Normal sinus rhythm with artifact

Normal sinus rhythm with artifact: 12-lead ECG showing sinus rhythm (best seen in lead V1) along with baseline artifact that resembles AF (most evident in leads II, III, and aVF). The best way to avoid misinterpretation of this AF mimic is to carefully review all leads of the 12-lead tracing, noting any leads with evidence of regular P waves, a consistent PR interval, and a one-to-one correspondence of P waves to QRS complexes (in this case, lead V1 along with the occasional concurrent P waves in lead II demonstrates sinus rhythm).