Sudden Cardiac Death

Begin with a 12-lead ECG and transthoracic echocardiogram (TTE) when evaluating a patient with suspected ventricular arrhythmia, syncope concerning for arrhythmia, a family history suggestive of inherited sudden death risk, or known structural heart disease. TTE is a Class I investigation to assess cardiac structure and function in sudden cardiac death risk assessment, and LVEF has greater established clinical utility than many noninvasive electrophysiologic indices. WileyWileyJCS/JHRS 2022 Guideline on Diagnosis and Risk Assessment of ...

Use phenotype-directed testing after the initial ECG and TTE. Holter monitoring, exercise ECG, signal-averaged ECG, T-wave alternans, cardiac MRI, and invasive electrophysiology study are among the tests used for sudden cardiac death risk assessment; the choice should be driven by the suspected substrate, frequency of symptoms, and need to document ventricular arrhythmia or inducibility. Wiley+1WileyJCS/JHRS 2022 Guideline on Diagnosis and Risk Assessment of ...pubs rsnaCongenital and Hereditary Causes of Sudden Cardiac Death in ...

Interpret a prolonged QTc on a standard 12-lead ECG as a clinically meaningful risk signal rather than a nonspecific incidental finding: QTc prolongation is an independent risk factor for sudden death from cardiac arrest. Review medications and acquired contributors while determining whether the ECG and clinical context suggest an inherited arrhythmia syndrome. WileyWiley2020 APHRS/HRS expert consensus statement on the investigation ...

In patients with known or suspected structural heart disease, use TTE to characterize ventricular function and anatomy, then use cardiac MRI when additional definition of myocardial substrate is needed. Cardiac MRI is used for sudden cardiac arrest prediction and risk stratification, while imaging-based identification of arrhythmic substrate is particularly relevant when LVEF alone does not capture risk. cell+1cellCardiac imaging for the prediction of sudden cardiac arrest in ...CDC[PDF] NIH Public Access - CDC Stacks

For suspected congenital or hereditary causes of sudden cardiac death, integrate history with 12-lead ECG, exercise ECG, and Holter monitoring before deciding whether advanced imaging or electrophysiologic evaluation is needed. Noninvasive evaluation of individuals at risk commonly includes resting, exercise, and ambulatory electrocardiography. pubs rsnapubs rsnaCongenital and Hereditary Causes of Sudden Cardiac Death in ...

Treat medication review as a diagnostic intervention when QRS widening, ventricular arrhythmia, or unexplained syncope occurs in a patient receiving sodium-channel-active drugs. Lamotrigine has class IB antiarrhythmic activity at therapeutic concentrations and may slow ventricular conduction, widen QRS, and induce proarrhythmia in patients with heart failure, valvular disease, congenital heart disease, conduction-system disease, ventricular arrhythmias, channelopathies including Brugada syndrome, clinically important ischemic disease, or multiple coronary disease risk factors. dailymed nlm nih+3dailymed nlm nih[PDF] lamotrigine tablet, film coated, extended release LAMICTAL XRdailymed nlm nih[PDF] LAMICTAL- lamotrigine tablet - DailyMeddailymed nlm nih[PDF] LAMOTRIGINE - DailyMeddailymed nlm nih[PDF] lamotrigine tablet, orally disintegrating - DailyMed

ICDs are supported by multiple clinical trials for prevention of sudden cardiac death in patients with heart failure, but implantation requires attention to competing risk, device complications, and the need for longitudinal heart failure care. Most ICDs are implanted in patients with heart failure with reduced LVEF, so ICD follow-up should be integrated with routine heart failure surveillance rather than managed as a device-only problem. ScienceDirect+1ScienceDirectAppropriate Evaluation and Treatment of Heart Failure Patients After Implantable Cardioverter-Defibrillator Discharge: Time to Go Beyond the Initial ShockESCThe dos and don’ts of the follow-up of patients with ICD in private cardiology practice and the impact of remote monitoring

After an ICD discharge, determine whether therapy was appropriate, assess for recurrent ventricular arrhythmia and device-related contributors, and evaluate for worsening heart failure. Approximately 20% to 35% of heart failure patients receiving a primary-prevention ICD experience an appropriate shock within 1 to 3 years, while about one-third experience an inappropriate shock. ScienceDirectScienceDirectAppropriate Evaluation and Treatment of Heart Failure Patients After Implantable Cardioverter-Defibrillator Discharge: Time to Go Beyond the Initial Shock

An ICD shock carries prognostic significance: it is associated with a two- to fivefold increase in mortality, most commonly from progressive heart failure, and reported median time from first shock to death is 168 to 294 days depending on heart failure etiology and appropriateness of ICD therapy. Intensify heart failure surveillance and identify reversible triggers rather than treating the shock as an isolated electrical event. ScienceDirectScienceDirectAppropriate Evaluation and Treatment of Heart Failure Patients After Implantable Cardioverter-Defibrillator Discharge: Time to Go Beyond the Initial Shock

Several noninvasive electrophysiologic measures—including ventricular late potentials, T-wave alternans, T-wave variability, QT/RR slope, heart-rate variability, heart-rate turbulence, and deceleration capacity—have been studied for sudden cardiac death risk assessment. Their availability does not make them equivalent to LVEF for clinical risk prediction; use them, if at all, as adjuncts within a phenotype-driven evaluation. WileyWileyJCS/JHRS 2022 Guideline on Diagnosis and Risk Assessment of ...

Cardiac imaging offers a complementary pathway when electrical testing is insufficient because structural abnormalities and myocardial scar may define the arrhythmic substrate. The practical question is not whether an additional marker is abnormal, but whether the finding changes the indication for disease-directed therapy, intensified surveillance, electrophysiologic evaluation, or ICD consideration. cell+1cellCardiac imaging for the prediction of sudden cardiac arrest in ...CDC[PDF] NIH Public Access - CDC Stacks