PT - JOURNAL ARTICLE AU - Simon Mifsud AU - Emma Louise Schembri AU - Matthew Mercieca Balbi AU - Mark Gruppetta AU - James Clark TI - Beer, hyponatraemia and cardiac conduction defects AID - 10.1136/bcr-2018-224260 DP - 2018 Mar 14 TA - BMJ Case Reports PG - bcr-2018-224260 VI - 2018 4099 - http://casereports.bmj.com/content/2018/bcr-2018-224260.short 4100 - http://casereports.bmj.com/content/2018/bcr-2018-224260.full AB - The authors report a case of a 68-year-old man who was diagnosed with an irreversible second-degree atrioventricular (AV) Mobitz II 2:1 block temporally associated with profound hyponatraemia. The cause of the hyponatraemia was beer potomania. The co-occurrence of reversible first, second and third-degree heart blocks and hyponatraemia has been described in a few published case reports. However, this case is noteworthy as the AV block persisted, despite correction of serum sodium concentration as opposed to other published cases, which meant that the patient required a permanent pacemaker.