Cholesterol embolism after colonoscopy: a case report.
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Carlo Massara
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The verapamil versus amlodipine in nondiabetic nephropathies treated with trandolapril (VVANNTT) study.
BACKGROUND: We tested whether the combination of verapamil (V) or amlodipine (A) with trandolapril (T) affected proteinuria differently from T alone in patients with nondiabetic nephropathies. METHODS: After T, 2 mg, in open conditions for 1 month, 69 patients were randomly assigned to be administered T, 2 mg, combined with V, 180 mg, plus a placebo or T, 2 mg, plus A, 5 mg, once a day in a double-blind fashion. Patients were followed up for 8 months. RESULTS: Proteinuria diminished significantly after T treatment from mean protein excretion of 3,078 +/- 244 (SEM) to 2,537 +/- 204 mg/24 h (P = 0.018). In the randomized phase, there was a slight reduction in proteinuria in both groups without significant differences within and between treatments (T + V, protein from 2,335 +/- 233 to 2,124 +/- 247 mg/24 h; T + A, protein from 2,715 +/- 325 to 2,671 +/- 469 mg/24 h). The selectivity index (SI; calculated as the ratio of immunoglobulin G to albumin clearance) was slightly and not significantly reduced in patients treated with T plus V from a median of 0.20 (interquartile range, 0.13) to 0.16 (interquartile range, 0.15; P = not significant), whereas it significantly increased from 0.20 (interquartile range, 0.14) to 0.30 (interquartile range, 0.14; P = 0.0001) in patients treated with T plus A. Modifications in SI and serum creatinine levels at the end of the study from randomization were significantly directly correlated (r = 0.45; P = 0.001). The number of patients reporting adverse effects was significantly higher in the T plus A than T plus V group (63.8% versus 33.3%; P = 0.016). CONCLUSION: In patients with nondiabetic proteinuric nephropathies treated with T, the combination of V or A does not significantly increase its antiproteinuric effect.
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