24 results
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
Arrhythmias • Atrial ... Complete Heart Block ... Escape Rhythm • Atrial ... Arrhythmias #diagnosis #cardiology ... #ecg #ekg #electrocardiogram
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
(EKG) Digoxin ... Digoxin effect on ECG ... at therapeutic level ... #EKG #Cardiology ... #Digitalis #ECG
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Approach to ECGs ... bradyarrhythmia #ECG ... #EKG #diagnosis ... #electrocardiogram ... #cardiology #differential
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
Approach to ECGs ... Syncope #Syndromes #ECG ... #EKG #Checklist ... #diagnosis #cardiology ... #electrocardiogram
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
Brady Management ... infranodal level ... summary #Diagnosis #EKG ... #electrocardiogram ... #ecg #cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... junction origin (e.g ... (e.g. ectopic atrial ... @AmyChung #EKG ... Interpretation #ECG
Endocarditis checklist
Initial evaluation
 • Peripheral blood cultures (three sets at three different sites)
 • Additional culture
Endocarditis checklist ... if suspected (e.g ... • Persistent fever ... (+/- daily EKG) ... of infection (e.g
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
presence of AV block ... Wandering Atrial ... Sinus #Arrhythmia #cardiology ... #diagnosis #ekg ... #ecg #electrocardiogram
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
: WPW, ectopic atrial ... #Approach #ECG ... #EKG #diagnosis ... #electrocardiogram ... #cardiology #interpretation
Myocarditis
Diagnosis 
• Endomyocardial biopsy (gold standard, rarely performed) 
• Clinical presentation 
• Cardiovascular MRI 
Clinical 
•
gallop • Abnormal ECG ... , echocardiogram ... Dysrhythmia, heart block ... cardiac death Management ... #Cardiology