11 results
Right Bundle Branch Block (RBBB) - EKG Diagnosis
EKG Criteria:
 • QRS > 0.12 seconds
 • Slurred
Bundle Branch Block ... EKG Criteria: ... #BundleBranch #Block ... #ECG #electrocardiogram ... #cardiology
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
Ml, WPW, LVH, LBBB ... ) - HiPR: AV block ... leads slurred S), LBBB ... V-pacemaker, ↑K, ICD ... EKG #diagnosis #electrocardiogram
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
Phasic Sinus Arrhythmia ... increases (II, Ill ... presence of AV block ... #cardiology #diagnosis ... #ekg #ecg #electrocardiogram
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Tachycardia - Differential ... Don't rely on criteria ... AFIutter + variable block ... /LBBB or identical ... Irregular #causes #cardiology
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
assoc with 1K, AV block ... - RBBB, LAFB/LPFB ... Checklist #diagnosis #cardiology ... #electrocardiogram ... #differential
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
Phasic Sinus Arrhythmia ... increases (II, Ill ... presence of AV block ... #cardiology #diagnosis ... #ekg #ecg #electrocardiogram
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Sinus Tachy w/ BBB ... - w/ variable block ... (3) SA node block ... EKG #diagnosis #electrocardiogram ... #cardiology #differential
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
ST elevation: Differential ... • Predictor of arrhythmia ... • Vereckei criteria ... #leadAVR #ecg #electrocardiogram ... #cardiology
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
wide, can be new/old ... in V1, unless LBBB ... EKG #diagnosis #electrocardiogram ... #cardiology #STEMI ... Interpretation #differential
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Segment Elevation - Differential ... Bundle Branch Block ... morphology similar to LBBB ... bundle-branch block ... #ecg #ekg #electrocardiogram