Narrow complex and regular rhythms
Results:
Narrow & Regular Tachycardia DDx
Key Points Narrow regular tachycardia = QRS <120 ms with a steady R–R interval. The big three DDx: sinus tachycardia, SVT (AVNRT/AVRT/junctional), and atrial flutter with fixed AV conduction (commonly…
Narrow Complex Tachycardia: the maximum achievable sinus heart rate
A 67-year-old woman is brought to the ED by EMS for palpitations. She is found to have a heart rate ~168. Vital signs are otherwise within normal limits aside from…
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