26 results
REBEL Review 100: Canadian Syncope Risk Score 

Predisposition to Vasovagal Symptoms (-1)
History of Heart Disease (1)
Any
100: Canadian Syncope ... (1) Corrected QT ... Interval > 480 ... (2) Vasovagal Syncope ... (-2) Cardiac Syncope
Differential Diagnosis of Syncope
First, is it syncope? History is very important for distinguishing syncope from other
First, is it syncope ... distinguishing syncope ... from other causes ... syncope and their ... #Algorithm #Ddxof
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... and prolongs PR interval ... potential • Prolongs QT ... interval Class ... and prolongs PR interval
Causes of Syncope #Diagnosis #EM #IM #Neuro #Syncope #Differential #Algorithm #Ddxof
Causes of Syncope ... EM #IM #Neuro #Syncope ... #Differential #Algorithm
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
that prolong the QT ... intervalClass ... quinidine) •Class
WOBBLER  for ECG assessment in Syncope 
W - Wolff Parkinson White 
O - Obstructed AV
assessment in Syncope ... missed in the syncope ... for a short PR interval ... found in long QT ... is also a short QT
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... (constant R-R Interval ... setting of long QT ... Differential #Diagnosis #Algorithm ... #causes
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Pointes - Management Algorithm ... Drugs that prolong QT ... interval: • Class ... Congenital long QT ... TDP #Management #Algorithm
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Classification: CLASS ... depolarization • ↑ PR interval ... Duration) - ↑ QT ... interval (delays ... velocity) - ↑ PR interval
Causes of Pediatric Spells - Differential Diagnosis Algorithm
Neonates and Infant Spells:
 • Benign Sleep Myoclonus
 •
Causes of Pediatric ... Differential Diagnosis Algorithm ... Daydreaming • Syncope ... Differential #Diagnosis #Algorithm ... #Causes #Peds #