Zur Problematik der Bestimmung des Sauerstoffpartialdruckes mit dem Mikroanalysenverfahren bei Herz- und Lungenkranken

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Abstract
By simultaneous measurement of the PO2 in capillary blood from the hyperemic ear lobe and blood from the brachial artery it was shown that the variation between the 2 in 23 patients with cardiac insufficiency was within the limits of +10% to -20%, while in 25 miners with varying degrees of silicosis it amounted to [plus or minus]10%. In cases of a simultaneously occurring cardiac insufficiency the PO2 in the capillary blood was definitely less than in arterial blood. Experimental investigations demonstrated a widening of the difference between capillary and arterial PO2 depending on the extent of the peripheral stasis.

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