Overview

This is a small, pilot study with a primary goal of assessing patient perceptions of two medication treatments for supraventricular tachycardia in adult patients treated in the Emergency Department.

Eligibility

Inclusion Criteria:

1. Adult patients (18 years and older)
2. Diagnosis of acute, stable SVT in the emergency department

Exclusion Criteria:

1. Receipt of IV AV-nodal blocking agents prior to study enrollment (includes adenosine, non-dihydropyridine calcium channel blockers, beta-antagonists in pre-hospital and/or hospital setting).
2. Reported or confirmed personal history of Wolff-Parkinson-White (WPW) syndrome
3. History of heart failure with reduce ejection fraction (HFrEF) (LVEF</= 40%)
4. Severe bronchoconstrictive lung disease
5. Prior hypersensitivity to study medication
6. Previously enrolled in pilot study
7. Pregnant
8. Incarcerated