Deterioration Rate in Hypertensive IgA Nephropathy: Comparison of a Converting Enzyme Inhibitor and β-Blocking Agents

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Abstract
The effect of β-blocking agents and enalapril as antihypertensive drugs has been compared in 47 patients with IgA nephropathy. The deterioration rate was calculated from the regression line of 51Cr-EDTA clearance and expressed in ml/min/year. The annual loss in glomerular filtration rate (GFR) was greater in patients treated with different β-blocking agents (-4.9 ± 6.8 ml/min/year) compared to patients treated with Enalapril (1.7 ± 7.4 ml/min/ year), in spite of the fact that these patients had a lower initial GFR. Nine patients were initially treated with β-blocking agents (-9.5 ± 9.3 ml/min/year) and then with an angiotensin-converting enzyme inhibitor (5.5 ± 11.2 ml/min/year). Angiotensin-converting enzyme inhibitors should therefore be preferred in the treatment of hypertension in IgA nephropathy.

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