13 results
TCA Overdose on EKG
 • Sinus tachycardia
 • QRS prolongation
 • QT prolongation
 • Rightward deviation
TCA Overdose on EKG ... prolongation • QT ... #ECG #electrocardiogram ... #cardiology #diagnosis ... #clinical #criteria
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... quinidine) •Class IC ... TorsadesDePointes #Diagnosis ... #Cardiology #ECG ... #EKG
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
• ↑ Ca - short QT ... • ↓ Ca - long QT ... • ↓ Mg - long QT ... -500ms) Short QT ... #diagnosis #cardiology
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
Approach to ECGs ... DANGER - Short QT ... : ↑ca - Long QT ... #EKG #diagnosis ... electrocardiogram #cardiology
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
that prolong the QT ... quridine) Class IC ... TorsadesDePointes #Diagnosis ... #Cardiology #ECG ... #EKG
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
on ECG • Conventional ... #Equivalents #ECG ... #EKG #diagnosis ... #differential # ... cardiology #electrocardiogram
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
and their Key Pharmacologic ... in wide QRS on EKG ... results in prolonged QT ... Antiarrhythmics #Pharmacology ... #Agents #Cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... diagnosis includes ... widened QRS and QTc ... #ekg #differential ... #cardiology
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Diagnosis Framework ... and a prolonged QT ... waves - Short QT ... waves • Short QT ... #diagnosis #cardiology
Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
., long QT syndrome ... may not occur Differential ... Diagnosis: • PAC ... #differential # ... cardiology