87-year-old male complains of dyspnea on exertion worsening over last 6 months, PND, orthopnea, and lower limb edema improved with diuretics. ECHO showed preserved LVEF, diastolic function not adequately assessed. ECG is shown below.
•What is the next best step?
1- Continue diuretics
2- Start ACE inhibitors
3- Implant dual chamber pacemaker