Document Classification

Section Type: RESULTS

Text: NG-monomethyl-L-arginine (16 mumol/min), a specific inhibitor of endothelium-derived relaxing factor, reduced forearm blood flow by an equal amount (p = 0. 9, 95 % CI for difference -0. 7 to 0. 8) in control subjects (0. 98 + / - 0. 39 ml/min) and treated patients (1. 03 + / - 0. 8 ml/min) but caused a threefold greater decrease in flow (2. 9 + / - 0. 9 ml/min) in untreated patients (p = 0. 0003, 95 % CI for difference between untreated patients and control subjects 1. 1 to 2. 7).