Question:medium
Identify the image with the diagnosis.
Identify the image with the diagnosis.
Show Hint
Abrupt-onset regular narrow-complex tachycardia from above the ventricles.
Updated On: Jun 23, 2026
- VT
- PSVT
- AT
- Ventricular fibrillation
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: A sudden-onset, regular, narrow-QRS tachycardia coming from above the ventricles is paroxysmal supraventricular tachycardia.
Step 2: A re-entry loop, frequently due to dual AV-nodal pathways or an accessory bypass tract present from birth, keeps electrical signals circling and the ventricles race at a fast steady rate. The paroxysmal label reflects its abrupt start and stop.
Step 3: The other choices have different signatures: VT shows broad QRS complexes from a ventricular focus, VF is an irregular pulseless squiggle, and atrial tachycardia is a focal atrial discharge. The narrow, regular, paroxysmal trace is PSVT.
\[\boxed{\text{PSVT}}\]
Step 2: A re-entry loop, frequently due to dual AV-nodal pathways or an accessory bypass tract present from birth, keeps electrical signals circling and the ventricles race at a fast steady rate. The paroxysmal label reflects its abrupt start and stop.
Step 3: The other choices have different signatures: VT shows broad QRS complexes from a ventricular focus, VF is an irregular pulseless squiggle, and atrial tachycardia is a focal atrial discharge. The narrow, regular, paroxysmal trace is PSVT.
\[\boxed{\text{PSVT}}\]
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