1. Holiday Heart Block: Alcohol-induced PR Prolongation
Jelena R. Ghadri, MD, Christian Templin, MD, PhD, Firat Duru, MD, Thomas F. Lüscher, MD, Laurent M. Haegeli, MD 
The American Journal of Medicine 
Volume 126, Issue 9, Pages (September 2013)
DOI: /j.amjmed
Copyright © 2013 Elsevier Inc. Terms and Conditions

2. Figure 1
The electrocardiogram (ECG) demonstrated sinus rhythm with a prolonged PR interval of 338 ms, indicating first-degree atrioventricular block. The 27-year-old patient, otherwise healthy, had alcohol poisoning.
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2013 Elsevier Inc. Terms and Conditions

3. Figure 2
Another ECG, obtained 3 hours after the first, demonstrated complete recovery of the atrioventricular conduction with a normal PR interval of 166 ms.
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2013 Elsevier Inc. Terms and Conditions