“…Attenuated responsiveness has been found in malignant and renovascular hypertension (Kaplan and Silah, 1964;Hocken et al, 1966;Nicotero et at. * 1966), in cardiac insufficiency, nephrotic syndrome, or hepatic cirrhosis (Johnston and Jose, 1963;Laragh, 1962;Laragh et al, 1964;Kaplan and Silah, 1964), during sodium depletion (Ames et al, 1965), in pregnancy (Chesley et ao., 1965), mi Addison's disease (Kfichel et al, 1964), and in Bartter's syndrome (Bartter et al, 1962;Beilin et a!., 1967).…”