Role of intravenous lipid emulsions in the management of calcium channel blocker and β-blocker overdose: 3 years experience of a university hospital

Abstract

Objectives: The objective of this study was to assess the efficacy of lipid emulsion as antidotal therapy in severe calcium channel blocker (CCB) and β-blocker (BB) intoxications. Patients and methods: This is a retrospective study in which we have summarized data of patients who were admitted to a university-based emergency department in a period of 3 years and were given intravenous lipid emulsion (ILE) to manage cardiogenic shock due to CCB and BB overdose. Results: We identified 15 patients who received ILE therapy for CCB and BB toxicity. Hospitalization durations variated between 3 and 33 days (mean 7.46 ± 7.41 days). Drug exposures included CCBs (n = 8, 53.3%), CCBs and paracetamol (n = 1, 6.6%), and BBs (n = 6, 40%). ILE therapy was effective in 12 patients (80%). Three patients (20%) had resistant hypotension, one of whom progressed to pulmonary edema. Adverse effects of ILE therapy were seen in three patients (20%). Two patients underwent mechanical ventilation. Two patients developed hypoxic ischemic encephalopathy, one patient died, and 14 patients (93.3%) were discharged from hospital. Conclusion: There was 93.3% survival in patients receiving ILE for drug-induced cardiovascular collapse. Clinically significant adverse effects were uncommon. We suggest ILE administration for the treatment of cardiogenic shock due to CCB and BB overdose.

Keywords:

• Intravenous lipid therapy
• calcium channel blocker overdose
• β-blocker overdose
• emergency, poisoning

Declaration of interest

The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents, received or pending, or royalties.