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- Nonparoxysmal junctional tachycardia is highly suggestive of digitalis toxicity
- Viability of noncontracting myocardium can be accurately evaluated by thallium-201 imaging
- y descent is blunted in cardiac tamponade
- AR, a diastolic murmur loudest at right sternal border, suggesting aortic root dilation - aortic root dimension should be measured on echo
- Sensitivity of TTE for detection of vegetations is less than 70%
- Digoxin can control ventricular rate at rest in patients with AFib, but not with exercise
- Presence of opening snap shows mobile body of anterior mitral leaflet in mitral stenosis
- Late diastolic (presystolic) accentuation of diastolic murmurs is absent in atrial fibrillation
- With long-QT syndrome, torsades de pointes is related to early afterdepolarization
- At CHA2DS2-VASc score of 5, annual stroke risk is 7%