Endocarditis electrocardiogram

Endocarditis Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Infective Endocarditis from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications & Prognosis
Diagnosis
Diagnostic Study of Choice
History and Symptoms
Physical Examination
Laboratory Findings
Electrocardiogram
X-ray
Echocardiography and Ultrasound
CT scan
MRI
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Primary Prevention
Secondary Prevention
2014 AHA/ACC Guideline for the Management of Patients With Valvular Heart Disease
Diagnosis and Follow-up
Medical Therapy
Intervention
Case Studies
Case #1
Endocarditis electrocardiogram On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Endocarditis electrocardiogram
CDC onEndocarditis electrocardiogram
Endocarditis electrocardiogram in the news
Blogs on Endocarditis electrocardiogram
to Hospitals Treating Endocarditis electrocardiogram
Risk calculators and risk factors for Endocarditis electrocardiogram

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-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.

Electrocardiogram

An ECG may be helpful in the diagnosis of endocarditis. Findings on an ECG diagnostic of endocarditis include:

• Increased PR interval

• Conduction abnormalities
• Atrioventricular dissociation
• Low QRS voltage, ST elevation
• Heart block which includes with first-degree heart block and complete heart block
• Ventricular tachycardia
• Supraventricular tachycardia

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 a left axis deviation suggests a left anterior semi-block. Finally the tall R wave in V1 lead suggests right ventricular hypertrophy.