Cardio-Abnormal EKG ALA 1 Flashcards
Supraventricular tachycardias have what type of QRS?
narrow
What two types of SVTs originate in sinus?
- sinus tachycardia
- sinus arrhythmia
Which SVT has a heart rate >100, normal rhythm and normal P waves before each QRS complex?
sinus tachycardia
Which SVT has a normal phenomenon that reflects changes in HR during inspiration and expiration?
sinus arrhythmia
Which SVT has a regular rhythm, narrow QRS complex, and absent normal P waves?
PSVTs
What type of AVRT is the most common?
Wolf parkinson white (WPW) syndrome
What is the accessory pathway for the AVRT WPW?
Bundle of Kent
Which SVT has no P wave and can be treated with ablation or vagal maneuvers?
AVNRT
What is a common feature of WPW syndrome?
Delta waves and short PR intervals and long QRS due to delta wave, T wave often opposite QRS complex
Which SVT has regular rhythm w/ P waves that give a sawtooth appearance?
Atrial flutter
Which SVT is irregularly irregular rhythm with no P waves?
AFIB
Which SVT is irregularly irregular w/ P waves?
multifocal atrial tachycardia (MAT)
Normally, SVTs have a narrow QRS complex except?
Antidromic AVRT which conduction pathway is opposite normal conduction. It is wide because the depolarization is going cell by cell.
A wide complex QRS antidromic AVRT can be mistaken for V tach, which treatment to use?
No AV blockers, use procainamide
Is cardioversion more geared toward rate or rhythm control?
Rhythm control
What is the difference between normal and poor R wave progression and what could it indicate?
Poor R wave progression refers to the absence of the normal increase in size of the R wave in the precordial leads when advancing from lead V1 to V6.
In lead V1, the R wave should be small. The R wave becomes larger throughout the precordial leads, to the point where the R wave is larger than the S wave in lead V4. The S wave then becomes quite small in lead V6.
anterior MI, LV or RV hypertrophy, innacurate lead placement
