Cardio-Abnormal EKG ALA 1

Question 1

Supraventricular tachycardias have what type of QRS?

Answer 1

narrow

Question 2

What two types of SVTs originate in sinus?

Answer 2

1. sinus tachycardia
2. sinus arrhythmia

Question 3

Which SVT has a heart rate >100, normal rhythm and normal P waves before each QRS complex?

Answer 3

sinus tachycardia

Question 4

Which SVT has a normal phenomenon that reflects changes in HR during inspiration and expiration?

Answer 4

sinus arrhythmia

Question 5

Which SVT has a regular rhythm, narrow QRS complex, and absent normal P waves?

Answer 5

PSVTs

Question 6

What type of AVRT is the most common?

Answer 6

Wolf parkinson white (WPW) syndrome

Question 7

What is the accessory pathway for the AVRT WPW?

Answer 7

Bundle of Kent

Question 8

Which SVT has no P wave and can be treated with ablation or vagal maneuvers?

Answer 8

AVNRT

Question 9

What is a common feature of WPW syndrome?

Answer 9

Delta waves and short PR intervals and long QRS due to delta wave, T wave often opposite QRS complex

Question 10

Which SVT has regular rhythm w/ P waves that give a sawtooth appearance?

Answer 10

Atrial flutter

Question 11

Which SVT is irregularly irregular rhythm with no P waves?

Answer 11

AFIB

Question 12

Which SVT is irregularly irregular w/ P waves?

Answer 12

multifocal atrial tachycardia (MAT)

Question 13

Normally, SVTs have a narrow QRS complex except?

Answer 13

Antidromic AVRT which conduction pathway is opposite normal conduction. It is wide because the depolarization is going cell by cell.

Question 14

A wide complex QRS antidromic AVRT can be mistaken for V tach, which treatment to use?

Answer 14

No AV blockers, use procainamide

Question 15

Is cardioversion more geared toward rate or rhythm control?

Answer 15

Rhythm control

Question 16

If you can control , many can cardiovert on their own.

Answer 16

rate

Question 17

What 2 leads are best to look at for P waves?

Answer 17

V1 and II

Question 18

What is the best way to check QT interval?

Answer 18

look for most pronounced QRS

Question 19

What is the difference between normal and poor R wave progression and what could it indicate?

Answer 19

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

Question 20

What is meant by aberrancy?

Answer 20

Aberrant conduction- BBB, ORS >120ms