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Related Concept Videos

Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Mechanism of Cardiac Arrhythmias01:28

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Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
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Mitral Valve Prolapse II: Assessment and Management01:22

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IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
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Dysrhythmias II: Classification of Tachyarrhythmias01:28

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Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
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Long-Term Risk Assessment in Athletes With Complex Ventricular Arrhythmias.

Paolo Compagnucci1, Michela Casella1,2, Maria Lucia Narducci3,4

  • 1Cardiology and Arrhythmology Clinic, Marche University Hospital, Ancona, Italy (P.C., M. Casella, G.S., F.G., A.D.R.).

Circulation. Arrhythmia and Electrophysiology
|May 28, 2025
PubMed
Summary
This summary is machine-generated.

Uncommon ventricular arrhythmia (VA) morphology in athletes is linked to higher risks of heart disease and adverse events. Comprehensive assessments, including invasive tests, improve prognostic evaluation for complex VAs.

Keywords:
athletesexercise testgadoliniumprognosisrisk assessment

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Area of Science:

  • Cardiology
  • Sports Medicine
  • Electrophysiology

Background:

  • Ventricular arrhythmias (VAs) pose a significant health concern for athletes.
  • Assessing the prognostic value of noninvasive and invasive methods in athletes with complex VAs is crucial.

Purpose of the Study:

  • To evaluate the prognostic significance of various diagnostic assessments in athletes experiencing complex ventricular arrhythmias.
  • To determine if integrating noninvasive and invasive findings improves risk stratification.

Main Methods:

  • A multicenter cohort study included 190 athletes with frequent or exercise-induced VAs.
  • Athletes were categorized by VA electrocardiogram (ECG) morphology (common vs. uncommon).
  • Diagnostic workup included cardiac magnetic resonance imaging and electrophysiology studies with electroanatomical mapping.

Main Results:

  • Athletes with uncommon VA morphology showed more abnormal findings and diagnoses of structural heart disease.
  • Over 6.2 years, 4% of athletes experienced primary outcome events (sudden death or sustained VAs); none occurred in the common morphology group.
  • Invasive electrophysiology study findings significantly improved outcome prediction when combined with noninvasive data.

Conclusions:

  • A comprehensive diagnostic approach integrating ECG, stress testing, imaging, and invasive electrophysiology can refine prognostic evaluation in athletes with complex VAs.
  • Risk stratification models incorporating VA morphology, imaging, and electrophysiology data can identify subgroups with varying event rates.