Literature Review: can the ECG risk stratify for short-term adverse events in severe hyperkalemia?

HPI:  A 60-year-old male is brought to the ED for lightheadedness and near-syncope. The following ECG is obtained:

Case ECG

Before watching this week's video, ask yourself these questions:

1. What ECG abnormalities do you notice?
2. What is the underlying rhythm?
3. How would you treat this patient?