title: Identification of antiarrhythmic drugs and their metabolites in urine.
abstract: Identification of the antiarrhythmic drugs ajmaline, aprindine, diltiazem, disopyramide, flecainide, gallopamil, lidocaine, lorcainide, mexiletine, phenytoin, prajmaline, propafenone, quinidine, sparteine, tocainide and verapamil and their metabolites in urine is described. After acid hydrolysis of the conjugates, extraction and acetylation, the urine samples were analysed by computerized gas chromatography-mass spectrometry. Using ion chromatography with the selective ions m/z 58, 72, 84, 86, 136, 224, 266, and 426, the possible presence of antiarrhythmic drugs and/or their metabolites was indicated. The identity of positive signals in the reconstructed ion chromatograms was confirmed by a visual or computerized comparison of the stored full mass spectra with the reference spectra. The ion chromatograms, reference mass spectra and gas chromatographic retention indices (OV-101) are documented. The method presented is integrated in a general screening procedure (general unknown analysis) for several groups of drugs.
authors.affiliation: Institut für Pharmakologie und Toxikologie, Universität des Saarlandes, Homburg/Saur, Federal Republic of Germany.
authors.forename: H H
authors.initials: HH
authors.lastname: Maurer
mesh_terms: D000107:Acetylation; D000818:Animals; D000889:Anti-Arrhythmia Agents / Q000652:urine*; D002849:Chromatography, Gas; D006801:Humans; D006868:Hydrolysis; D013058:Mass Spectrometry; D008657:Metabolic Clearance Rate; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D000889:Anti-Arrhythmia Agents