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Rev. nefrol. diál. traspl ; 33(2): 75-84, jun. 2013. tab, graf
Artigo em Espanhol | LILACS | ID: lil-716939

RESUMO

Introducción: La Nefropatía Mesangial Primaria(NMP) es un conjunto heterogéneo de patologías caracterizada por expansión de la matriz extracelular, depósitos mesangiales, frecuentemente de IgA o IgM, acompañados o no de hipercelularidad. Nuestros objetivos fueron establecer la prevalencia de NMP en el Hospital Militar Central, determinar características demográficas, epidemiológicas y evolución. Métodos: Estudio retrospectivo observacional. Se revisaron historias clínicas e informes de biopsias renales. Se obtuvieron datos de laboratorio, se registraron fechas de consultas, inicio de síntomas, remisión de la proteinuria y tratamiento realizado. Resultados: De 106 biopsias, 24 (20.2%) fueron NMP, 20 IgA y 4 IgM. Presentaron alteración aislada del sedimento urinario (52.2%), síndrome nefrótico(26.1 %) y síndrome nefrítico (21.7 %). Veintiún pacientes recibieron bloqueantes del sistema renina- angiotensina, 12 inmunosupresión. La proteinuria inicial fue 2.93 (±2.10) g/d, al año: 0.95 ±2.1 gr/d (p: 0.06), a los 2 años 0.55 ±0.7 gr/d (p: 0.03). Obtuvieron remisión completa (50%), completa-recaída (25%), parcial (20%), sin remisión(5%). Tiempo para la remisión 355.39 días (IC: 101-610). Pacientes con proteinuria menor a 1gr/d: remisión completa (29%), remisión-recaída (57%), parcial (14%). Con proteinuria mayor a 1gr/d: remisión completa (64%), remisión-recaída (9%), parcial (18%), sin remisión (9%). Tiempo de seguimiento 79.92 ± 87.9 meses. Ocho pacientes fueron seguidos 5 años, creatinina inicial 1.13± 0.4, final 1.58 ±1.1 mg/ dl (p=0.67). Proteinuria inicial 2.93±2.8 gr/d y final de 0.77±0.88 gr/d, (p=0.069). Un paciente requirió diálisis transitoria, otro diálisis crónica y falleció. Conclusiones: La NMP constituye la primera patología renal biopsiada. La proteinuria disminuyó significativamente. Los pacientes con proteinuria mayor a 1gr tuvieron mayor remisión y menor recaída, la creatinina mostró una tendencia ascendente no significativa.


Introduction: Primary Mesangial Nephropathy(PMN) is an heterogeneous set of pathologies characterized by the expansion of the extracellular matrix, mesangial deposits -frequently of IgA or IgM-, associated or not to hypercellularity. Our objectives were to establish the prevalence of PMN at the Hospital Militar Central, determine demographic and epidemiologic characteristics, and evolution. Methods: Observational retrospective study. Medical records and kidney biopsy reports have been reviewed. Laboratory data were obtained, consultation dates were recorded, as well as onset of symptoms, remission of proteinuria, and therapy. Results: Out of 106 biopsies, 24 (20.2%) were PMN, 20 IgA, and 4 IgM. They presented isolated abnormalities of the urine sediment (52.2%), nephrotic syndrome (26.1 %), and nephritic syndrome (21.7%). Twenty-one patients received renin-angiotensin system receptor blockers, 12 received immunosuppression. Baseline proteinuria was 2.93 (±2.10) gr/d, one year later: 0.95 ±2.1 gr/d (p: 0.06), two years later: 0.55 ±0.7 gr/d (p: 0.03). They had full remission (50%), full relapse (25%), partial remission (20%), and no remission (5%). Time until remission: 355.39 days (CI: 101-610). Patients with proteinuria lower than 1gr/d: full remission (29%), remission-relapse (57%), partial remission(14%). With proteinuria higher than 1gr/d: full remission (64%), remission-relapse (9%), partial remission (18%), no remission (9%). Follow-up time: 79.92 ± 87.9 months. Eight patients were followed up for 5 years, baseline creatinine 1.13± 0.4, final 1.58 ±1.1 mg/dL (p=0.67). Baseline urinary protein of 2.93±2.8 gr/d, and final value of 0.77±0.88 gr/d, (p=0.069). One patient required transient dialysis, another one required chronic dialysis and died. Conclusions: PMN is the first biopsied renal pathology. Urinary protein decreased considerably. Patients with urinary protein over 1gr had higher remission and lower relapse; creatinine showed an upward tendency that was not significant.


Assuntos
Humanos , Células Mesangiais , Glomerulonefrite por IGA , Imunoglobulina M , Nefropatias
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