Apologies for being MIA for a month now. Been busy! But am back and in this episode talk about calcium channel blocker toxicity. The physiology behind it, a little pharmacology and then the treatment. Busting some myths and reinforcing the need for proactive emergency medicine evidence based treatment. You can check out these papers and do more research for yourselves too -
1. Wightman RSHRA. Cardiologic Principles II: Hemodynamics. In: Nelson LS, Howland MA, Lewin NA, et al, editors. Goldfrank’s toxicologic emergencies. 11th Edition. New York City, NY: McGraw Hill; 2019. p. 260–7
2. Levine M, Brent. Beta-Receptor Antagonists. In: Brent J, Burkhart K, Daragan P, et al, editors. Critical care toxicology. New York City, NY: Mosby; 2017. p. 771–86.
Wallukat G. The beta-adrenergic receptors. Herz 2002;27(7):683–90.
4. Ranniger C, Roche C. Are one or two dangerous? Calcium channel blocker exposure in toddlers. J Emerg Med 2007;33(2):145–54
5. Gummin DD, Mowry JB, Beuhler MC, et al. 2019 Annual Report of the American Association of Poison Control Centers’ National Poison Data System (NPDS): 37th Annual Report. Clin Toxicol 2020;58(12):1360–541.
6. Holger JS, Engebretsen KM, Obetz CL, et al. A comparison of vasopressin and glucagon in beta-blocker induced toxicity. Clin Toxicol 2006;44(1):45–51
7. Jang DH, Donovan S, Nelson LS, et al. Efficacy of methylene blue in an experimental model of calcium channel blocker-induced shock. Ann Emerg
8. Laes JR, Williams DM, Cole JB. Improvement in hemodynamics after methylene blue administration in drug-induced vasodilatory shock: a case report. J Med Toxicol 2015;11(4):460–3.
9. Wang GS, Levitan R, Wiegand TJ, et al. Extracorporeal membrane oxygenation (ECMO) for severe toxicological exposures: review of the toxicology
investigators consortium (ToxIC). J Med Toxicol 2016;12(1):95–9
10. Hayes BD, Gosselin S, Calello DP, et al. Systematic review of clinical adverse events reported after acute intravenous lipid emulsion administration. Clin
Toxicol 2016;54(5):365–404
11. American College of Medical Toxicology. ACMT position statement: guidance for the use of intravenous lipid emulsion. J Med Toxicol 2017;13(1):124–5.
12. Kerns W 2nd. Management of beta-adrenergic blocker and calcium channel antagonist toxicity. Emerg Med Clin North Am. 2007 May;25(2):309-31; abstract viii. doi: 10.1016/j.emc.2007.02.001. PMID: 17482022.
13. Cole JB, Arens AM. Cardiotoxic Medication Poisoning. Emerg Med Clin North Am. 2022 May;40(2):395-416. doi: 10.1016/j.emc.2022.01.014. Epub 2022 Apr 5. PMID: 35461630.