowed tracing the entities of the organic aromatic cation and the inorganic (infinity CdCln)-Cd-1 scaffold. X-ray diffraction showed that the compound crystallizes in the orthorhombic system in the centrosymmetric space group Pnma and has a one-dimensional (1 D) perovskite structure. Hirshfeld surface analyses (d(norm) and shape index) of the studied structure, as well as its fingerprints, allowed us to identify and quantify the intermolecular interactions such as H bonds and pi stacking. UV-visible absorption spectroscopy allowed us to estimate the direct band gap using the Tauc-extrapolation method. From this, we conclude a semiconducting character of the compound with a band gap of about 3.5 eV. Photoluminescence was observed with maxima at 351 and 388 nm when excited at 312 nm and can be traced to excited pi-pi* states in the organic cation. Thermogravimetric and differential thermal analysis showed that the compound is stable up to 200 degrees C and decomposes stepwise
Structure cristalline et analyses thermique et de surface Hirshfeld du diperchlorate de 4-azaniumyl-2,2,6,6-tétraméthylpipéridin-1-ium
The synthesis of 4-azaniumyl-2,2,6,6-tetramethylpiperidin-1-ium diperchlorate, C9H22N22+·2ClO4â, was carried out from an aqueous reaction of perchloric acid with 4-amino-2,2,6,6-tetramethylpiperidine. This compound was characterized by TGAâDSC analysis and single-crystal X-ray diffraction. The piperidine ring of the dication adopts a chair conformation and the orientation of the CâNH3 bond is equatorial. One of the two crystallographically independent perchlorate anions exhibits disorder [occupancies 0.625â
(7) and 0.375â
(7)]. The crystal packing is constituted by a succession of mixed layers parallel to the (-102) plane, made up of C9H22N22+ dications and ClO4â anions. These ions are linked by normal and bifurcated NâH...O hydrogen bonds with R44(12) graph-set motifs, generating a two-dimensional network. The intermolecular interactions in the crystal structure were quantified and analysed using Hirshfeld surface analysis
Crystal structure, Hirshfeld surface analysis and energy framework calculation of the first oxoanion salt containing 1,3-cyclohexanebis(methylammonium): [3-(azaniumylmethyl)cyclohexyl]methanaminium dinitrate
The title salt, C8H20N22+·2NO3â, was obtained by a reaction between 1,3-cyclohexanebis(methylamine) and nitric acid. The cyclohexane ring of the organic cation is in a chair conformation with the methylammonium substituents in the equatorial positions and the two terminal ammonium groups in a trans conformation. In the crystal, mixed cationâanion layers lying parallel to the (010) plane are formed through NâH...O hydrogen-bonding interactions; these layers are formed by infinite undulating chains running parallel to the [001] direction. The overall intermolecular interactions involved in the structure were quantified and fully described by Hirshfeld surface analysis. In addition, energy-framework calculations were used to analyse and visualize the three-dimensional topology of the crystal packing. The electrostatic energy framework is dominant over the dispersion energy framework