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17
QRS
Complex: Basics
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Wide
QRS
Complex: DDx
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Accelerated Idioventricular Rhythm (AIVR)
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Advanced (High-Grade) AV Block
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Asystole (Cardiac Arrest)
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Atrial Fibrillation with RVR
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Atrial Fibrillation with WPW (Pre-excited AF)
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Atrial Flutter
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Atrial Flutter with Variable Conduction
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Atrioventricular (AV) Block: Comprehensive Summary
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Barcelona Criteria in Left Bundle Branch Block (LBBB): OMI Pattern
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Bradycardia: DDx
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BRASH Syndrome
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Clumped or Grouped Beats: DDx
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Curriculum: Advanced Level
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Curriculum: Core Level
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Curriculum: Foundations Level
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Weekly Workouts
15
#464
Wide Complex Tachycardias: clues to VT mimics when the heart rate is too slow or the
QRS
complexes
are too wide
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#447
Differential Diagnoses: must know causes of right axis deviation and wide
QRS
complexes
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#419
STAT ECG Diagnoses: differential diagnoses for low voltage
QRS
complexes
and ventricular arrhythmias in patients with left ventricular assist devices (LVADs)
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Video Moments
2
#544
2025 ECG Competition Answers (Part 1/3)
▶ at 11:31
…ing on here. Now hopefully you realize there's two different types of
QRS
complexes
. There is these
QRS
complexes
which we'll call complex morphology number one and then there's morphology number two.…
2024 ECG Competition Answers (Part 2/2)
▶ at 13:09
[2024-06-10] and that's where these qs
complexes
are coming from this they're coming from this competing junctional pacer so that's the rhythm also out here that's a pvc now some people are thinking m…
#244
ECG Basics & Fundamentals: low voltage
QRS
complexes
and sinus tachycardia
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#240
ECG Basics & Fundamentals: criteria for low voltage
QRS
complexes
and poor R wave progression
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#209
ECG Basics & Fundamentals: the sensitive vs. specific definitions for low voltage
QRS
complexes
and differentials that cause them
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#176
Differential Diagnoses: causes of low voltage
QRS
complexes
aside from pericardial effusion
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#110
Differential Diagnoses: must know causes of wide
QRS
complexes
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#597
2026 ECG Competition Answers (Part 4)
…om traditional Sgarbossa. Barcelona criteria also use small
QRS
complexes
with discordant ST deviation The third Barcelona criterion is different from modified …
#595
2026 ECG Competition Answers (Part 2)
…roper ischemic context Dr. Mattu stresses that high-voltage
QRS
complexes
can distort repolarization and create abnormal-appearing T waves. In general, he cauti…
#594
2026 ECG Competition Answers (Part 1)
…ock, the escape rhythm should be regular. In this case, the
QRS
complexes
are irregular, and some ventricular beats occur earlier than expected. This suggests t…
#590
UMEM Cases, Part 4: When the Computer Misses the Rhythm and Flutter Fakes a STEMI
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#588
UMEM Cases, Part 2: When the ECG Conceals and When It Reveals
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#567
Recent ECG Case Highlights from the University of Maryland (Part II)
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#546
2025 ECG Competition Answers (Part 3/3)
…wer Bix rule: when you see an atrial beat ½ way between two
QRS
complexes
, suspect atrial flutter! 12. What is Ashman phenomenon? (2 points) Question # 12 Answe…
