ECG
Labs
CBC
Chem 10
Consider coags, especially if on anticoagulation
Consider LFTs
Consider BNP if heart failure unclear
Consider thyroid function tests
Troponin if patient has chest pain
Chest XR
Consider Cardiac Echo - if signs of new/worsening heart failure
CBC
Chem 10
Consider coags, especially if on anticoagulation
Consider LFTs
Consider BNP if heart failure unclear
Consider thyroid function tests
Troponin if patient has chest pain
Based on ECG
Atrial fibrillation with RVR
Regular
Polymorphic ventricular tachycardia
AV Node Independent
Atrial flutter
Sinus tachycardia
Ventricular tachycardia
Atrial tachycardia 