Endocarditis electrocardiogram

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-in-Chief: Cafer Zorkun, M.D., Ph.D. [2] Maliha Shakil, M.D. [3]

Overview

On EKG, endocarditis may be characterized by conduction abnormalities, low QRS voltage, ST elevation, heart block, ventricular tachycardia, and supraventricular tachycardia.[1]

Electrocardiogram

EKG may be useful in the detection of the 10% of patients who develop a conduction delay during infective endocarditis by documenting an increased PR interval. On EKG, endocarditis may be characterized by:[1]

This is an electrocardiogram from a man in his 80's. The patient has severe lung disease, has mitral regurgitation secondary to bacterial endocarditis , and is taking digoxin, Lasix and potassium. The electrocardiogram shows sinus rhythm and a QRS with a left axis deviation, a QRS duration of 118 milliseconds and a tall R wave in the first precordial lead V1 with an R wave height of approximately 21 mm. The prolonged QRS duration and the S waves that are seen as lead 1 and lead 6 suggest a right on the branch block and the a left axis deviation suggests a left anterior hemi-block . Finally the tall R wave in V1 lead suggests right ventricular hypertrophy.

References

  1. 1.0 1.1 Electrocardiographic findings in infective endocarditis. Science Direct. URL=http://www.sciencedirect.com/science/article/pii/0736467988901539 Accessed on September 25, 2015

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