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- Dipyridamole potentiates the effect of adenosine and reduced dose of adenosine is recommended with it
- Amiodarone is antiarrhythmic medications with active metabolite desethylamiodarone
- Afib + DCC done, give Apixaban 5mg BD for 1 month
- Right bundle branch block results in widened splitting of S2
- Atrial fibrillation and significant renal insufficiency - treatment propafenone (has hepatic elimination)
- Atenolol can accumulate to toxic levels in renal failure and cause severe bradycardia, should be held in renal failure
- RBBB HR 60 bpm + dizziness. Dizziness can be due to intermittent advanced heart block. Thirty-day event monitor for correlating symptoms with ECG findings
- Blood test for noninvasive diagnosis of coronary artery disease is likely to be of most value if no previous CAD + has risk factors of CAD eg old man, hypertension, dyslipidemia, and a smoking
- Predictors of low prognostic coronary risk: very good functional capacity (having achieved stage IV of the Bruce protocol) and lack of cardiopulmonary symptoms or no ischemic changes on the ECG during or after exercise. During exercise MPHR = 220-age in years, normal SBP 160 and 200 mm Hg, DBP does not change significantly. During recovery hypotension is much less likely to have advanced CAD