ECG Topics

8 pages

• Atrial AbnormalityRight Atrial Abnormality Causes Congenital Valvular Heart Disease Cor pulmonale Criteria P wave > 2.5mm in height (Lead II) Positive first part of P-wave in V1 > 1.5mm P-wave Axis: Rightward: P pulmonale Leftward: P congenitale Examples Example 1 Lorem ipsum dolor sit amet, consectetur adipiscing el
• Bidirectional Ventricular TachycardiaRare form of ventricular tachycardia. Characterized as alternating axis and morphology of VT Mechanism of bidirectional VT is believed to be the result of two different sites in the distal His Purkinje system or ventricle where delayed afterdepolarization (DAD) develops at different heart rate thres
• Bundle Branch BlocksRBBB + LBBB | LAFB + LPFB | Incomplete LBBB + Nonspecific IVCD | Related Topics | Further Reading Right Bundle Branch Block Criteria QRS > 120 ms in adults (>100 ms in children 4-16yo, and > 90 ms <4yo Leads V1 or V2: rsr’ , rsR’ , or rSR’ pattern The R or r
• ECG Interpretation Pre-ReadingIntroduction This page was created to help avoid common pitfalls for trainees when they are asked to interpret an ECG. Trainees are encouraged to read this page prior to coming to ECG rounds. Principles of ECG Interpretation If you are asked to interpret an ECG, novices often jump to a particular di
• ECG Lead Placement3D Visualization of Lead Placement 12 Lead ECG by 3D ECG Leads on Sketchfab Lead Orientation (Reciprocal Leads)
• Left Ventricular HypertrophyBackground | Causes | Diagnostic Criteria | Associated Findings | Examples | Further Reading Background The free wall typically grows the most, which directs more forces backwards, upwards, and left. (Leftward Axis) Causes Acquired (Aortic Valve Disease, Hypertension) Cardiomyopathies (Ischemic CMP
• Right Ventricular HypertrophyBackground | Causes | Diagnostic Criteria | Associated Findings | Examples | Further Reading Background Pathologic increase in right ventricular muscle mass Direction of forces changed to the right and anterior Manifests as larger R-wave and smaller S-wave in V1 and larger S-wave and smaller R-wave
• Sgarbossa CriteriaLeft Bundle Branch Blocks (LBBB) are uniquely challeging at interpreting for ischemic changes. ST changes are frequently seen in with LBBB that may or may not be related to ischemia. LBBB are always considered pathological but are not always associated with a myocardial infarction. Decisions regardi