Chronic Eosinophilic Leukemia Presenting as Cardiac Failure

Figure 1

ECG at presentation showing sinus tachycardia and a right axis deviation. P wave duration of 120 ms with deep terminal portion > 1 mm (left atrial component) in V1 indicative of a dilated left atrium. The dilated left atrium is a result of an increased volume load from the severe mitral regurgitation.