Selected Large-Animal Models of Ventricular Arrhythmias

Area of Science:

• Cardiology
• Translational Medicine
• Animal Research

Background:

• Ventricular arrhythmias pose significant mortality risks, driving research into their mechanisms and treatments.
• Large-animal models are vital for studying cardiac electrophysiology due to anatomical and physiological similarities to humans.
• Ethical and regulatory constraints are impacting the use of traditional models like dogs.

Purpose of the Study:

• To review research utilizing large-animal models for ventricular arrhythmias.
• To highlight the importance of these models in understanding disease mechanisms.
• To emphasize their role in preclinical evaluation of novel therapies and devices.

Main Methods:

• Review of selected investigations using large-animal models for ventricular arrhythmias.
• Focus on materials and methods employed in cited literature.
• Comparison of different species (dogs, cats, pigs, sheep, goats) in arrhythmia research.

Main Results:

• Swine models are particularly promising due to heart similarity and reliable arrhythmia induction, especially during ischemia.
• Dogs have been historically important but face increasing usage limitations.
• Sheep and goats offer valuable contributions, though used less frequently.

Conclusions:

• Large-animal models, especially swine, are indispensable for advancing ventricular arrhythmia research.
• These models facilitate the study of pathophysiology and preclinical testing of interventions.
• Careful selection and reporting of methods in animal models are crucial for translational success.