2785 results
Hyperkalemia after Missed Hemodialysis - Initial electrocardiogram showed peaked T waves and a prolonged QT segment
T waves and a prolonged ... A) #Clinical #Cardiology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
sinus rate and prolongs ... Channel Blockade • Prolongs ... action potential • Prolongs ... sinus rate and prolongs ... Classification #Classes #cardiology
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
Ventricular Pacing Prolonged ... mortality than prolonged ... pathophysiology #ekg #ecg #cardiology
Atrial Fibrillation w/incomplete RBBB, Prolonged QTc (510ms), TWI in Leads III, V2 and V3. Inconsistent electrical
incomplete RBBB, Prolonged ... Electrocardiogram #Cardiology
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
by drugs that prolong ... TorsadesDePointes #Diagnosis #Cardiology
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
Prolongs repolarization ... period, results in prolonged ... Pharmacology #Agents #Cardiology
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
interval (normal or prolonged ... Type2 #diagnosis #cardiology
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
brady/arrest, prolonged ... Indications #PPM #cardiology
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
Heart Block: • Prolonged ... Wenckebach): • Prolonged ... electrocardiogram #ecg #cardiology
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
by drugs that prolong ... TorsadesDePointes #Diagnosis #Cardiology