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Search Results: 1 - 10 of 617875 matches for " Ana María; Azócar P. "
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Evaluación longitudinal de la capacidad de transporte del peritoneo en diálisis peritoneal pediátrica A longitudinal study of the peritoneal transport capacity in paedriatríc peritoneal dialysis
Ana María Lillo D.,Marta Azócar P.,Angela Delucchi B.,Nelly Mazuela M.
Revista chilena de pediatría , 2000,
Abstract: El paciente pediátrico en diálisis peritoneal debe ser periódicamente evaluado para adecuar el procedimiento. Objetivo: Evaluar la evolución de los parámetros de adecuación dialítica en pacientes pediátricos urémicos en diálisis peritoneal crónica. Se estudiaron a 24 pacientes de la Unidad de Nefrología del Hospital Luis Calvo Mackenna, Universidad de Chile, ingresados al programa de diálisis peritoneal crónica entre enero 1995 y octubre 1999. Se evaluó la dosis de diálisis (Kt/V) peritoneal y residual, a los 3, 6 y 12 meses de iniciado el procedimiento, y el test de equilibrio peritoneal (PET) en los mismos tiempos. Se midió el crecimiento a través del puntaje Z talla/edad al ingreso y a los 12 meses de diálisis. Resultados: El valor promedio del Kt/V peritoneal y residual fue de 1,77 (DE = 1,08) y 1,04 (DE = 0,66) al inicio del procedimiento, y a los 12 meses los valores fueron 2,34 (DE = 0,89) y 0,35 (DE = 0,37) respectivamente. El cambio en el Kt/V residual mostró un p < 0,05. El PET promedio de glucosa y creatinina hora 4 fue de 0,72 (DE = 0,16) y 0,31 (DE = 0,12) al inicio, variando a 0,73 (DE = 0,2) y 0,40 (DE = 0,19) a los 12 meses de evolución, sin significancia estadística. El crecimiento expresado como Z talla/edad mostró al inicio del estudio un valor de -1,86 (DE = 1,06) y a los 12 meses de -2,05 (DE = 0,9). En el grupo de pacientes que ingresaron antes de los 12 meses de vida el Z talla/edad inicial vs el control a 1 a o después fue de -2,5 y -1,65 respectivamente. Conclusión: Los resultados muestran una estabilidad de la membrana peritoneal a lo largo del período estudiado, una pérdida de talla progresiva durante la terapia, y un crecimiento positivo en el grupo que inició la diálisis antes de los 12 meses The paedriatric patient treated with peritoneal dialysis must be periodically controlled in order to evaluate the adequacy of dialysis. Objective: To evaluate the change in the dialysis parameters in uraemic paedriatric patients under chronic peritoneal dialysis. 24 patients attending the Nephrology Unit in the Luis Calvo Mackenna Hospital, University of Chile, who entered the chronic peritoneal dialysis programme between January 1995 and October 1999 were enrolled. Peritoneal and residual dialysis dose (KTIV) were measured at 3, 6 and 12 months after starting dialysis as well as the peritoneal equilíbrium test. Growth was measured using the Z point height/age at the beginning of dialysis and after 12 months. Results: Average Kt/V peritoneal and residual dose was 1.77 (SD 1.05) and 1.04 (SD 0.64) at the beginning and 2.34 (SD 0.89) and
Evaluación longitudinal de la capacidad de transporte del peritoneo en diálisis peritoneal pediátrica
Lillo D.,Ana María; Azócar P.,Marta; Delucchi B.,Angela; Mazuela M.,Nelly; Cano Sch,Francisco;
Revista chilena de pediatría , 2000, DOI: 10.4067/S0370-41062000000200005
Abstract: the paedriatric patient treated with peritoneal dialysis must be periodically controlled in order to evaluate the adequacy of dialysis. objective: to evaluate the change in the dialysis parameters in uraemic paedriatric patients under chronic peritoneal dialysis. 24 patients attending the nephrology unit in the luis calvo mackenna hospital, university of chile, who entered the chronic peritoneal dialysis programme between january 1995 and october 1999 were enrolled. peritoneal and residual dialysis dose (ktiv) were measured at 3, 6 and 12 months after starting dialysis as well as the peritoneal equilíbrium test. growth was measured using the z point height/age at the beginning of dialysis and after 12 months. results: average kt/v peritoneal and residual dose was 1.77 (sd 1.05) and 1.04 (sd 0.64) at the beginning and 2.34 (sd 0.89) and 0.35 (sd 0.37) at 12 months respectively. the change in kt/v residual being significant (p < 0.05). the peritoneal equilibrium test for glucose and creatinine at 4 hours was 0.72 (sd 0. 16) and 0.31 (sd 0. 12) at the beginning, and at 12 months 0.73 (sd 0.20) and 0.40 (sd 0. 19) (p = ns). growth expressed as the z point changed from -1.86 (sd 1.06) to -2.05 (sd 0.90) at 12 months. in patients who were dialyzed before the age of 12 months the initial z point in comparison to 1 year later was -2.5 and -1.65 respectively. conclusions: the results show the stability of the peritoneal membrane during the study period, a progressive loss of stature during treatment and a positive growth in the group starting dialysis before the age of 12 months
Medición de 17-OH progesterona sanguínea en recién nacidos chilenos: Antecedentes para implementar un programa de detección neonata de hiperplasia suprarrenal congénita 17 OH progesterone measurement in blood in Chilean newborns, as a background to start a Congenital Adrenal Hyperplasia screening program
Andreina Cattani O,María Loreto Reyes G,Marta Azócar P,Julia Soto M
Revista médica de Chile , 2000,
Abstract: Background: The early diagnosis and therapy of congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency can prevent adrenal crises and erroneous gender assignment in affected newborns. To achieve this goal neonatal mass-screening programs have been developed, measuring blood 17 alpha-hydroxyprogesterone (17OHP). In Chile there is no experience with this type of screening. Aim: To develop a method for measuring 17OHP in filter paper blood specimens. To obtain reference ranges and determine neonatal 17OHP threshold levels according to gestational age and birth weight. To analyze factors affecting the cost-efficiency ratio and suggest recommendations for the organization of a neonatal screening program for CAH in Chile. Material and methods: Nine hundred twenty two newborns were studied. 17OHP was measured using double antibody radioimmunoassay in filter paper blood samples obtained 48 h after birth. Reference ranges were determined according to gestational age and birth weight and a cutoff point of 25 ng/ml was established. Results: Seventeen newborns had 17OHP over the cutoff value. They were assessed by a pediatric endocrinologist and in none of them, CAH was confirmed. Therefore the false positive rate of the determination was 1.8%. Among these newborns with elevated 17OHP, 66% had a birth weight below 1.5 kg and 5.8%, a birth weight between 1.5 and 2.5 kg. The cost per reported result was US $ l. Timing of the recall was between the 3 and 10 days of life. No newborn missed the follow-up. Discussion: To increase the cost-efficiency ratio of an eventual neonatal screening program, newborns with birth weights below 1.5 kg should be excluded and cutoff points should be defined according to birth weight (Rev Méd Chile 2000; 128: 1113-18)
Comportamiento de parámetros dialíticos y nutricionales en peritoneo diálisis pediátrica
Francisco Cano Sch,Verónica Marín B.,Marta Azócar P.,María A. Delucchi B.
Revista chilena de pediatría , 2003,
Abstract: El manejo de pacientes pediátricos en diálisis peritoneal requiere la vigilancia continua de la dosis de diálisis y el apoyo nutricional, para lograr el mejor crecimiento y desarrollo posibles en el ni o urémico. Para esto se requiere medir una serie de variables dialíticas y nutricionales que permitirán un ajuste continuo de nuestra terapia. Objetivos: 1) conocer el valor de diferentes parámetros dialíticos y nutricionales en ni os en diálisis peritoneal crónica, 2) calcular la dosis de diálisis (Kt/V), la velocidad de catabolismo proteico (VCP), el Equivalente de la Aparición de Nitrógeno Ureico (PNA), el Balance nitrogenado, el test de Equilibrio Peritoneal (PET) y 3) calcular la correlación entre ellas. Pacientes y Método: Se evaluó en forma prospectiva 15 ni os en diálisis peritoneal crónica, realizando 59 mediciones en 6 meses de seguimiento. Se controló mensualmente las variables clínicas: peso, talla, superficie corporal, volumen urinario y volumen de dializado de 24 hrs; se midió en plasma, orina y dializado en forma simultánea: creatinina, proteína, albúmina y nitrógeno ureico; y estudio ácido base y electrolitos en plasma. Se mantuvo un aporte proteico calórico según recomendaciones RDA (Recommended Dietary Allowances), y se calculó el Kt/Vurea peritoneal y residual mensual, el PET cada 6 meses, y la VCP, Balance Nitrogenado y PNA mensuales. Resultados: El Kt/V urea promedio residual y total fue de 1,49 ± 1 y 3,41 ± 0,86 respectivamente. Se demostró una correlación positiva entre el Kt/V y la depuración de creatinina residual (p < 0,05). El PET al inicio y fin del estudio para D/Pcreatinina hora 4 fue 0,78 ± 0,01 y 0,74 ± 0,13 respectivamente (p = n.s.), y para el D4/D0 glucosa los valores fueron 0,35 ± 0,11 y 0,34 ± 0,08 (p = n.s.). La ingesta diaria proteica fue de 3,32 ± 1,05 y el catabolismo proteico 1,32 ± 0,47 gr/kg/día, con un Balance Nitrogenado de + 2,0 gr/kg/día, y un PNAn de 0,94 ± 0,33. El Kt/V residual y total se correlacionaron significativamente con el PNAn, y se encontró una correlación significativa pero negativa entre ingesta proteica y bicarbonato plasmático (p < 0,05). Conclusión: Las variables estudiadas muestran un balance proteico positivo y un Kt/V superior a las recomendaciones para adultos, sugiriendo que mayor dosis de diálisis se asocia a mejores indicadores nutricionales. La correlación negativa entre bicarbonato en plasma e ingesta proteica sugiere una relación entre el aporte proteico y acidosis, lo cual requiere una cuidadosa supervisión. Behaviour of dialysis and nutritional parameters in paediatric peritoneal
Perfil clínico-epidemiológico de las infecciones por virus respiratorios en adultos hospitalizados durante la estación de influenza 2004
Rabagliati B,Ricardo; Serri V,Michel; Perret P,Cecilia; Guzmán D,Ana M; Azócar A,Teresa; Habash A,Leila; Espinoza L,Claudia; Ferrés G,Marcela;
Revista chilena de infectología , 2006, DOI: 10.4067/S0716-10182006000200002
Abstract: during yearly influenza (flu) season, flu viruses are well represented among hospitalized patients as in the community. also, other respiratory viruses could be represented among adult in-patients. aim: to describe the presence and clinical- epidemiological characteristics of non-flu respiratory virus infections (respiratory syncytial-rsv, parainfluenza and adenovirus-adv) among hospitalized adults during flu season and to compare with flu-a (ia) or -b (ib) cases. patients and methods: adult patients hospitalized at hospital clínico universidad católica between may to july 2004 with a respiratory virus infections confirmed by rapid antigen test or direct immunofluorescence of ia, ib (flu group) or rsv, parainfluenza (1-2-3) and adv (non-flu group) were included. results: 86 cases were identified: 73.5% flu (48.2% ia, 25.3% ib) and 26.5% non-flu (15.7% parainfluenza-2; 8.4% rsv; 1.2% parainfluenza-3; 1.2% adv). no differences were observed in general characteristics and evolution of patients. in flu-group were more frequently observed myalgia, cough, hospitalization due to febrile syndrome, higher values of c-reactive protein and band leukocytes count (p < 0.05). conclusions: during 2004 flu season a 26.5 % of respiratory viral infection were due to non-flu viruses among adult hospitalized in our centre. the difficulty to difference flu vs. non-flu infections, suggest that it is necessary to include other respiratory virus in the viral etiological diagnosis, even in flu season
Medición de 17-OH progesterona sanguínea en recién nacidos chilenos: Antecedentes para implementar un programa de detección neonata de hiperplasia suprarrenal congénita
Cattani O,Andreina; Reyes G,María Loreto; Azócar P,Marta; Soto M,Julia; Romeo O,Eliana; Valdivia V,Ligia; Poggi M,Helena; Foradori C,Arnaldo;
Revista médica de Chile , 2000, DOI: 10.4067/S0034-98872000001000006
Abstract: background: the early diagnosis and therapy of congenital adrenal hyperplasia (cah) due to 21-hydroxylase deficiency can prevent adrenal crises and erroneous gender assignment in affected newborns. to achieve this goal neonatal mass-screening programs have been developed, measuring blood 17 alpha-hydroxyprogesterone (17ohp). in chile there is no experience with this type of screening. aim: to develop a method for measuring 17ohp in filter paper blood specimens. to obtain reference ranges and determine neonatal 17ohp threshold levels according to gestational age and birth weight. to analyze factors affecting the cost-efficiency ratio and suggest recommendations for the organization of a neonatal screening program for cah in chile. material and methods: nine hundred twenty two newborns were studied. 17ohp was measured using double antibody radioimmunoassay in filter paper blood samples obtained 48 h after birth. reference ranges were determined according to gestational age and birth weight and a cutoff point of 25 ng/ml was established. results: seventeen newborns had 17ohp over the cutoff value. they were assessed by a pediatric endocrinologist and in none of them, cah was confirmed. therefore the false positive rate of the determination was 1.8%. among these newborns with elevated 17ohp, 66% had a birth weight below 1.5 kg and 5.8%, a birth weight between 1.5 and 2.5 kg. the cost per reported result was us $ l. timing of the recall was between the 3 and 10 days of life. no newborn missed the follow-up. discussion: to increase the cost-efficiency ratio of an eventual neonatal screening program, newborns with birth weights below 1.5 kg should be excluded and cutoff points should be defined according to birth weight (rev méd chile 2000; 128: 1113-18)
Hipovitaminosis D en pacientes pediátricos en terapia de sustitución renal
Delucchi,Angela; Alarcón,Claudia; Cano,Francisco; Lillo,Ana María; Guerrero,José Luis; Azócar,Marta; Abarzúa,Carolina; Mu?oz,María José; I?iguez,Germán;
Revista médica de Chile , 2011, DOI: 10.4067/S0034-98872011000300008
Abstract: background: hypovitaminosis d has a high prevalence among patients with chronic kidney disease (ckd). aim: to determine the prevalence of 25 hydroxy vitamin d (25(oh) d) insufficiency and deficiency in pediatric patients on dialysis and kidney transplantation. material and methods: serum calcium and phosphorus, parathormone (pth), alkaline phosphatases and 25 (oh)d were measured in 13 children on hemodialysis (hd), 18 on peritoneal dialysis (pd) and 53 that received an allograft (tx), aged 9.8 ± 4.6 years (51% females). results: fifty four percent of patients had height z score less than -1.88. patients on hd had the lowest values. the average time of replacement therapy was 2.9 ± 2.8 years. mean 25(oh)d levels in all was 18.7 ± 10.7ng/ml (hd: 21 ± 16.8, pd: 18.9 ± 8.5, tx: 18.1 ± 9.72 ng/ml). eighty eight percent of patients had levels below 30 ng/ml. mean of serum calcium was 9.5 ± 0.64 mg/dl, serum phosphorus 5.03 ± 1.02 mg/dl, calcium-phosphorus product 48 ± 11.8 mg/dl and alkaline phosphatases 300.5 ± 171.3 iu/l. average pth values in dialyzed and tx patients were 724.6 ± 640.5 and 107.7 ± 56.2 pg/ml, respectively (p < 0.001). a positive correlation between 25 (oh) d and calcium levels among pd patients was observed (r = 0.490, p = 0.04). conclusions: hypovitaminosis d is highly prevalent among children on renal substitution therapy, regardless of the type of therapy used and the stage of renal failure.
Comportamiento de parámetros dialíticos y nutricionales en peritoneo diálisis pediátrica
Cano Sch,Francisco; Marín B.,Verónica; Azócar P.,Marta; Delucchi B.,María A.; Rodríguez S.,Eugenio; Díaz B,Erick; Villegas C.,Rodrigo; Ratner G.,Rinat;
Revista chilena de pediatría , 2003, DOI: 10.4067/S0370-41062003000400006
Abstract: behaviour of dialysis and nutritional parameters in paediatric peritoneal dialysis (pd) the management of children on pd requires constant monitoring of the dose of dialysis and nutritional support in order to maximise growth and development in the uraemic child. the measurement of a series of dialytic and nutritional variables allow the adjustment of treatment to the childs needs. objectives: 1) to measure the different variables in child undergoing pd, 2) calculate the dialysis dose (kt/v), the protein catabolic rate (pcr), the urea equivalent of nitrogen appearence (pna), the nitrogen balance, the peritoneal equilibrium test (pet) and, 3) to determine the correlation between them. patients and methods: a prospective study of 15 children undergoing chronic pd, with 59 serial measurements in a 6 month period. monthly measurements of weight/height, body surface area, urine volume, dialysis volume in 24 hrs, and the values of creatine, protein, albumin and urea in plasma, urine and dialysate, and in plasma the acid-base and electrolytes. a diet containing proteins according to rda was given. kt/v urea peritoneal and residual, pcr, pna and nitrogen balance were measured monthly, pet every 6 months. results: the mean kt/v residual and total was 1.49 ± 1 and 3.41 ± 0.86 respectively. a positive correlation between kt/v and residual creatine clearence was found (p < 0.05). there were no significant differences between the pet for creatinin (4th hour) or glucose d4/d0 at the beginning and end of the study, 0.78 ± 0.01 and 0.74 ± 0.13 for creatinine and 0.35 ± 0.11 and 0.34 ± 0.08 respectively. dietary protein intake was 3.32 ± 1.05, protein catabolism 1.32 ± 0.47 gm/kg/day, with a nitrogen balance of 2 gm/kg/day and a pnan of 0.94 ± 0.33. total and residual kt/v was correlated with the pnan, and a negative correlation between protein intake and plama bicarbonate was found. conclusions: the variables studied show a positive protein balance and a kt/v greater than the recom
Riesgo perioperatorio del bypass gástrico reseccional en pacientes con obesidad mórbida: Estudio prospectivo de 684 pacientes Perioperative risk among morbid obese patients subjected to gastric bypass
Attila Csendes J,Patricio Burdiles P,Ana María Burgos L,Juan Carlos Díaz J
Revista médica de Chile , 2006,
Abstract: Background: Bariatric surgery is a complex procedure not exempt of complications. Aim: To assess mortality and complications of excisional gastric bypass among morbidly obese subjects. Material and methods: Prospective analysis of 684 morbid obese patients (age range 14-70 years, 525 females) subjected to an excisional gastric bypass. Major postoperative complications and mortality were registered. Results: Mean body mass index (BMI) of the subjects was 43.7 kg/m2. One hundred sixty two patients had a BMI between 35 and 39.9 kg/m2, 419 had a BMI between 40 and 49.9 kg/m2 and 103 had a BMI over 50 kg/m2. Two patients with a BMI of 52 and 56 kg/m2 respectively, died in the postoperative period (0.3%). Thirty six patients had major complications. Anastomotic fistula was the most common complication in 12 patients (1.7%). Fourteen patients required a new operation due to complications. None of these died. The mean operative volume of the surgical team was 124 patients per year. Conclusions: Excisional gastric bypass has a low rate of mortality and complications, if the surgical team operates a large volume of patients
"LOS RODEOS DE LA PRACTICA": REPRESENTACIONES SOBRE EL SABER DOCENTE EN EL DISCURSO DE ESTUDIANTES DE PEDAGOGíA
Bobadilla Goldschmidt,Marcela; Cárdenas Pérez,Ana V; Dobbs Díaz,Emily; Soto Bustamante,Ana María;
Estudios pedagógicos (Valdivia) , 2009, DOI: 10.4067/S0718-07052009000100014
Abstract: the initial teacher training should contribute to the construction of a specific knowledge that differentiates the professional of teaching. that makes important to show what is the knowledge that gives being teacher a sense, both as a representation and as a professional knowledge. the next article introduces to the preliminary findings from an interpretative study about teaching knowledge representations in the pedagogy students' discourse. from their voice, this work describes their constructions of sense about this knowledge and their components. from these findings it is discussed the need of rethinking the initial teacher training from the school.
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