13 results
Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
Cardiomyopathy • Inherited ... arrhythmia syndromes ... (e.g., long QT ... syndrome, ARVC) ... #differential #cardiology
Inherited Arrhythmia Syndromes
Entity - Prevalence / Incidence - Diagnosis - Arrhythmic Presentation - Management
 • Long
• Long QT Syndrome ... Heart • Short QT ... Syndrome #Inherited ... #clinical #cardiology ... #table
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Digoxin effect on ECG ... mustache) - Flag inverted ... waves - Short QT ... #EKG #Cardiology ... #Digitalis #ECG
Classic EKG triad of long QT, ST-depression, and PVCs in Hypokalemia
Worry about hypokalemia; this patient had
of long QT, ST-depression ... , and PVCs in Hypokalemia ... Hypokalemia #LongQTC #PVCs ... #EKG #ECG #Electrocardiogram ... #Cardiology #Clinical
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... • ↓ Ca - long QT ... • ↓ Mg - long QT ... #diagnosis #cardiology ... #electrocardiogram
Electrocardiographic Features of Digoxin Toxicity
 • Virtually any arrhythmia is possible. None specific for digoxin toxicity
Shortening of QT ... depression • Flattened/inverted ... digitalis #Toxicity #Electrocardiogram ... #ekg #ecg #toxicology ... #cardiology #diagnosis
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
Flattened T waves QT ... • QT interval is ... = QT / √ RR - ... thumb: a normal QT ... #Electrocardiogram
Short QT Syndrome
Short QT syndrome (SQTS) is a very rare, recently described syndrome in which an
Short QT Syndrome ... Short QT syndrome ... unusually short QT ... #cardiology #ecg ... #ekg #electrocardiogram
EKG with Cerebral T Waves in Subarachnoid Hemorrhage

ECG of a 45-year-old man who suddenly collapsed to
These ECG changes ... These bizarre, inverted ... There is a long QT ... #EKG #Electrocardiogram ... Hemorrhage #SAH #Cardiology
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Algorithm Drugs ... that prolong QT ... Congenital long QT ... Syndrome Electrolyte ... #Algorithm