[The calcium concentration of the blood in arterial hypertension patients].

Determination of the concentration of ionized calcium in the blood of metallurgists and miners with arterial hypertension (AN) revealed a tendency to reduction of calcemia that was more pronounced in high arterial pressure and low consumption of calcium with food. A tendency to reduce calcemia by stimulating PTH secretion has a pathophysiological significance in the development of AH. A calcium-enriched diet may be of value in the prophylaxis of AH.