15 results
Wolff-Parkinson-White (WPW)
- Orthodromic AVRT: Narrow complex, most common 
- Antidromic AVRT: wide complex because goes through
- Orthodromic AVRT ... - Antidromic AVRT ... : wide complex because ... #ECG #EKG #Electrocardiogram ... #Clinical #Diagnosis
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... tachycardia ddx: AVNRT ... #AVR #leadAVR #ecg ... #electrocardiogram ... #diagnosis #ekg
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
AFlutter • AVNRT ... /AVRT - Bradyarrhythmia ... • 2nd/3rd degree ... #Cardiology #Differential ... #causes
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
QRS often wide. ... to atropine if wide ... #summary #Diagnosis ... #EKG #electrocardiogram ... #ecg #cardiology
Supraventricular Tachycardia EKG

Here’s a great ECG case of a 50-year-old lady who presented with palpitations

Her heart
case of a 50-year-old ... Is it wide or narrow ... @EM_RESUS #AVRT ... #ECG #Electrocardiogram ... #Cardiology #EKG
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Second Degree Heart ... usually (not always) wide ... SecondDegree #HeartBlock #Diagnosis ... #Cardiology #EKG ... #ECG #Electrocardiogram
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
(ISt/2nd /3rd degree ... Aflutter • AVNRT ... • AVRT (ie ... tachyarrhythmias #Cardiology ... #Algorithm #causes
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
brady, peak T, wide ... assoc with 1K, AV ... see below), 1st degree ... #diagnosis #cardiology ... #electrocardiogram
First Degree AV Block
 • The P wave is normal in morphology.
 • PR interval greater
First Degree AV ... in duration or wide ... AVBlock #1st #ecg ... #ekg #cardiology ... #diagnosis
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
exam • 12-lead ECG ... maneuvers: SVT-AVNRT ... or AVRT • Standing ... Red Flag Symptoms ... #Palpitations #Cardiology