Measurement of the concentration of hydrogen ions in the mucous membranes of the upper respiratory tract. Mittermaier and Marchionini (Zeitschrift f. Hals-NasenOhren-Heilkunde, 1928. B. 20)

Mittermaier and Marchionini (Zeitschrift f. Hals-NasenOhren-Heilkunde, 1928. B. 20) investigated the state of the mucous membranes and secretions in acute inflammation of the paranasal sinuses, and found a displacement of Pu towards the acidic reaction; so, with acute inflammation of the frontal sinus, Rn 6.63; with severe acute and purulent sinusitis Pn — 6.4. With the transition of an acute process into a chronic one, the pH also shifts towards alkalinity; so. polypoidly degenerated mucosa in chronic sinusitis gave Pn = 7.9; These studies have, in addition to the theoretical and practical result, the widely practiced washing of the inflamed sinuses with various solutions receive certain indications, namely: in acute inflammations, the lavages should be performed with weakly alkaline solutions, and for chronic inflammations, with weakly acidic solutions.