Start high-quality CPR.
Results:
Pulseless Electrical Activity (Cardiac Arrest)
Key Points PEA is organized electrical activity on ECG with no palpable pulse. It is a non shockable arrest. Treat with CPR, epinephrine, and rapid search for a reversible cause. Confirm…
Asystole (Cardiac Arrest)
Key Points Asystole is a nonshockable cardiac arrest rhythm. Treat with high-quality CPR and epinephrine while searching for reversible causes. Always confirm asystole in two leads and rule out fine…
ECG Tags
- & Myocardial Ischemia
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- 1st degree AV Block
- 1st degree AVB
- 2:1 AV Block
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- 2025 ACC/AHA/ACEP/NAEMSP/SCAI Clinical Practice Guidelines for the Management of Patients with Acute Coronary Syndromes
- 2025 ACS guidelines
- 3rd degree AV block
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- 5-FU
- aberrancy
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- absent p waves
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- Adenosine
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- AI
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- bidirectional ventricular tachycardia
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- bifascicular block
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- Crochetage
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- ddx
- DDx for TWIs in V1-V3
- de Winter
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- ecg 101
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- Epsilon waves
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- extreme axis deviation
- Extreme Axis Deviation Basics
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- failure to capture
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- Fascicular blocks
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- fever
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- history of ecg
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- HOCM
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- Hyperkalemia Basics
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- Idiopathic monomorphic VT
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- Impressive syndrome
- in-training exam
- inappropriate sinus tachycardia
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- indeterminate axis
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- intervals
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- Ischemic T-waves
- Isoelectric baseline
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- Isolated Posterior STEMI
- Isorhythmic AV dissociation
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- ITE prep
- ITE review
- J point
- J Point Basics
- J wave
- J Wave Basics
- J-waves
- Jervell
- Jervell and Lange-Nielsen Syndrome
- JLNS
- Josephson Sign
- Josephson’s sign
- junctional escape
- junctional escape capture bigeminy
- junctional escape rhythms
- junctional rhythm
- Junctional rhythms
- Junctional Tachycardia
- Juvenile T wave inversions
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- kid
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- kids
- killer differentials
- LAD
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- LAE
- LAFB
- Lange
- Large T Wave DDx
- Large T-waves
- LBBB
- LBBB DDx
- lead misplacement
- lead V1
- left anterior fascicular block
- Left Atrial Enlargement
- Left axis deviation
- left axis deviation ddx
- left bundle branch block
- left posterior fascicular block
- Left Ventricular Hypertrophy (LVH)
- Left ventricular hypertrophy vs. STEMI
- lewis
- Lewis lead
- LGL
- life savers
- limb lead misplacement
- Limb lead reversal
- Literature review
- Long QT
- Long QT Interval DDx
- Long QT-interval
- Long QTc
- long ST segment
- Low Voltage
- low voltage differential
- Low voltage QRS
- Low Voltage QRS DDx
- LPFB
- LQT1 (KCNQ1 Mutation)
- LQT2 (KCNH2 Mutation)
- LQT3 (SCN5A Mutation)
- LQTS
- LV Aneurysm
- LV Aneurysm vs. STEMI
- LVAD
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- LVADs
- LVH
- LVH vs. STEMI
- LVH with strain pattern
- Lyme carditis
- Marijuana
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- Massive STEMI
- MAT
- Mechanisms of ACS
- Metabolic Emergencies
- meth
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- MI
- Microvascular Dysfunction
- mimics
- misplaced leads
- Mobitz
- Mobitz conduction
- Mobitz I
- Mobitz I (Wenckebach)
- Mobitz I or Mobitz II: How to tell the difference
- Mobitz II
- Mobitz II (Hay)
- Mobitz II AV block
- modified lead
- Modified Sgarbossa criteria
- Monomorphic Ventricular Tachycardia
- Monomorphic Ventricular Tachycardia (MMVT)
- monomorphic VT
- mth
- Multifocal atrial tachycardia
- Myocarditis
- Myxedema
- Na channel blocker toxicity
- narrow & irregular tachycardia
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- Narrow complex and regular rhythms
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- Narrow complex irregular tachycardia
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- narrow complex regular tachycardia differential
- Narrow Complex Tachycardia
- narrow qrs bradycardia
- Narrow QRS Bradycardia DDx
- New Q Waves
- New RBBB and LAFB
- Nielsen
- Nikelekam T-waves
- No clear P waves DDx
- no man's land
- Non-conducted P wave (P:QRS>1) DDx
- non-conducted P waves
- non-conducted PACs
- Non-STE ACS
- Non-sustained Ventricular tachycardia
- Non-sustained VT
- Non-Thrombotic Causes of Acute Coronary Syndrome (ACS)
- Nonspecific intraventricular conduction delay
- nonsustained
- nonsustained ventricular tachycardia
- Nonsustained VT
- normal
- Normal Cardiac Conduction
- Normal ECG
- normal heart rate
- Normal Heart Rate Ranges by Age
- normal lead placement
- normal qrs axis
- Normal R wave progression
- Normal Sinus Rhythm
- Normal STAT ECG
- Normal variant patterns
- normal variant ST elevation
- Normal variants
- Not Enough P Waves (P:QRS < 1) DDx
- Not normal ecg
- NSVT
- Occlusion MI
- Occlusion MI - STEMI Criteria & Beyond
- Occlusion MI patterns
- OMI
- OMI pa
- OMI Pattern
- OMI Pattern: ST Depression V1-V4
- OMI Patterns in Left Bundle Branch Block
- OMI Patterns in Ventricular Paced Rhythms
- OMI Patterns: STEMI (-) Occlusion MI
- Opiate Toxicity
- orthodromic
- orthodromic SVT
- Osborn (J) Wave
- Osborn waves
- overdose
- p mitrale
- p pulmonale
- p waves
- P.E.
- PAC
- PAC’s
- Paced rhythms
- Pacemaker
- Pacemaker emergencies
- pacemaker malfunction
- Pacer
- palpitations
- Pauses and clumped beats
- PE
- PE vs. STEMI
- PEA
- peaked P waves
- Pediatric ECG
- Pediatric ECG Interval Table
- Pediatrics
- Pericardial effusion
- Pericardial Tamponade
- Pericarditis
- pericarditis vs acs
- Pericarditis vs. STEMI
- Periodic paralysis
- Persistent juvenile T-wave pattern
- PFO
- PGY-2 (Intermediate) Resident Curriculum
- PGY-3 (Advanced) Resident Curriculum
- PGY1 Curriculum
- PJC
- PJCs
- PJTW
- plaque rupture
- plaque vulnerability
- PMVT
- Pokey T wave
- Polymorphic Ventricular Tachycardia
- Polymorphic VT
- Polyuria
- Poor R Wave Progression (PRWP) DDx
- Poor R-wave progression
- post arrest ECG
- post cardiac arrest ECGs
- post-arrest
- Post-Arrest ECG for Dysrhythmias
- Post-Arrest ECG for Ischemia
- Post-arrest NSTE-ACS
- Post-arrest STEMI
- post-cardiac arrest ecg
- post-mi pericarditis
- Post-Thrombolytic Reperfusion ECG Findings
- Posterior MI
- Posterior Occlusion MI
- POSTERIOR OMI
- Posterior STEMI
- Posterior STEMI Criteria
- postural orthostatic tachycardia syndrome
- Potpourri
- POTS
- PR interval
- PR segment
- PR Segment Basics
- PR segments
- Pre-hospital ECG
- precordial lead misplacement
- precordial swirl
- preexcitation
- preexcitation syndrome
- Preexcitation syndromes
- preexcited af
- preexcited atrial fibrillation
- Pregnancy
- Prehospital ECG
- premature atrial complexes
- Premature Atrial Complexes (PACs)
- Premature beats
- Premature complexes
- premature contractions
- premature junctional complexes
- Premature Junctional Complexes (PJCs)
- Premature Ventricular Complexes (PVCs)
- Prolonged QT
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- prolonged QTc
- Proper 12-Lead ECG Electrode Placement
- Proper ECG Lead Placement
- proper lead placement
- proportionality
- PRWP
- Pseudo Wellens
- Pseudo-Wellens waves
- Pseudonormalization of T-waves
- Pulmonary Embolism
- pulmonary hypertension
- Pulse tapping artifact
- pulse-tapping
- Pulseless Electrical Activity (PEA) in Cardiac Arrest)
- PVC
- PVCs
- PVT
- Q-waves
- QRS
- QRS axis
- qrs axis basics
- QRS Complexes
- QRS fragmentation
- QRS Fragmentation (fQRS)
- QRS morphology
- qrs voltage
- QRS-interval
- QRS-T proportionality
- QT interval
- QT Interval Basics
- QTc interval
- R wave basics
- R waves
- R-on-T phenomenon
- R-wave
- R-wave in V1
- R-wave progression
- RAD
- RAE
- rapid af
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- rapid atrial fibrillation
- rate & rhythm
- RBBB
- Really wide complex tachycardia
- reciprocal changes
- Recommended ECG Books
- Reflux
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- repeat ecg
- repolarization abnormalities
- Rescue PCI
- Resolved ST segment elevation
- Resources & Recommendations
- Respiratory variation
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- reversible causes
- Revised Sgarbossa Criteria
- Rhythm
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- right atrial enlargement
- Right axis
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- Right Axis Deviation + STE DDx
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- Right Axis Deviation Basics
- Right Axis Deviation DDx
- Right bundle branch block
- right heart strain
- Right sided leads
- Right Ventricular (RV) STEMI Criteria
- Right Ventricular Hypertrophy
- Rightward axis
- rollercoaster T waves
- RRWCT
- RV MI
- RV Outflow Tract Tachycardia (RVOT VT)
- RV Outflow Tract Tachycardia (RVOT)
- RV STEMI
- rvh
- RVH with strain
- RVMI
- RWCT
- S wave
- S waves
- s5
- SAH
- Salvador Dali
- SANRT
- SCAD
- second degree av block
- Second-Degree AV Block Type I (Mobitz I / Wenckebach)
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- Second-Degree AV Block with 2:1 Conduction
- segments
- Seizure
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- Septal STEMI
- Serial ECG
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- Severe Hyperkalemia
- Severe Hypothermia
- Severe hypothyroidism
- Sgarbossa
- Sgarbossa Criteria
- Shark fin morphology
- Shark Fin or Triangular STEMI
- Shark fin STEMI
- Short PR interval
- Short QT
- Short QT interval
- Short QT Syndrome
- Short QTc
- Shortened QT
- SHS
- sick sinus syndrome
- Sinoatrial Exit Block
- Sinoatrial Nodal Reentry Tachycardia
- Sinoatrial Nodal Reentry Tachycardia (SANRT)
- Sinus arrest
- sinus arrhythmia
- sinus bradycardia
- sinus inversus totalis
- Sinus Node Dysfunction
- Sinus Node Dysfunction (Sick Sinus Syndrome
- sinus rhythm
- Sinus rhythms
- Sinus Tachycardia
- situs inversus
- situs inversus totalis
- Sloof Lirpa Sign
- Slow Atrial fibrillation
- slow ventricular tachycardia
- slow vt
- Sodium channel blocker toxicity
- South Africa
- South Africa sign
- South African
- South African Flag Sign
- spiked
- Spiked Helmet sign
- spiked-helmet
- Spodick Sign
- Spodick’s Sign
- Spontaneous Coronary Artery Dissection
- Spontaneous Coronary Artery Dissection (SCAD)
- ST
- ST depression
- ST depression differential
- ST Depression in V1-V4 DDx
- ST depression V1-V4
- ST Elevation
- ST Elevation DDx
- ST Elevation in aVR DDx
- ST segment elevation
- ST Segment Elevation in aVR with Multi Lead ST Segment Depression
- ST-segment
- ST-segment depression
- Start high-quality CPR.
- stat
- stat ecg
- stat ecgs
- STD
- STE
- STE differential diagnosis
- STE in aVR
- steeple sign
- Steeple sign in V1
- STEMI
- STEMI Criteria
- STEMI Criteria & STEMI Equivalent Patterns
- STEMI diagnosis
- STEMI equivalent
- STEMI equivalents
- STEMI mimics
- STEMI vs. acute pericarditis
- STEMI vs. Early repolarization
- STEMI vs. Severe Hyperkalemia
- stepwise approach
- strain
- Stress Testing
- Stress tests
- Stress-Induced (Takotsubo) Cardiomyopathy
- Student Level Curriculum
- Subtle ST elevation
- Subtle ST Segment Elevation (STE)
- subtle stemi
- Supraventricular tachycardia
- Supraventricular Tachycardia (SVT)
- Sustained VT
- SVT
- sympathomimetic
- synchronization
- Syncop
- Syncope
- syncope ddx
- syncope differentials
- syncope emergencies
- Systematic approach to ECG
- T wave
- T wave inversion differential
- T Wave Inversion in V1-V3 DDx
- T wave inversions in V1-V3
- T wave morphology
- T-wave abnormalities
- T-wave alternans
- T-wave inversion
- T-wave inversions
- T-waves
- Tachycardia
- Takotsubo Cardiomyopathy
- Takotsubo Cardiomyopathy vs. STEMI
- Tall R wave in aVR
- Tall R wave in V1
- Tamponade
- TCA
- TCA overdose
- TCA toxicity
- TdP
- Tension Pneumothorax
- Terminal QRS distortion
- Terminal QRS Distortion (OMI Pattern)
- the basics
- The Bix Rule
- The Bix Rule – Unmasking Atrial Flutter
- The Curriculum
- third degree AV block
- Third-Degree AV Block (Complete Heart Block)
- Thrombolytics
- tombstone
- tombstoning
- too many P waves
- Too Many P Waves (P:QRS>1) DDx
- Top 10 cases of the past 10 years
- Torsades
- Torsades de pointes
- Torsades de Pointes risk
- torsades de points
- Toxicologic Emergencies
- Toxicology
- TP segment
- Transient STEMI
- Tremor artifact
- trifascicular block
- Trigeminy
- Troponin
- troponins
- TWI
- Type A Wellens
- Type B Wellens
- U-waves
- Understanding ECG Artifacts
- unifascicular
- unstable angina
- unstable bradycardia
- unstable tachyarrhythmia
- unstable tachycardia
- Upright T waves in V1
- urgent cath
- V1
- v1-v2 placed too high
- V1/V2
- vasospasm
- Ventricular aneurysm
- Ventricular dysrhythmias
- ventricular escape rhythms
- Ventricular fibrillation
- ventricular fibrillation mimics
- Ventricular Flutter
- Ventricular rhythm
- Ventricular rhythms
- Ventricular Tachycardia
- Ventricular Tachycardia (VT)
- Ventricular tachycardia mimics
- Ventricular tachycardia vs. SVT with aberrant conduction
- Ventricular Tachycardiak
- Vereckei aVR
- VF
- voltage
- VT
- VT mimics
- VT vs. SVT with Aberrancy
- w Voltage
- waveforms
- waves
- WCT
- Wellens
- Wellens waves
- Wellens’ syndrome
- Wide & Regular Tachydysrhythmia DDx
- wide complex irregular tachycardia
- Wide complex QRS
- wide complex regular tachycardia
- Wide complex tachycardia
- Wide QRS
- Wide QRS (BBBs & Paced Rhythms) vs. STEMI
- wide qrs bradycardia
- Wide QRS Complex DDx
- wide qrs differential
- Wide QRS interval
- wide vs. narrow QRS
- Wolff Parkinson White
- Wolff-Parkinson White (WPW) Syndrome
- WPW
- wpw syndrome
- WPW syndrome and Pseudo-MI patterns
- WPW vs STEMI
- WPW with Antidromic SVT
- WPW with atrial fibrillation
- WPW with Orthodromic SVT
- WPW with SVT
- Yamaguchi
- Yamaguchi (Apical) Hypertrophic Cardiomyopathy
- Yamaguchi syndrome
- Young patients
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