What is the characteristic feature of Delta Wave in cardiology?

The characteristic feature of the Delta Wave in cardiology is a slurred upstroke in the QRS complex. This wave is commonly associated with Wolff-Parkinson-White (WPW) syndrome, a condition resulting from an accessory pathway that can lead to pre-excitation of the ventricles.

The slurring occurs due to the early depolarization of the ventricles, which results from the conduction through the accessory pathway. This early activation is reflected in the QRS complex, where the initial part is gradually upsloping, causing the characteristic slurred appearance. The presence of a Delta Wave typically indicates that the patient may have an abnormal connection between the atria and ventricles, which can predispose them to certain types of tachycardia.

Other options, while related to various cardiac conditions, do not correctly identify the distinct feature associated with the Delta Wave. For instance, a short PR interval is not solely indicative of the Delta Wave, as it can be seen in other conditions as well. P wave inversion and prolonged QT interval address different aspects of cardiac conduction and rhythm disturbances.