23 results
Multifocal Atrial Tachycardia (MAT)
• At least 3 different P wave morphologies: 
• Rate 100-180
• Irregular 
Etiology
Tachycardia (MAT ... different P wave ... #Tachycardia #MAT ... #Cardiology #Diagnosis ... #ECG #EKG #Management
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Atrial fibrillation ... Tachycardia (MAT ... 3 different P wave ... differential #diagnosis #causes ... #cardiology
Multifocal Atrial Tachycardia (MAT) on EKG
 • Heart rate > 100 bpm (usually 100-150 bpm)
 •
Multifocal Atrial ... Tachycardia (MAT ... ) on EKG • Heart ... 3 distinct P-wave ... #cardiology #EKG
Counterclockwise and (Left) vs Clockwise (Right) Flutter
Typical atrial flutter is counterclockwise in direction and originates from
in the inferior ... At times, the direction ... in the inferior ... #Diagnosis #ECG ... #EKG #Cardiology
EKG in Acute Pulmonary Embolism
The sensitivity and specificity for EKG findings in acute PE are low.
EKG
evaluating for other causes ... Drive: • Sinus Tachycardia ... also a result of atrial ... • Dominant R Wave ... Leads (VI-V3) +/- Inferior
Cannon A Waves on Neck Examination

Cannon a waves! Notice that it occurs randomly, not predictably w/
block, or, as this case ... for DDI and an atrial ... tachycardia much ... than the PPM’s max ... VivekKulkarniMD #CannonA #AWaves
Multifocal Atrial Arrhythmias on ECG
Multifocal atrial rhythm & Multifocal atrial tachycardia
ECG Recognition:
 • Variable P wave
tachycardia ECG ... morphology of at ... #MAT #Multifocal ... #tachycardia #cardiology ... #diagnosis #ekg
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
artery (LMCA). left anterior ... Subepicardial atrial ... aVR • Classic EKG ... : AVNRT, AVRT, atrial ... criteria only looks at
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate (e.g ... Treat underlying cause ... flutter or MAT ... Treat underlying cause ... Treatment #management #cardiology
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
nodal conduction Uses ... and atrial flutter ... (at therapeutic ... or biphasic T waves ... #Cardiology #Digitalis