[Precipitation of piritramide and cefazolin : Study of the dependence on concentration and pH.]
CONCLUSION: The results imply a concentration dependence of the precipitation with cefazolin, while a correlation with pH changes could not be detected. In cases of co-administration of cephalosporins and piritramide, a piritramide concentration of 1 mg/ml seems to be safe and does not form a precipitate. As the precipitate could be reversed by diluting in saline solution it is most likely that a proton switch between the carboxylic acid moiety of cefazolin and the amino group of piritramide causes the precipitation.
PMID: 24220788 [PubMed - as supplied by publisher]
Source: Der Anaesthesist - Category: Anesthesiology Authors: Eckle VS, Grasshoff C Tags: Anaesthesist Source Type: research