17 results
Electrocardiographic Features of Digoxin Toxicity
 • Virtually any arrhythmia is possible. None specific for digoxin toxicity
AV conduction) "Digitalis ... Shortening of QT ... Electrocardiogram #ekg ... #ecg #toxicology ... #cardiology #diagnosis
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Electrocardiogram (EKG ... Digoxin effect on ECG ... waves - Short QT ... #Cardiology #Digitalis ... #ECG
Causes of Sudden Cardiac Arrest
Primary Myocardial Processes (> 90%):
 • Acquired structural heart disease: CAD, Most
cardiomyopathies • Congenital ... : Hypertrophic cardiomyopathy ... Channelopathies: Long/short QT ... Acquired long QT ... Cardiac #Arrest #cardiology
Congenital Long QT Syndrome: Illness Script

Who?
 - Kids or young adults, usually < 30
 - high
Congenital Long ... QT Syndrome: Illness ... **Get baseline EKG ... - QT prolonging ... #Diagnosis #Cardiology
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... • ↓ Ca - long QT ... • ↓ Mg - long QT ... #ECG #EKG #Checklist ... #diagnosis #cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... • QT interval is ... = QT / √ RR - ... @AmyChung #EKG ... Interpretation #ECG
Short QT Syndrome
Short QT syndrome (SQTS) is a very rare, recently described syndrome in which an
Short QT Syndrome ... Short QT syndrome ... interval (QTc < ... #cardiology #ecg ... #ekg #electrocardiogram
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
DANGER - Short QT ... : ↑ca - Long QT ... hypo K, hypo Mg, congenital ... #Approach #ECG ... #EKG #diagnosis
WOBBLER  for ECG assessment in Syncope 
W - Wolff Parkinson White 
O - Obstructed AV
WOBBLER for ECG ... found in long QT ... is also a short QT ... Mnemonic #Syncope #EKG ... #ECG #Diagnosis
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Drugs that prolong QT ... • Donepezil Congenital ... long QT Syndrome ... load: 25-50 mg/kg ... Load: 1-1.5 mg/kg