Problematic definitions of Mobitz type II second degree AV block: Historical aspects

Area of Science:

• Cardiology
• Electrophysiology

Background:

• The definition of Mobitz type II second-degree AV block has evolved.
• Historical perspectives are crucial for understanding current diagnostic criteria.

Purpose of the Study:

• To clarify the definition of Mobitz type II second-degree AV block.
• To review the historical development of its definition.

Main Methods:

• Historical review of key publications and contributions.
• Analysis of the evolution of diagnostic criteria for AV block.

Main Results:

• Mobitz's original description laid the foundation.
• The Chicago Arrhythmia School influenced diagnostic approaches.
• Excluding sinus rhythm slowing is increasingly important.

Conclusions:

• A comprehensive understanding of Mobitz type II second-degree AV block necessitates a review of its historical context.
• Accurate diagnosis requires differentiating from other bradyarrhythmias.