[Standardization in the study of water-containing spaces in patients with hypertension]

The study of hypertensive and normotensive patients has shown that as body weight increases the size of water-containing spaces decreases due to an improportional increase of the body surface area. The rise of total water content occurs mostly due to intracellular fluid. Patients with different sodium chloride consumption are characterized by different redistribution of extracellular fluid. Patients with low basal plasma renin activity, unlike those with normal renin activity, are characterized by different fluid distribution in watercontaining spaces and no interrelation between plasma renin activity and extracellular volumes.