Final answer:
An EKG with narrow complex tachycardia, short PR interval, and delta wave is indicative of Wolff-Parkinson-White (WPW) syndrome. This condition is characterized by an accessory pathway that leads to early ventricular depolarization. Each type of arrhythmia has unique ECG attributes which are important for accurate diagnosis.
Step-by-step explanation:
An electrocardiogram (ECG or EKG) with a narrow complex tachycardia, a short PR interval, and a delta wave is characteristic of Wolff-Parkinson-White (WPW) syndrome. This is a type of pre-excitation syndrome where an accessory pathway (the bundle of Kent) bypasses the normal conduction system causing early depolarization of the ventricles. The hallmark findings are the delta wave, which is the initial slurring of the QRS complex, and the shortened PR interval, reflecting the rapid conduction from the atria to the ventricles.
In contrast, atrial fibrillation would show an irregularly irregular rhythm with no discernible P waves, while supraventricular tachycardia (SVT) typically presents with a narrow complex tachycardia but without a delta wave or necessarily a short PR interval. Ventricular tachycardia has a wide QRS complex, which helps distinguish it from the other conditions.
The various blocks and patterns described in the provided information such as second-degree block, atrial fibrillation, ventricular tachycardia, and third-degree block, each have distinctive ECG characteristics that are different from WPW syndrome. Understanding these patterns is crucial for the correct diagnosis and management of cardiac arrhythmias.