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Search Results: 1 - 10 of 335058 matches for " Laura; Valdevenito S "
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Infección urinaria recurrente en la mujer
Valdevenito S,Juan Pablo;
Revista chilena de infectología , 2008, DOI: 10.4067/S0716-10182008000400004
Abstract: recurrent urinary tract infections (r-uti) are common among women even though they generally have a normal urinary tract. women with r-uti have an increased susceptibility to vaginal colonization with uropathogens due to a greater propensity for them to adhere to their epithelial cells. risk factors include frequent sexual intercourse, spermicide use, first uti at an early age and maternal history of uti. prevention of recurrences can be done with low-dose continuous antimicrobial prophylaxis or with post-coital antimicrobial prophylaxis, a method that may be more efficient and acceptable. estrogen replacement therapy using a vaginal administration in postmenopausal women is also effective in preventing r-uti. the vaginal vaccine only diminishes percentage of women with escherichia coli uti. the oral vaccine reduces r-uti with inferior results than antimicrobial prophylaxis; cranberry intake shows some evidence in favor, although further trials are needed. finally r-uti can also be effectively managed with self-start antimicrobial therapy
Infección urinaria recurrente en la mujer Recurrent urinary tract infection in women
Juan Pablo Valdevenito S
Revista chilena de infectología , 2008,
Abstract: La infección urinaria recurrente (ITU-R) es común en mujeres que generalmente no presentan alteraciones del tracto urinario, pero que tienen una mayor predisposición a la colonización vaginal por uropa-tógenos que se adhieren más ávidamente a sus células epiteliales. Las relaciones sexuales frecuentes, el uso de espermicidas, el antecedente de ITU a corta edad y la historia materna de ITU son factores de riesgo. La prevención de la recurrencia puede hacerse con profilaxis antimicrobiana continua a dosis baja o post-coital. La terapia de reemplazo estrogénico en la mujer post-menopáusica es efectiva en prevenir ITU-R, recomendándose su uso vía vaginal. La vacuna vaginal sólo disminuye el porcentaje de pacientes con ITU por Escherichia coli; la vacuna oral disminuye las ITU-R aunque con resultados inferiores a la profilaxis antimicrobiana. La ingesta de arándano rojo muestra alguna evidencia a favor, aunque insuficiente. Finalmente, la ITU-R también puede manejarse con terapia antimicrobiana iniciada por la paciente Recurrent urinary tract infections (R-UTI) are common among women even though they generally have a normal urinary tract. Women with R-UTI have an increased susceptibility to vaginal colonization with uropathogens due to a greater propensity for them to adhere to their epithelial cells. Risk factors include frequent sexual intercourse, spermicide use, first UTI at an early age and maternal history of UTI. Prevention of recurrences can be done with low-dose continuous antimicrobial prophylaxis or with post-coital antimicrobial prophylaxis, a method that may be more efficient and acceptable. Estrogen replacement therapy using a vaginal administration in postmenopausal women is also effective in preventing R-UTI. The vaginal vaccine only diminishes percentage of women with Escherichia coli UTI. The oral vaccine reduces R-UTI with inferior results than antimicrobial prophylaxis; Cranberry intake shows some evidence in favor, although further trials are needed. Finally R-UTI can also be effectively managed with self-start antimicrobial therapy
Oclusión temporal de arterias ilíacas internas en cesárea-histerectomía por placenta acreta: enfoque multidisciplinario
Hasbun H,Jorge; Palaviccini R,Jaime; Osorio P,Raúl; Cerda SM,Sergio; Castro L,Magdalena; Carre?o T,Laura; Valdevenito S,Raúl;
Revista chilena de obstetricia y ginecología , 2012, DOI: 10.4067/S0717-75262012000100012
Abstract: objective: to report the treatment of a clinical case with central placenta previa accreta. during pregnancy image diagnosis (ultrasound and magnetic resonance imaging) revealed localization and penetration of the placenta into the uterine wall. just before delivery to reduce the bloss loss and avoid maternal hypotension and facilitate surgery, intra arterial balloons were placed on both hypogastric arteries by the radiologist; intravascular monitoring was installed by anesthesist and urologist put in ureteral catheters. the delivery was by cesarean section and followed by histerectomy leaving the placenta in situ. the case correspond to a woman of 32 years old that had 2 previous cesarean section. during this pregnancy bled a few times and was delivered at weeks 36th. during surgery she was stable, requiring one unit of red blood cells and four liters of coloids and crystaloids. post-operative course was with no problems. the pathologist report a placenta percreta with no bladder involvement, agreeing with the vascular lakes image and the cystoscopy. conclusion: this case reveals the benefits of multidisciplinary approach to manage severe complications of pregnancy such as placenta previa and the degree of accretism.
Ciprofloxacino oral discontinuo en resección transuretral de próstata: Resultados iniciales
Valdevenito,Juan Pablo; Valdevenito,Raúl; Gómez,álvaro; Russo,Moisés;
Archivos Espa?oles de Urología (Ed. impresa) , 2006, DOI: 10.4321/S0004-06142006000300008
Abstract: objetives: to describe the rate of infectious complications using a discontinuous scheme of oral ciprofloxacin in transurethral resection of the prostate (tur-p). to try to weigh the influence of clinical background, operative complications and postoperative outcome on the development of such complications. to compare the results to those obtained with equal methodology using antibiotics in a continual scheme until the catheter removal. method: a prospective open study was designed including 53 consecutive patients with sterile urine and without indwelling catheter subjected to tur-p. patients received oral ciprofloxacin 500 mg (4 doses) before going to the surgical room, the night of surgery, next morning of surgery and before catheter removal. three patients were excluded after incorporation (5,6%) and all the remainders completed follow up. results: fifty patients are analyzed. fever was present in 8 patients (16%). systemic clinical infection was present in 3 patients (6%). no isolated-germ postoperative bacteriuria was present. previous urinary infection (uti) was statistically associated to systemic clinical infection (p= 0,007) and to active chronic prostatitis on operative biopsy (p= 0,002). conclusion: probably previous uti antecedent made less advisable the discontinuous scheme use in tur-p, although a greater number of patients is needed to confirm these statement. when these results are compared to those using antibiotics in a continual scheme until catheter removal, a significant higher frequency of fever is seen (p= 0,022).
Hernioplastia y orquidectomía Hernioplasty and orchidectomy
Ronald de la Cuadra E,Owen Korn O,Raul Valdevenito S,Lucía Volosky H
Revista Chilena de Cirugía , 2006,
Abstract: Estudio prospectivo en pacientes con hernia inguinal irreductible crónica y portadores de patología médica severa, con el propósito de efectuar una intervención con menor riesgo quirúrgico, para lo cual se programó realizar una orquidectomía en forma concomitante con el procedimiento de hernioplastía,. De común acuerdo con cada paciente y debidamente avalado por un consentimiento informado legal específico para patología herniaria, entre Julio de 2000 a Junio de 2005 se operaron 8 pacientes, realizándose 9 orquidectomías. El promedio de edad fue de 66,6 a os, con valores extremos de 41 y 85 a os. Cinco pacientes tenían patología cardiovascular severa asociada, con un promedio de edad de 76 a os, nueve más que en la serie general; dos tenían déficit mental significativo. En tres pacientes se asoció a cirugía herniaria previa; en cuatro un hidrocele de tama o considerable, con bilateralidad en uno. El saco herniario contenía principalmente ileon y colon; elementos herniarios deslizados: colon derecho en tres, sigmoides en uno y vejiga y uréteres en uno. El tiempo operatorio promedio, fue de 105 minutos, haciendo excepción de dos pacientes. La estadía hospitalaria de fue de 84 horas, a excepción del paciente con sepsis renal. No hubo complicaciones intraoperatorias. La evolución postoperatoria fue satisfactoria en siete pacientes. Las complicaciones quirúrgicas fueron mínimas. No hubo mortalidad en la serie. Conclusión: en pacientes con edad avanzada con patología herniaria irreductible crónica y patología médica severa, el agregar la exéresis testicular a la hernioplastía, disminuye el tiempo quirúrgico, permite una estadía hospitalaria más breve y un escaso compromiso local Background: In patients with a high surgical risk, a concomitant orchidectomy may reduce the surgical risk and time, and improve the results of a hernioplasty. Aim: To report the experience of concomitant orchidectomy during hernia repair. Material and methods: Prospective study of patients with chronic irreducible inguinal hernia and with severe medical conditions that increased surgical risk, in whom a concomitant orchidectomy was performed during the hernia repair. All were informed about the procedure and gave their consent. Results: Eight patients aged 41 to 85 years, were operated between 2000 and 2005. Nine orchidectomies were performed. Five patients, with a mean age of 76 years, had severe cardiovascular diseases and two patients had mental deficiency. Three had a previous hernia repair, four had a hydrocele, that was bilateral in one. The hernia sac contained mainly colon an
NEUROMODULACIóN EN PATOLOGíAS DE PISO PéLVICO
Manríquez G,Valentín; Sandoval S,César; Lecannelier A,Jorge; Naser N,Michel; Guzmán R,Rodrigo; Valdevenito S,Raúl; Abedrapo M,Mario;
Revista chilena de obstetricia y ginecología , 2010, DOI: 10.4067/S0717-75262010000100010
Abstract: through hystory, neuromodulation have proved to be an effective alternative of management of pelvic floor dysfunctions. several technical alternatives try to reach a same therapeutic objetive, however, depending on the severity and type of symptom their succes differ. we describe the clinical and technical aspects related to those different technics so as the mechanisms of action that are propose for the neuromodulation.
Hernioplastia y orquidectomía
de la Cuadra E,Ronald; Korn O,Owen; Valdevenito S,Raul; Volosky H,Lucía; Rappoport S,Jaime; Bezama M,Jorge;
Revista chilena de cirugía , 2006, DOI: 10.4067/S0718-40262006000600005
Abstract: background: in patients with a high surgical risk, a concomitant orchidectomy may reduce the surgical risk and time, and improve the results of a hernioplasty. aim: to report the experience of concomitant orchidectomy during hernia repair. material and methods: prospective study of patients with chronic irreducible inguinal hernia and with severe medical conditions that increased surgical risk, in whom a concomitant orchidectomy was performed during the hernia repair. all were informed about the procedure and gave their consent. results: eight patients aged 41 to 85 years, were operated between 2000 and 2005. nine orchidectomies were performed. five patients, with a mean age of 76 years, had severe cardiovascular diseases and two patients had mental deficiency. three had a previous hernia repair, four had a hydrocele, that was bilateral in one. the hernia sac contained mainly colon and ileum. mean operative time was 105 minutes in six patients, 6 hours in one patient that required the reduction of a giant hydrocele and four hours in one patient that required the reconstruction of the inguinal wall. as postoperative complications, one patient had a sepsis of renal origin, one patient had delirium and the patient with the giant hydrocele had a wound dehiscence. the mean hospital stay among uncomplicated patients was 84 hours. conclusions: in patients with a poor surgical risk, orchidectomy reduces the operative time of inguinal hernia repair and reduces hospital stay
Review. Comparative structures and evolution of mammalian lipase I (LIPI) genes and proteins: A close relative of vertebrate phospholipase LIPH  [PDF]
Roger S. Holmes, Laura A. Cox
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.412A142
Abstract:

Lipase I (enzyme name LIPI or LPDL) (gene name LIPI [human] or Lipi [mouse]) is a phospholipase which generates 2-acyl lysophosphatidic acid (LPA), a lipid mediator required for maintaining homeostasis of diverse biological functions and in activating cell surface recaptors. Bioinformatic methods were used to predict the amino acid sequences, secondary and tertiary structures and gene locations for LIPI genes and encoded proteins using data from several mammalian genome projects. LIPI is located on human chromosome 21 and is distinct from other phospholipase A1-like genes (LIPH and PS-PLA1). Mammalian LIPI genes contained 10 (human) or 11 (mouse) coding exons transcribed predominantly on the negative DNA strand. Mammalian LIPI protein subunits shared 61% - 99% sequence identities and exhibited sequence alignments and identities for key LIPI amino acid residues as well as extensive conservation of predicted secondary and tertiary structures with those previously reported for pancreatic lipase (PL), with “N-signal peptide”, “lipase” and “plat” structural domains. Comparative studies of mammalian LIPI sequences with LIPH, PS-PLA1 and pancreatic lipase (PL) confirmed predictions for LIPI N-terminal signal peptides (residues 1 - 15); predominantly conserved mammalian LIPI N-glycosylation sites (63NNSL and 396NISS for human LIPI); active site “triad” residues (Ser159; Asp183; His253); disulfide bond residues (238 - 251; 275 - 286; 289 - 297; 436 - 455); and a 12 residue “active site lid”, which is shorter than for other lipases examined. Phylogenetic analyses supported a hypothesis that LIPI arose from a vertebrate LIPH gene duplication event within a mammalian common ancestral genome. In addition, LIPI, LIPH and PL-PLA1 genes were distinct from the vascular lipase (LIPG, LIPC and LPL) and pancreatic lipase (PL) gene families.

Heavy Crude Oil Upgrading: Jazmin Crude  [PDF]
Jesús Alirio Carrillo, Laura Milena Corredor
Advances in Chemical Engineering and Science (ACES) , 2013, DOI: 10.4236/aces.2013.34A1007
Abstract: The Jazmin crude oil is located at the heart of Middle Magdalena in Colombia. It is heavy and sour crude oil with 43 wt.% of vacuum bottoms. It cannot be processed at the conventional refinery without being mixed with other lighter crudes, and should be upgraded to produce synthetic crude with higher concentration of distillates and lower acidity and carbon content. In this paper eight upgrading alternatives are presented. The alternatives include the processing of the crude, reduced crude and vacuum bottoms of the Jazmin crude oil using the following technologies: Distillation, solvent deasphalting, visbreaking, Delayed Coking, and Hydrotreating. The experiments were conducted at pilot scale, and there were used standard analysis techniques such as ASTM. In this study it was found that Jazmine crude oil and its heavy components produce high distillate yields when they were processed with thermal conversion processes. In addition those processes reduce the products acidity. Within the analyzed scheme the one corresponding to the visbreaking of the crude oil and the Delayed Coking of the vacuum bottoms from the visbreaking is perhaps the most attractive, giving 5.9 wt.% of gas, 78.2 wt.% of distillates and 15.9 wt.% of coke.
Aporte de los rayos x en el sindrome de ni?o agredido
Quirós Abarca,Laura;
Medicina Legal de Costa Rica , 2012,
Abstract: the role of x-rays in cases of suspected child abuse is not only identify the degree of injury but also evaluating all imaging findings that point to a differential diagnosis, whose aim is to guide the physician toward a diagnosis safe and avoid diagnostic errors on one side, thereby achieving highlight such cases of childhood aggression, preventing this in the new lower risk. it requires the clinician facing a diagnosis of suspected physical abuse, know what the specific lesions of diagnostic confirmation, and which is the most suitable according to the clinical and patient age
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