14 results
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
(MAT) ≥ 3 different ... retrograde) - AVNRT ... #differential # ... diagnosis #causes ... #cardiology
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
(MAT) • AV node ... tachycardia (AVRT ... tachycardia (AVNRT ... #Diagnosis #Causes ... #cardiology
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Nodal Reentrant Tachycardia ... - In most case ... ECG usually shows ... at rates of 120 ... #cardiology #SVT
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Tachycardia - Differential ... • ST vs SVT (AVNRT ... variable block >> MAT ... abnormality • Beware AV ... #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Converts - Probably AVnRT ... Control rate with AV ... Treat underlying cause ... atrial flutter or MAT ... Treatment #management #cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
ST elevation: Differential ... criteria only looks at ... electrocardiogram #diagnosis #ekg ... #differential # ... cardiology
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
simultaneously at ... EKG of the same ... to diagnose the case ... excludes other differentials ... #JVP #Cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
(MAT) - 3 ... different P waves ... #EKG #diagnosis ... electrocardiogram #cardiology ... #differential
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Causes of ST Segment ... Elevation - Differential ... block; and sinus tachycardia ... #diagnosis #cardiology ... #ecg #ekg #electrocardiogram
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
short QT, Osborn J ... assoc with 1K, AV ... #EKG #Checklist ... #diagnosis #cardiology ... electrocardiogram #differential