Bundle‐Branch Block with Short P‐R Interval in Healthy Young People Prone to Paroxysmal Tachycardia

Bundle-branch block curves have been observed as a temporary sign during infections, congestive failure, coronary thrombosis, tachycardias, and various toxic states, and in most if not in all of the reported cases the abnormal curves occurred in patients with definite structural heart disease, or with extreme tachycardsia.