ecg pattern recognition - mcgovern medical school · ecg pattern recognition siddharth prakash, md,...
TRANSCRIPT
![Page 1: ECG Pattern Recognition - McGovern Medical School · ECG Pattern Recognition Siddharth Prakash, MD, PhD Associate Professor Cardiology and Medical Genetics. Recommended ECG Book +ECGpedia](https://reader034.vdocuments.us/reader034/viewer/2022052009/601efbf039476537ff058144/html5/thumbnails/1.jpg)
ECG Pattern Recognition
Siddharth Prakash, MD, PhDAssociate Professor
Cardiology and Medical Genetics
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Recommended ECG Book
+ECGpedia
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ECG Interpretation: Steps
• Identify common ECG pattern• Underlying electrophysiologic disturbance
• Pathophysiology • Differential diagnosis
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Group 1
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Group 1
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Group 1
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Group 1
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Group 1
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ECG Interpretation: Steps
• Identify common ECG pattern• Underlying electrophysiologic disturbance
• Pathophysiology • Differential diagnosis
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Group 1: STEMIs
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Early Repolarization: Normal Variant
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Group 2
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Group 2
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Group 2
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Group 2
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Group 2
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Group 2: Ischemic ST changes
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Group 3
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Group 3
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Group 3
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Group 3
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Group 3
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Group 3: AV Blocks
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Rhythm Strip:?
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Rhythm Strip: 2nd degree Type 1 AV Block
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Rhythm Strip: ?
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Rhythm Strip: 2nd degree AV block, type 1 or 2
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Rhythm Strip: ?
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Rhythm Strip: 2nd degree AV block, type 2
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Group 4
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Group 4
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Group 4
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Group 4
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Group 4
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Group 4: Ventricular hypertrophyQRS criteria for RVH:Right axis deviation (>90 degrees)An R/S ratio > 1 in lead V1 An R wave > 7 mm tall in Vl, (not the R' of RBBB)An rsR' complex in V 1 (R' > 10 mm)An S wave > 7 mm deep in leads V5 or V6
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Group 5
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Group 5
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Group 5
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Group 5
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Group 5
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Group 5
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Group 5
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Group 5: Bundle Branch Blocks
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Rhythm Strip:?
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Rhythm Strip: Premature Atrial Contractions
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Rhythm Strip:?
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Rhythm Strip: Premature Atrial Contractions with Aberrant
Conduction
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Effect of Blocks on Axis
RBBB:Axis unaffected (determined by LBB)
LPFB:Initial depolarization lateralQRS axis down and to the rightNegative in lateral leads
LAFB:Initial depolarization inferiorQRS axis up and to the leftNegative in inferior leads
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Group 6
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Calculating Heart Rate
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Group 6
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Group 6
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Group 6
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Group 6
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Group 6
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Group 6: Tachycardias
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Rhythm Strip:?
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Rhythm Strip: Ventricular fibrillation
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Rhythm Strip:?
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Rhythm Strip:Torsade de Pointes
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Long QT
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Delta Wave
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Group 7
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Group 7
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Group 7
U wave
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Group 7
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Group 7Osborn or J waveShort QT
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Group 7
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Group 7Long QT
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Group 7
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Group 7: Electrolyte Abnormalities
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Group 7: Electrolyte Abnormalities
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After intervention…