Three groups of patients: A with normal glomerular filtration rate, B with moderate and C with
advanced renal damage, were dehydrated and fasted for 30 hours. At regular intervals …

RENAL concentrating ability in response to an antidiuretic stimulus presumably is limited by
a maximum urine osmotic pressure or osmotic urine-plasma gradient or ratio. Hence, the …

The measurement of urinary specific gravity as an indication of renal concentrating and
diluting ability is valid only as it reflects urinary total solute concentration (osmolarity). In …

Functional evaluation of the separate kidneys by means of collection and analysis of urine
specimens from each kidney was performed in 13 patients with essential hypertension …

Evaluating the diluting and concentrating capacity of the kidney can be accomplished with
three basic laboratory tests, urine and plasma osmolalities, and circulating levels of …

METHODS Patients were selected from the wards and outpatient clinics of the Third and
Fourth (New York University) Divisions of Bellevue Hospital. Observations were made in …

RESULTS The results of FISHBERG's concentration test were summarized in Table II and III.
Rela-tions between urinary concentrating ability and urinary urea/nonurea ratio in each …

High blood pressure occurs in the majority of cases of chronic kidney disease, while renal
damage is common in the more advanced cases of essential hypertension. In a population …

Sixty patients with well-established essential hypertension form the basis of this report.
These patients were selected fromthe Hypertension and Nephritis Clinic of the New York …

Methods Patients. One hundred and six male patients with sustained hypertension and 48
normal male subjects were included in this study. All patients were un-treated or had …