Final answer:
Narrow complex tachycardia with a short PR interval and a delta wave on an EKG is suggestive of Wolff-Parkinson-White syndrome, a cardiac arrhythmia caused by an abnormal electrical pathway in the heart.
Step-by-step explanation:
Narrow complex tachycardia with a short PR interval and a delta wave on an EKG is suggestive of a condition known as Wolff-Parkinson-White syndrome. This is a cardiac arrhythmia caused by an abnormal electrical pathway in the heart. In Wolff-Parkinson-White syndrome, there is an additional accessory pathway called the Bundle of Kent, which bypasses the normal electrical conduction system.
The delta wave seen on the EKG is the result of the ventricles being partially depolarized earlier than normal due to stimulation from the accessory pathway. This can lead to a rapid heart rate and an increased risk of arrhythmias.
Diagnosis and management of Wolff-Parkinson-White syndrome typically involve further cardiac evaluation, such as an electrophysiological study, to identify the specific pathway involved and determine the most appropriate treatment options.