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A fatal case of suspected anaphylaxis with cefoperazone and sulbactam: LC-MS analysis.

Abstract
Cefoperazone and sulbactam are prescribed in combination and used in the treatment of moderate to severe bacterial infections. Serious anaphylaxis is a rare side effect. This report describes a fatal case of suspected anaphylaxis after intravenous administration of a combination of the two drugs. Heart blood was analyzed for cefoperazone by protein precipitation with acetonitrile and by liquid-liquid precipitation for sulbactam after protein precipitation with aqueous acetonitrile, followed by tandem mass spectrometry in the product ion scan mode for identification and by liquid chromatography mass spectrometry in the selected ion monitoring mode for quantitation. Calibration curves for cefoperazone and sulbactam were linear over the range 0.07 to 1.93 and 0.046 to 0.914 microg/ml respectively. The decedent's blood concentrations of cefoperazone and sulbactam were 0.368 and 0.143 microg/ml respectively. As these concentrations were below concentrations reported after single dosing studies and below those considered to be minimally inhibitory, death was presumed to have been caused by hypersensitivity and not an overdose. In conclusion, this procedure is useful for detecting and quantitating cefoperazone and sulbactam in postmortem blood and may be useful in the evaluation of anaphylaxis.
AuthorsKenji Tsujikawa, Kenji Kuwayama, Hajime Miyaguchi, Tatsuyuki Kanamori, Yuko Iwata, Hiroyuki Inoue, Tohru Kishi
JournalJournal of forensic sciences (J Forensic Sci) Vol. 53 Issue 1 Pg. 226-31 (Jan 2008) ISSN: 0022-1198 [Print] United States
PMID18279263 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Anti-Bacterial Agents
  • Cefoperazone
  • Sulbactam
Topics
  • Adult
  • Anaphylaxis (chemically induced)
  • Anti-Bacterial Agents (adverse effects, blood)
  • Cefoperazone (adverse effects, blood)
  • Chromatography, Liquid
  • Forensic Toxicology
  • Humans
  • Infusions, Intravenous
  • Male
  • Mass Spectrometry
  • Sulbactam (adverse effects, blood)

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