20 results
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
, Orthodromic AVRT ... , Atrial flutter ... AV block, Multifocal ... block, Antidromic AVRT ... AV block & bundle
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... • Classic EKG ... in aVR in narrow ... , AVRT, atrial tachycardia ... #AVR #leadAVR #ecg
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
• SA Block • AV ... • AVRT (ie. ... interval) • AFib ... with Variable AV ... tachyarrhythmias #Cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
SVTs - atrial/junctional ... rhythms (5) AV ... block (lower AV ... bradyarrhythmia #ECG ... #EKG #diagnosis
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
deflection not AVRT ... • SVT. 140-280 ... • Atrial Flutter ... • DDx: SVT + ... Diagnosis #Management #cardiology
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
vs SVT (AVNRT, ... OAVRT, AFIutter) ... > SVT+conduction ... abnormality • Beware AV ... #cardiology
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Syndrome (SSS) • AV ... node: AV re-entrant ... tachycardia (AVRT ... ), AV nodal re-entrant ... #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Atrial flutter ... "PSVT" (atrioventricular ... , AVRT, Junctional ... differential #diagnosis #causes ... #cardiology
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... Diagnosis Algorithm Narrow ... flutterAV ... tachycardia • AV ... #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Treatment of Stable Narrow-Complex ... or AVRT - Observe ... Control rate with AV ... Control rate (e.g ... Control rate (e.g