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Implantable Cardioverter Defibrillator Alert in Dextrocardia with Transposition of the Great Arteries

HeartRhythm

A 50-year-old woman with dextrocardia and D-transposition of the great arteries presented with a “RV defib lead impedance” remote-monitoring alert from her implantable cardioverter defibrillator (ICD). In 2012, she had a ventricular fibrillation cardiac arrest. An epicardial pacemaker was implanted.

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What is strange about this paroxysmal atrial fibrillation in an otherwise healthy patient? And what happened after giving ibutilide?

Dr. Smith's ECG Blog

We examined the effect of ibutilide, a class III antiarrhythmic agent, on the energy requirement for atrial defibrillation and assessed the value of this agent in facilitating cardioversion in patients with atrial fibrillation that is resistant to conventional transthoracic cardioversion.

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PO-02-167 FACTORS IMPACTING SHOCK IMPEDANCE IN SUBCUTANEOUS IMPLANTABLE-CARDIOVERTER DEFIBRILLATORS IN PATIENTS WITH HYPERTROPHIC CARDIOMYOPATHY

HeartRhythm

Since approval in late 2012, the subcutaneous implantable cardioverter-defibrillator (SICD) has been used as an alternative to the traditional transvenous ICD (TV-ICD) for SCD prevention in HCM. Elevated shock impedance has been associated with failed defibrillation.

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MP-470545-006 TEN-YEAR EXPERIENCE OF THE SUBCUTANEOUS IMPLANTABLE CARDIOVERTER-DEFIBRILLATOR IN PATIENTS WITH HYPERTROPHIC CARDIOMYOPATHY

HeartRhythm

Since approval in late 2012, the subcutaneous implantable cardioverter-defibrillator (SICD) has been used as an alternative to the traditional transvenous ICD (TV-ICD) for SCD prevention in HCM. Hypertrophic cardiomyopathy (HCM) is associated with risk of sudden cardiac death (SCD).

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Seizure in a 30 something

Dr. Smith's ECG Blog

This episode self terminated before defibrillation was possible. mEq/L for Mg++ ) — given that ECF levels of these cations comprise only ~1-2% of total body stores ( Jahnen-Dechent and Ketteler — Clin Kidney J 5(Suppl 1):i3-i14, 2012 — and — Udensi and Tchounwou — Int J Clin Exp Physiol 4(3): 111-122, 2017 ). mEq/L for K+ and 1.76

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Cardiac resynchronization therapy (CRT) – why is it so important?

Cardiomatics

Both the Comparison of Medical Therapy, Pacing and Defibrillation in Heart Failure (COMPANION) and the Cardiac Resynchronisation—Heart Failure (CARE-HF) trials [3,4], which were the cornerstone of electrotherapy in HF patients, showed up to a 36% reduction in mortality, an effect size rarely seen in trials today [5]. 2012, 14, 628–634. [5]

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A Middle-Aged male with Chest Pain and an Unusual ECG

Dr. Smith's ECG Blog

Cardioversion/defibrillation. Electrocardiol 45:433-442, 2012 ). A partial list includes the following: Certain drugs ( antiarrhythmics; calcium channel blockers; ß-blockers; antianginals; psychotropic medications; alcohol; cocaine; other drugs ). Acute febrile illness. Variations in autonomic tone. Hypothermia. Ischemia/infarction.