A 25-year-old female presented to ER unconscious. Her mother tells you about her having recurrent syncopal episodes. Her BP is 80/60 mm Hg and you order an ECG. Treatment is

HR = 300/1.5=200 B.P.M Narrow QRS (80/100 m sec) PSVT or AVN ST depression, hidden P waves. Since question says BP decreased so Cardioversion /DC shock Given (If question stated patient conscious: Adenosine should be given) Option C: Used to prevent arrythmia (recurrence of tachy arrythmia). It's not an emergency treatment Option D: Used in WPW syndrome Multifocal Atrial Tachycardia: Narrow QRS (MAT): RR variable P wave variable, Morphology changes are seen M.A.T: Variable p wave altitude Electrical Alterans: Variable QRS complex T.D.P: variable BROAD QRS complex