Identify this cardiac rhythm:

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BlackTom AI · Accepted Answer

Question: Identify this cardiac rhythm from the provided ECG image.

Option 1: Ventricular Tachycardia. This rhythm typically presents as a regular, wide-complex tachycardia at a high rate (often 100–250 bpm) with monomorphic QRS complexes. The waveform in the image shows a uniform, rapid sequence of broad QRS complexes, which is characteristic of VT. This makes VT the most plausible diagnosis for a wide, regular tachycardia.

Option 2: Atrial Flutter. Atrial flutter is characterized by a sawtooth (flutter) pattern of atrial activity, usually with a regular ventricular response if 2:1 conduction, but the depiction here lacks the classic sawtooth atrial waves and shows continuous rapid QRS complexes instead of distinct atrial flutter baselines.

Option 3: Atrial Fibrillation. Atrial fibrillation presents with an irregularly irregular rhythm and absent discrete P waves, with varying interval between QRS complexes. The image does not display irregular intervals nor irregularly varying QRS timing; instead, it shows a steady, rapid sequence, arguing against AFib.

Option 4: Ventricular Fibrillation. Ventricular fibrillation is chaotic, with extremely irregular, rapid, and uncoordinated waveforms and no identifiable QRS complexes. The image demonstrates a coherent series of wide, repeating QRS complexes, not the disorganized activity seen in VFib.

Summary: Among the options, the combination of a regular, rapid, wide-complex rhythm most closely aligns with Ventricular Tachycardia, while the other possibilities would present with distinctive patterns (sawtooth flutter waves, irregular rhythm, or chaotic fibrillatory activity) that are not evident in this tracing.

Identify this cardiac rhythm:

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