COR	LOE	Recommendations	References
I	B‐NR	1. In patients with wide complex tachycardia, a 12‐lead ECG during tachycardia should be obtained whenever possible.	S3.2.1.1–S3.2.1.15
I	B‐NR	2. In patients with suspected or documented VA, a 12‐lead ECG should be obtained in sinus rhythm to look for evidence of underlying heart disease.	S3.2.1.16