ECG features of sinus arrhythmia. Sinus rhythm with beat-to-beat variation in the P-P interval producing an irregular ventricular rate.
Normal Sinus Rhythm. Pacemaking impulses arise from the SA node and are transmitted to the ventricles via the AV-node and His-Purkinje system.
Atrial flutter is a type of supraventricular tachycardia caused by a re-entry circuit within the right atrium.
An important rhythm distinction between ventricular (VT) or supraventricular (SVT with aberrancy) this will influence your patient management
EKG differential diagnosis. Differentials based on specific ECG findings. Book: ECGs for the Emergency Physician 1 and 2; LITFL ECG Library