12 results
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Electrocardiogram ... - Decreases AV ... fibrillation and ... atrial flutter ... rate control) - Heart
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
with Complete Heart ... Block and Accelerated ... Tachycardia with 2:1 ... AV Block • Bidirectional ... #ekg #electrocardiogram
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... 1. ... events in-hospital. heart ... Subepicardial atrial ... #electrocardiogram
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
Cheat Sheet 1) ... (e.g. ectopic atrial ... Dominant R wave in aVR ... proportional to heart ... #Electrocardiogram
Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
Hypokalemia • Bundle ... : • Low: <1 percent ... Intermediate burden: >1 ... 300 = NSVT EKG ... capture of the atria
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
in Right Atrium ... Diagnosis 1. ... Small secundum ASD ... echocardiogram #s4c ... #pocus #bubble
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
1 AV conduction ... independently of the atria ... #Blocks #heart ... #ekg #diagnosis ... #electrocardiogram
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
relationship (2:1 ... or 3:1 block) ... association between P and ... QRS • Atrial ... #electrocardiogram
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
assoc with 1K, AV ... below), 1st degree heart ... #EKG #Checklist ... diagnosis #cardiology #electrocardiogram ... #differential
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
Palpitations - Differential ... tachycardia • Premature ... : SVT-AVNRT or AVRT ... Family history of premature ... Palpitations #Cardiology #Differential