Sustained ventricular tachycardia in structural heart disease

Hadid, Claudio

doi:10.5603/cj.a2014.0069

Cited by 9 publications

(5 citation statements)

References 94 publications

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“…Coronary artery disease, with a history of myocardial infarction, is the most common underlying heart disease associated with the development of sustained monomorphic ventricular tachycardia (SMVT) and ventricular fibrillation (VF) [3]. Like in our patient, the most common underlying mechanism is the generation of a reentry circuit within the scar tissue formed at the site of prior myocardial infarction [4].…”

Section: Discussionmentioning

confidence: 57%

Sustained Ventricular Tachycardia Presenting As Gastrointestinal (GI) Symptoms

Orabueze,

Ogunleye,

Jha

2024

Cureus

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Ventricular arrhythmias (VAs) are among the most common cardiac rhythms seen among patients. Patients presenting with frequent, sustained ventricular tachycardia (VT) pose a dilemma for clinicians due to the constant risk of sudden cardiovascular compromise.Ventricular tachycardia, which is commonly seen in patients with defects in cardiac anatomy, has been associated with an increased risk of sudden death. A previous myocardial scar from a previous myocardial infarction remains the most common cause of sustained monomorphic VT (SMVT) in patients with structural cardiac disease.Studies have shown that implantable cardioverter-defibrillators (ICDs) can be used for primary prevention in patients with ischemic or nonischemic cardiomyopathy whose ejection fraction remains below 35% despite guideline-directed medical therapy. It can also be used for secondary prevention of sudden cardiac death in patients who have had a VT or ventricular fibrillation (VF). Identifying individuals at risk for developing deleterious VTs who will benefit from ICD placement for prevention has been the objective of many large studies in recent years. We present a case of clinical importance involving the use of ICD in the primary prevention of mortality from sustained ventricular arrhythmias.

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Section: Discussionmentioning

confidence: 57%

Sustained Ventricular Tachycardia Presenting As Gastrointestinal (GI) Symptoms

Orabueze,

Ogunleye,

Jha

2024

Cureus

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“…This prevalence may increase in the population of patients with structural heart diseases (5). However, such a combination of symptoms does not suffice to make a diagnosis: a previous His bundle branch block or a block resulting from an intraventricular conduction aberrancy during tachycardia will result in similar ECG morphology during regular arrhythmia generated above the His bundle.…”

Section: Discussionmentioning

confidence: 99%

Use of aVR and Jastrzębski algorithms in the classification of wide complex tachycardia in dogs – a preliminary study

Michałek¹,

Frydrychowski

Adamowicz

et al. 2018

Journal of Veterinary Research

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IntroductionVentricular rhythm disturbances are a common pathology in human and veterinary medicine. In humans, the algorithmic approach is used to differentiate wide QRS complex tachycardia. The most commonly used are the aVR and Brugada algorithms as well as the ventricular tachycardia (VT) score developed by Jastrzębski and coworkers. In veterinary medicine, no such algorithms are available and the only parameter used to describe VT abnormalities is the duration of the QRS complexes. The aim of this analysis was determining whether human medicine algorithms for VT are applicable in veterinary medicine to differentiate wide QRS complex tachycardia in dogs.Material and MethodsA retrospective analysis was performed on 11 dogs of both sexes and various breeds and age diagnosed with VT. The diagnosis was based on ambulatory ECG, further established based on the reaction to lidocaine or adenosine or an invasive electrophysiological study.ResultsOf the 11 tracings passed through the aVR algorithm, 10 met the VT criteria. The most common criterion was the Vi/Vt ratio (8 out of 11 tracings). Based on the VT score, seven out of eight dogs had a high probability of VT.ConclusionRetrospective analysis of ECGs by aVR and VT score indicates that the applied algorithms may be useful in differentiating wide QRS complex tachycardia as a quick, easy, and non-invasive alternative to cardiac electrophysiology.

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“…63 However, SCD seldom occurs during nighttime in the general population, 64 unlike the situation in patients with OSA. Gami and coworkers demonstrated a peak of SCD during sleeping hours for OSA patients.…”

Section: Ventricular Tachycardiamentioning

confidence: 99%