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[en] A patient was referred to us with a tightly knotted Swan-Ganz catheter. The catheter could not be removed by conventional simple methods. We describe a minimally invasive means of removal of the catheter using an Amplatz gooseneck snare and an angioplasty balloon. This allowed the Catheter to be removed without trauma.
[en] We report our experience with Guenter Tulip filter placement indications, retrievals, and procedural problems, with emphasis on alternative retrieval techniques. We have identified 92 consecutive patients in whom a Guenter Tulip filter was placed and filter removal attempted. We recorded patient demographic information, filter placement and retrieval indications, procedures, standard and nonstandard filter retrieval techniques, complications, and clinical outcomes. The mean time to retrieval for those who experienced filter strut penetration was statistically significant [F(1,90) = 8.55, p = 0.004]. Filter strut(s) IVC penetration and successful retrieval were found to be statistically significant (p = 0.043). The filter hook-IVC relationship correlated with successful retrieval. A modified guidewire loop technique was applied in 8 of 10 cases where the hook appeared to penetrate the IVC wall and could not be engaged with a loop snare catheter, providing additional technical success in 6 of 8 (75%). Therefore, the total filter retrieval success increased from 88 to 95%. In conclusion, the Guenter Tulip filter has high successful retrieval rates with low rates of complication. Additional maneuvers such as a guidewire loop method can be used to improve retrieval success rates when the filter hook is endothelialized.
[en] Anionic exchange resins were research with respect its capacity for removal arsenic content in water. Water of well V from Zimapan Hidalgo Mexico was used to make this research, because this water have a mean concentration of 480±11μg-L''-1 of arsenic and it is available as drinking water. The exchange resins employed were two strong anionic, one macroreticular (IRA-900) and other gel type (IRA-400), as soon as one third anionic weak macroreticular type (IRA-96). The experiments carried with this resins showing that IRA-900 has highest efficient in the process of arsenic removal from drinking water, because, it showed a treatment capacity of 700 Vagua. Vres''-1; while that capacities of IRA-400 e IRA-96 resins were 320 and 52 Vagua .Vres''-1 respectively. The mean concentration of arsenic residue in the treatise water was 24 μg.l''-1 and it is within the maximum level permissible by Mexican official norm for drinking water. (Author) 12 refs
[en] Order this fact sheet now to learn how replacing the ''closed drum'' debarking technology method used in the forest industry with the ''open drum'' method saves time and production costs, and increases the economic value of wood products by inflicting less damage on logs so that they can be used for high-value economic products
[en] The quality of finite steel products depends on steel content of hydrogen. On steel elaboration, in order to remove the dissolved hydrogen, at least one ladle secondary treatment is needed. The paper introduces the results obtained in the increase of hydrogen removal output, during steel secondary treatment inside the LF installation. Correlations were established between the hydrogen removal rate and the parameters of the secondary treatment (bubbling flow, bubbling time and bubbling pressures)
[en] An efficient link-removal strategy, called the variance-of-neighbor-degree-reduction (VNDR) strategy, for enhancing the traffic capacity of scale-free networks is proposed in this paper. The VNDR strategy, which considers the important role of hub nodes, balances the amounts of packets routed from each node to the node's neighbors. Compared against the outcomes of strategies that remove links among hub nodes, our results show that the traffic capacity can be greatly enhanced, especially under the shortest path routing strategy. It is also found that the average transport time is effectively reduced by using the VNDR strategy only under the shortest path routing strategy
[en] In the seminar, the differences between capacity operation and stoppage are discussed with a view to operative availability, method of operation of the systems. The results of the evaluation of the international operating experience for occurrences during shut-down are presented. Possible malfunction sequences are discussed, including failure of the after-heat removal and the removal of the boron from the water circuits. Knowledge gained from the in-depth analysis of selected sequences as regards effects on the plant, possibilities of recognition, times for countermeasures, consequences for technology and personnel, are described. (author) 7 tabs. refs
[en] For the management of non-palpable lesions of the breast, it has been developed for less than a decade the technique of radio-guided localization of occult lesions (ROLL) which is to locate the lesion by stereotactic or ultrasound and tagged with a radioactive tracer and then make their removal or resection using intraoperative gamma probe. We decided to use this technique in a suspicious lesion located in left inguinal region in a patient with a history of low-grade myxoid liposarcoma
[es]Para el manejo de las lesiones no palpables de la mama se ha desarrollado desde hace menos de una decada la tecnica de localizacion radio guiada de lesiones ocultas (ROLL) la cual consiste en ubicar la lesion por estereotaxia o ecografia y marcarla con un trazador radioactivo para luego realizar su extirpacion o reseccion intraoperatoria utilizando una gamma sonda. Nosotros decidimos utilizar esta tecnica, en una lesion sospechosa localizada en region inguinal izquierda, en una paciente con un antecedente de liposarcoma mixoide de bajo grado a quien en TAC de control se le encontro la masa descrita. Se realiza localizacion de la lesion guiada por TAC y marcacion del centro de la misma con la inyeccion (a traves de espinocath 22 G) de macro agregados de albumina (MAA) marcados con 10 MBq de tecnecio 99m (Tc99m) se le realizo imagen en medicina nuclear para comprobar que la actividad inyectada se encontraba focal. La paciente es llevada a cirugia y bajo anestesia raquidea, se realiza, la diseccion en profundidad de la region inguinal, medial a la vena femoral, se identifica por gama sonda y palpacion masa de consistencia dura, que marca cerca de 990 cuentas por segundo in vivo, se continua la diseccion de la lesion, logrando rodearla y resecarla en su totalidad, reseccion completa de la masa y verificacion con gama sonda de la marcacion, la cual llega hasta 10500 cuentas por segundo ex vivo, se procede a realizar verificacion del campo operatorio con gama sonda, sin obtener senal confirmando la reseccion de la lesion previamente radio marcada. La paciente es dada de alta, con manejo ambulatorio. Ventajas: Cirugia menor, Menor tiempo quirurgico, Anestesia regional, Procedimiento ambulatorio, Menor invasion, No necesidad de transfusion, Preservacion de extremidad, Evita Utilizar UCI, No requiere drenajes. CONCLUSION: La tecnica ROLL podria ser utilizada en lesiones no palpables de tejidos blandos en localizaciones diferentes al seno. (author)