What does a "Delta Wave" on ECG signify?

A Delta Wave on an ECG is indicative of Wolff-Parkinson-White (WPW) syndrome, which is characterized by the presence of an accessory conduction pathway. This phenomenon occurs when there is an extra electrical pathway in the heart that can cause episodes of rapid heart rate (tachycardia). The Delta Wave manifests as a slurred upstroke in the QRS complex, reflecting the early depolarization of the ventricles due to this accessory pathway.

In the context of WPW syndrome, the Delta Wave signifies that the impulse is bypassing the normal conduction system, leading to a characteristic alteration in the ECG reading. This can help clinicians recognize WPW syndrome during their assessments and guide appropriate management strategies for patients with this condition.

Understanding the significance of the Delta Wave is crucial for cardiac sonographers and other healthcare professionals, as it directly relates to how the heart's conduction pathways affect patient care and potential intervention needs.