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  • Title: Long-term renal survival in malignant hypertension.
    Author: González R, Morales E, Segura J, Ruilope LM, Praga M.
    Journal: Nephrol Dial Transplant; 2010 Oct; 25(10):3266-72. PubMed ID: 20299339.
    Abstract:
    BACKGROUND: Some studies have shown an improvement in the prognosis of patients with essential malignant hypertension (MHT), but data about long-term outcome and prognostic factors of these patients are scarce. METHODS: We performed a single-centre retrospective analysis of 197 patients with MHT, diagnosed in the period 1974-2007. RESULTS: Incidence of MHT remained stable along the different periods of the study. Renal damage at presentation was common (63% of patients) but renal function improved or remained stable after diagnosis in a majority of patients. The probability of renal survival was 84 and 72% after 5 and 10 years, respectively. Diagnosis during the first period (1974-85) of the study, previous chronic renal impairment, baseline renal function and proteinuria, presence of microhaematuria, systolic and diastolic blood pressure and proteinuria during follow-up were associated with an unfavourable outcome. By multivariate analysis, mean proteinuria during follow-up remained as the only significant risk factor (OR, 2.72; 95% CI, 1.59-4.64). Renal survival for patients with mean proteinuria <0.5 g/24 h was 100 and 95% after 5 and 10 years, respectively. The number of patients who improved or stabilized their renal function significantly increased in the second and third periods of the study (1987-2007). CONCLUSIONS: Renal survival in MHT has improved in recent years. Mean proteinuria during follow-up is a fundamental prognostic factor for renal survival.
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