10 results
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
the atria and ventricles ... simultaneously at regular ... EKG of the same ... #AVNRT #PhysicalExam ... #JVP #Cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
3 different P wave ... A regular rhythm ... retrograde) - AVNRT ... , AVRT, Junctional ... diagnosis #causes #cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... Subepicardial atrial ... EKG findings: Sinus ... , AVRT, atrial tachycardia ... #differential #cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
1) Rate - Regular ... (e.g. ectopic atrial ... in aVR Poor R wave ... all leads except aVR ... Electrocardiogram #cardiology
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
- Premature atrial ... depolarizes the atria ... ECG usually shows ... : regular narrow ... Pathophysiology #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Narrow-Complex Tachycardia Regular ... Converts - Probably AVnRT ... or AVRT - Observe ... Control rate (e.g ... Treatment #management #cardiology
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
: Use P waves. ... deflection not AVRT ... /AVNRT. ... • Atrial Flutter ... Diagnosis #Management #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
DANGER Narrow - Regular ... (3) SVTs - atrial ... 3 different P waves ... #EKG #diagnosis ... electrocardiogram #cardiology
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
• Narrow & regular ... P and QRS • Atrial ... • Block in AV ... summary #Diagnosis #EKG ... #cardiology
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
• Rapid and regular ... maneuvers: SVT-AVNRT ... or AVRT • Standing ... bending over: AVNRT ... #Palpitations #Cardiology