PubMed · 7360164
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N H Holford. 1980-04-10. The quinidine-digoxin interaction.. https://doi.org/10.1056/nejm198004103021513
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Digoxin in salvia and blood serum of 24 patients obtained Bemecor was determined by the method of FPIA (IMx-ABBOT). Mixed saliva was collected by three different types of Salivette (Sarstedt) given in order: normal Salivette with cotton wool swab, Slivette with polyester wool and Salivette with citric acid as a stimulator. It was found, that the correletio between the digoxin concentrations in saliva and serum and saliva/serum rations depended on the type of Salivette. The highest correlation was obtained with the Salivette with polyester wool (r = 0.892), but low concentrations of this drug in serum were good reflected in all samples of saliva, independent on kind of Salivette.
Hyperkalemia resulting from digoxin toxicity is a well-recognized phenomenon. We report a case in which hyperkalemia, bradycardia, and hypotension were unresponsive to standard therapy but appeared to respond to digoxin-specific antibodies (Fab). This case highlights the importance of a high index of suspicion for digoxin toxicity as a potential cause of refractory hyperkalemia.
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