303. CCC: Management of Ventricular Tachycardia and Electrical Storm in the CICU with Dr. Janice Chyou

Published: May 29, 2023, 4:02 p.m.

CardioNerds Co-Founder, Dr. Amit Goyal, along with Series Co-Chairs, Dr. Yoav Karpenshif and Dr. Eunice Dugan, and episode Lead, Dr. Sean Dikdan, had the opportunity to expand their knowledge on the topic of ventricular tachycardia and electrical storm from esteemed faculty expert, Dr. Janice Chyou. Audio editing by\xa0CardioNerds Academy Intern,\xa0Dr. Maryam Barkhordarian.\n\n\n\nElectrical storm (ES) is a life-threatening arrhythmia syndrome. It is characterized by frequently occurring bouts of unstable cardiac arrythmias. It typically occurs in patients with susceptible substrate, either myocardial scar or a genetic predisposition. The adrenergic input of the sympathetic nervous system can perpetuate arrythmia. In the acute setting, identifying reversible triggers, such as ischemia, electrolyte imbalances, and heart failure, is important. Treatment is complex and varies based on previous treatments received and the presence of intra-cardiac devices. Many options are available to treat ES, including medications, intubation and sedation, procedures and surgeries targeting the autonomic nervous system, and catheter ablation to modulate the myocardial substrate. A multidisciplinary team of cardiologists, intensivists, electrophysiologists, surgeons, and more are necessary to manage this complex disease.\n\n\n\nThe CardioNerds Cardiac Critical Care Series is a multi-institutional collaboration made possible by contributions of stellar fellow leads and expert faculty from several programs, led by series co-chairs,\xa0Dr. Mark Belkin,\xa0Dr. Eunice Dugan,\xa0Dr. Karan Desai, and\xa0Dr. Yoav Karpenshif.\n\n\n\n\n\nPearls \u2022 Notes \u2022 References \u2022 Production Team\n\n\n\n\n\n\n\nCardioNerds Cardiac Critical Care PageCardioNerds Episode PageCardioNerds AcademyCardionerds Healy Honor Roll\n\n\n\n\n\nCardioNerds Journal ClubSubscribe to The Heartbeat Newsletter!Check out CardioNerds SWAG!Become a CardioNerds Patron!\n\n\n\n\n\n\n\n\n\nPearls and Quotes - Management of Ventricular Tachycardia and Electrical Storm \n\n\n\n\nElectrical storm is defined as 3 or more episodes of VF, sustained VT, or appropriate ICD shocks within 24 hours. It occurs more commonly in ischemic compared to non-ischemic cardiomyopathy, and it is associated with a poor prognosis and high cardiovascular mortality.\n\n\n\nThe classic triad of electrical storm is a trigger, a myocardial susceptible substrate, and autonomic input perpetuating the storm.\n\n\n\nTriggers for electrical storm include ischemia, heart failure, electrolyte abnormalities, hypoxia, drug-related arrhythmogenicity, and thyrotoxicosis. A thorough evaluation of possible triggers is necessary for each patient, but it is uncommonly found. The evaluation may include laboratory studies, genetic testing, advanced imaging, or invasive testing.\n\n\n\nAcute treatment options involve acute resuscitation, pharmacotherapy with antiarrhythmics and beta-blockers, device interrogation and possible reprogramming, and sedation. Subacute treatment involves autonomic modulation and catheter ablation. Surgical treatments include sympathectomies and, ultimately, heart transplant.\n\n\n\nCatheter ablation is safe and effective for the treatment of electrical storm. In select patients, hemodynamic peri-procedural hemodynamic support should be considered.\n\n\n\n\nShow notes - Management of Ventricular Tachycardia and Electrical Storm \n\n\n\n\n\n\n\nSimple diagram of the classic \u201ctriad\u201d of ES (see reference 10).\n\n\n\n\n\n\n\nTreatment algorithm provided by the 2017 AHA/ACC/HRS guidelines (see reference 1).\n\n\n\n1. Define electrical storm.\n\n\n\nElectrical storm (ES), also called \u201carrhythmic storm\u201d or \u201cVT storm\u201d refers to a state of cardiac instability associated with 3 or more episodes of VF, sustained VT, or appropriate ICD shocks within 24 hours. Sustained VT refers to 30 seconds of VT or hemodynamically unstable VT requiring termination in < 30 seconds. Incessant VT refers to continued, sustained hemodynamically stable VT that lasts longer than one hour. VT is incessant or recurrent when it recurs promptly despi...