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  • Title: [Systemic arterial hypertension in primary chronic glomerulonephritis: prevalence and its influence on the renal prognosis].
    Author: Quirós PL, Ceballos M, Remón C, Hernández Romero MC, Benavides B, Pérez Pérez-Ruilópez MA, Lozano A, Aznar E, Rivero M, Fernández Ruiz E.
    Journal: Nefrologia; 2005; 25(3):250-7. PubMed ID: 16053006.
    Abstract:
    UNLABELLED: Nowadays, glomerulonephritis is one of the most common causes of End-stage Renal Disease and starting point of dialysis in Spain. Several factors may influence negatively in this prognosis; among them, we may show up the systemic arterial hypertension. Though its prevalence in the glomerulonephritis is considered higher than in other nephropathies, with variations among series, probably due to difference in ages, in geographical areas, in histological types, in time on evolution of the nephritis ... and because it is difficult to distinguish if the hypertension is a consequence of the nephritis or a consequence of the renal failure that can be present in several cases. In the same way, its negative influence in the renal prognosis may be influenced more by this renal failure, which can be its cause when it is quite severe, than by the hypertension itself. Our aims were to analyse, on the one hand the prevalence of hypertension in the 394 patients diagnosed of primary glomerulonephritis by means of a renal biopsy during two decades in the Bay of Cadiz, as well as its influence in the renal prognosis since the moment of the diagnosis, even with the absence of severe renal failure. We gathered demographic, clinical, analytical and histological data, as well as the situation of the renal function and the survival period of it at the end of each patient study. For the analysis prognosis and renal survival, Kaplan-Meier curves and the long-rank test were used. Of the 394 patients, 247 are men and 147 are women, with an average age of 36.7 +/- 17.7 years old. The global prevalence of hypertension was 39%, with a higher frequency in older patients. The gathered rate of renal survival for hypertensive patients was 54%, 28%, 20% and 4% at 5, 10, 15 and 20 years respectively; while for non-hypertensive patients, it was 83%, 75%, 66% and 62% for the same periods of time (p < 0.001). This worse tendency for hypertensive patients is observed too in each particular histological type, especially in the IgA nephropathy and membranous nephropathy. These results were the same for the patients who did not have severe renal failure in the moment of the biopsy. CONCLUSIONS: Hypertension is a common fact in the primary glomerulonephritis, which also conditions, in an important way, the renal prognosis itself in a long term, from the moment of diagnosis and even before the existence of a significant renal failure.
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