Exam: Multifocal Atrial Tachycardia Clinical Features ECG Diagnosis and Management
30:00
2
A patient with pneumonia and hypoxia develops an irregular tachycardia. Discrete P waves with different morphologies are visible on ECG. Which ECG feature most reliably distinguishes this rhythm from atrial fibrillation?
A
Irregular RR intervals
B
Heart rate above 120/min
C
Presence of an isoelectric baseline between P waves
D
Narrow QRS complexes

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