ECG Review Chung

Question 1

How long is normal QRS complex?

Answer 1

0.12 (3 squares)

Question 2

What is the normal range of heart axis?

Answer 2

-30 to +120

Question 3

what does QT corrected mean?

Answer 3

it’s corrected to a heart rate of 50

Question 4

how can you tell it’s SVT on ECG?

Answer 4

no R-waves
regular
narrow complex tachycardia

Question 5

initial management of SVT?

Answer 5

valsalva by blowing through syringe

Question 6

medication for SVT?

Answer 6

adenosine

Question 7

medication for Ventricular Tachycardia?

Answer 7

amiodarone

Question 8

describe ECG Atrial flutter:

Answer 8

usu. 150 rate, saw tooth pattern

Question 9

how can you tell WPW on ECG?

Answer 9

short PR interval
delta wave (upstroking)

Question 10

2 kinds of WPW

Answer 10

orthodromic (narrow complex tachy)

anti-dromic (wide complex tachy)

Question 11

How long is the normal PR interval?

Answer 11

0.12 (3 squares) to 0.21 (5 squares)

Question 12

what to treat with for WPW anti-dromic?

Answer 12

procainamide

Question 13

3 things you must do for Third degree heart block:

Answer 13

atropine
ionotropes
pacing

Question 14

whats the HR in someone with third degree heart block?

Answer 14

35-40

Question 15

BP equation is?

Answer 15

BP = CO xTPR

Question 16

Cardiac Output equation?

Answer 16

CO = HR x SV

Question 17

what’s worse mobitz I or II

Answer 17

II where the PR is constant and get get dropped beats

Question 18

Mobitz II AKA?

Answer 18

Wenckebach phenomenon

gradual prolongation of PR

Question 19

3 kinds of trifascicular block

Answer 19

1st degree + LAD + RBBB
1st degree + RAD + RBBB
1st degree + Full LBBB

Question 20

what’s the 3 ECG criteria for STEMI?

Answer 20

ST elevation of >2mm in 2 contiguous Anterior leads
ST elevation of >1mm in limb leads
New LBBB

Question 21

treatment for Torsades?

Answer 21

Magnesium to stabilize the membrane

Question 22

what does magnesium do to heart?

Answer 22

stabilize the membrane