What’s the Diagnosis #16

A nursing home patient is brought by ambulance with a cough. Nursing home staff believe the patient may have aspirated lunch 30 minutes ago. The patient’s workup is normal except for his EKG which is shown below (you can click on it for a much larger/printable version). What’s the diagnosis? What needs to be done with the patient? Does it make any difference whether this was a new finding or an old finding? I’ll provide the answer in the comments section in a couple of days.
Source: WhiteCoat's Call Room - Category: Emergency Medicine Doctors Authors: Tags: What's the Diagnosis? Source Type: blogs