What is the most disturbance?

A 28-year-old man presents with a 2 hours’ history of rapid palpitations. He feels a little light headed but is other exam: pulse=170 bpm and regular, BP=100/68 mmHg. He has had 2 similar episodes in the past.

What is the most disturbance?
A . SVT
B . VF
C . A-fibrillation
D . VT
E . Ventricular-ectopic

Answer: A

Explanation:

Palpitation, light headedness with a tachycardia of 170 bpm that is regular are most likely a SVT.