Clozapine-Induced Severe Toxicity: Exploring the Pharmacokinetic Profile of Clozapine and Its Significance in Hemodynamic Instability - A Case Report

Int Med Case Rep J. 2024 Feb 8:17:111-120. doi: 10.2147/IMCRJ.S444685. eCollection 2024.

Abstract

Hemodynamic instability in patients with clozapine intoxication can indirectly reflect the serum concentration of clozapine.We have described a case of a 32-year-old pregnant woman who developed life-threatening clozapine toxicity at 28 weeks of gestation. The levels of clozapine and norclozapine in the serum were high. We initiated hemoperfusion(HP) and other detoxification therapies to remove the drug. The patient had severely dilated peripheral blood vessels, which led to cardiac symptoms such as fatal hypotension and uncontrollable tachycardia, resulting in very high cardiac output and elevated Central venous oxygen saturation (ScvO2). Pharmacological intervention significantly improved the hemodynamics.In light of our observations in the ongoing case, we posit that evaluating hemodynamic parameters before and after blood detoxification could serve as a valuable means to gauge effectiveness and provide guidance for treatment.

Keywords: HP; PICCO; clozapine; hemoperfusion; pulse index continuous cardiac output; toxicity.

Publication types

  • Case Reports

Grants and funding

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. The authors received no funding to support this publication.