Final answer:
The 7 Diagnostic Pacing Maneuvers are used during an electrophysiological study to diagnose AVNRT and involve testing the conduction system of the heart, including the SA node, AV node, and internodal pathways. These maneuvers can provoke or terminate AVNRT and differentiate among various types of heart blocks and arrhythmias.
Step-by-step explanation:
The 7 Diagnostic Pacing Maneuvers used to diagnose Atrioventricular Nodal Reentrant Tachycardia (AVNRT) are specifically designed to assess the functional and structural properties of the atrial and ventricular conduction system, which includes the Sinoatrial (SA) node, the Atrioventricular (AV) node, and internodal pathways (anterior, middle, posterior). These maneuvers are employed during an electrophysiological study to provoke or terminate the AVNRT and to understand the involvement of dual AV nodal pathways in AVNRT initiation.
While the specific 7 maneuvers are not described in the provided reference material, such maneuvers typically include various forms of pacing and extrastimulus delivery, like atrial extrastimulus testing, ventricular pacing, and programmed stimulation of the heart at different rates and intervals. This helps to define the specific nature of the AV nodal conduction and arrhythmia mechanism, as well as to identify other arrhythmias such as AV blocks or supraventricular tachycardias.
Understanding the electrophysiological characteristics of the cardiac conduction system (SA node, AV node, and internodal pathways) and how they relate to various types of heart block is crucial for correct diagnosis and management of arrhythmias.