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
QT / QTc Interval Measurement in Irregular Rhythms
2 Approaches:
 • Measure and calculate the QTc for
QT / QTc Interval ... following the longest ... intervals on the EKG ... #diagnosis #ecg ... #ekg #electrocardiogram
Congenital Long QT Syndrome: Illness Script

Who?
 - Kids or young adults, usually < 30
 - high
QT Syndrome: Illness ... **Get baseline EKG ... - QT prolonging ... QTc) - Refer ... Syndrome #Diagnosis #Cardiology
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... QT via long ST ... Syncope #Syndromes #ECG ... #EKG #Checklist ... #diagnosis #cardiology
Classic EKG triad of long QT, ST-depression, and PVCs in Hypokalemia
Worry about hypokalemia; this patient had
Classic EKG triad ... of long QT, ST-depression ... #Hypokalemia #LongQTC ... #PVCs #EKG #ECG ... Electrocardiogram #Cardiology
EKG with Cerebral T Waves in Subarachnoid Hemorrhage

ECG of a 45-year-old man who suddenly collapsed to
EKG with Cerebral ... There is a long ... QT. ... Cerebral #TWaves #ECG ... Hemorrhage #SAH #Cardiology
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
DANGER - Short QT ... 360 ms: ↑ca - Long ... QT: "antis and ... #Approach #ECG ... #EKG #diagnosis
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Algorithm Drugs ... that prolong QT ... Donepezil Congenital long ... QT Syndrome Electrolyte ... #Algorithm
Checklist Approach to Hypokalemia

Consider risk factors for arrhythmia:
 - EKG changes (especially QT prolongation)
 - Digoxin
arrhythmia: - EKG ... changes (especially QT ... their validity (e.g ... clinical context & EKG ... #CriticalCare