Abstract
Abstract only Introduction and Importance: While the use of vaping has increased significantly among young individuals, the effects of the various vape aerosol chemical contents on cardiac electrophysiological dynamics remain unknown. Case Presentation: A 22-year-old female with a history of energy vaping but no significant past medical history presented with cardiac arrest. Found to have no pulse, CPR was started and initial rhythm of ventricular tachycardia was obtained. Shock was administered with follow-up rhythm of ventricular fibrillation. Patient was shocked again and entered atrial fibrillation with rapid ventricular response. She later cardioverted into sinus tachycardia and was intubated. Transthoracic echocardiogram showed normal ejection fraction but was otherwise unremarkable. Patient was extubated on day four of hospitalization. Left heart catheterization and cardiac MRI were completely unremarkable. Toxicology, urine analysis, and troponins were all negative. Patient was discharged with metoprolol tartrate, and a life-vest with outpatient follow-ups for possible implantable cardioverter-defibrillator placement in the setting of negative work up for sudden cardiac arrest. Clinical Discussion: Vaping-induced sudden cardiac arrest may be attributed to a reduction in cardiac repolarization reserve. Exposure to vegetable glycerin and propylene glycol, substances present in nearly all vape products, have been found to incite arrhythmias and disrupt cardiac conduction in animals. Acrolein,a byproduct of glycerin, has also been found to induce arrhythmias due to autonomic dysfunction. Increased prevalence of ventricular arrhythmias have also been noted with exposure to aerosols containing nicotine-free propylene glycol (PG).This likely stems from the impact of PG aerosols on the transient outward potassium current, which plays a significant role in early cardiac repolarization. Conclusion: The effects of inhaling vape aerosols remain not fully understood. While there is a perceived notion that nicotine-free aerosols may not be harmful, that remains unclear.Further studies should be conducted to evaluate for pro-arrhythmogenic effects and autonomic dysfunction from the various chemical substances present in vape aerosols.