EKG Challenge #1 - Unresponsive and Bradycardic - Case Conclusion

We'd like to start by thanking everyone who participated in the EKG challenge.  Without further ado, the case conclusion:

You are working in TCC when EMS arrives, bagging an unresponsive elderly-appearing female.   They report that they were called to a nursing home for unresponsiveness, and found the patient on the floor.  On their arrival, she was minimally responsive to noxious stimuli and had a heart rate of 36 on the monitor.  She received atropine 0.5 mg x 3 prehospital with minimal response.   Her blood pressure is 80/60.  To identify if there is heart block, you get an EKG demonstrating marked sinus bradycardia with a 1^st degree AV block and possible ST elevation in the inferior and precordial leads (see below):