Metoprolol tartrate for acute management of supraventricular tachycardia

Metoprolol tartrate can be considered for the acute management of paroxysmal supraventricular tachycardia if vagal manoeuvres and adenosine do not restore sinus rhythmBrugada 2020.

Do not give metoprolol tartrate to a patient with a wide-complex tachycardia unless it is known to be of supraventricular origin. A QRS complex wider than 0.12 seconds may represent supraventricular tachycardia with a rate-related or pre-existing bundle branch block; however, always consider ventricular tachycardia. If the QRS complex is wider than 0.14 seconds, ventricular tachycardia is more likely than paroxysmal supraventricular tachycardia.

A suitable regimen of metoprolol tartrate to restore sinus rhythm in patients with paroxysmal supraventricular tachycardia is:

Metoprolol tartrate is generally safe; however, it can depress cardiac contractility and worsen asthma symptoms.