Source / episode info

• **Episode:**164
• **Title:**Divine Intervention Episode 164 – The Clutch Toxicology Podcast (Drugs of abuse, overdose, withdrawal, toxidromes).
• **Published:**2019-10-07
• Source:Episode page

One-liner

This episode provides a rapid-fire review of high-yield toxicological emergencies, covering toxidromes from cocaine and aspirin to acetaminophen overdose, warfarin reversal, methemoglobinemia, digoxin toxicity, malignant hypothermia, and drug-induced hypoglycemia.

High-yield summary

• Cocaine Toxicity: Causes profound hypertension (sympatomimetic toxidrome). Treat with _1 blockers (e.g., Phentolamine) or -agonists; avoid pure blockers due to risk of severe hypertension.
• Acetaminophen Overdose: Administer N-acetylcysteine (NAC) as the antidote, ideally within 8 hours. Activated charcoal is useful if given early.
• Warfarin Reversal: For life-threatening bleeding, administer a Four-Factor Prothrombin Complex Concentrate (4F PCC), not just Vitamin K or FFP. Oral Vitamin K is preferred for stable INR elevation.
• Methemoglobinemia: Caused by oxidizing agents (e.g., Dapsone, Trimethoprim/Sulfamethoxazole). Treat with Methylene Blue to reduce Fe^{3+} back to oxygen-carrying Fe^{2+}.
• Digoxin Toxicity: Risk is increased by hypokalemia (often caused by diuretics). Antidote is Digibind (anti-digoxin Fab fragments).
• Malignant Hypothermia (MH): Triggered by volatile anesthetics or succinylcholine. Treat with Dantrolene, a ryanodine receptor antagonist.

Learning objectives

• Recognize the clinical presentation of various toxidromes (e.g., sympathomimetic, opioid).
• Select appropriate antidotes for common overdoses (Acetaminophen, Warfarin, etc.).
• Understand the underlying mechanisms of drug toxicities (e.g., Fe^{3+} formation, \alpha-adrenergic stimulation).
• Manage life-threatening metabolic derangements (hypoglycemia, acidosis) in a toxicology setting.
• Differentiate between reversible and irreversible forms of organ damage due to toxins.