ECG Made Easy 3 Flashcards Preview

Jason's MD2 Core Conditions > ECG Made Easy 3 > Flashcards

Flashcards in ECG Made Easy 3 Deck (27)
1

4 places where cardiac rhythm can begin?

SA Node
AV Node
Atrial Muscle
Ventricular Muscle

2

what looks weird in a ventricular rhythm?

wide QRS
T wave is abnormal

3

Supraventricular rhythm QRSs look

normal

4

AV node naturally depolarizes at how many beats/min?

50beats/min
(escape rhythms)

5

Ventricular focus naturally depolarizes at how many beats/min?

30 beats/min
(escape rhythms)

6

Atrial escape comes from?

atrial focus

7

Junctional Escape rhythm?

area around AV node controls rate

8

When do you see venticular escape?

in complete heart block

9

ventricular tachycardia needs to be how fast to be dx?

120/min

10

Carotid Sinus pressure only affects what?

supraventricular tachys
No ventricular arrythmias

11

ventricular tachycardia looks like? How fast?

abnormally wide, no T-waves
200/min

12

characteristic of LBBB in V6?

'M' and inverted T-wave

13

where is origin if QRS is wider than 160ms?

probably ventricular origin

14

how to tel from the QRS complex is the rhythm is atrial fibrillation with BBB?

QRS complex is very irregular

15

Wolfe-Parkinson-White syndrome is?

accessory bundle from atria to ventricle, no AV node to delay conduction

16

Wolfe-Parkinson-White syndrome bundle what side of heart usually?

left side of heart

17

what dies Wolfe-Parkinson-White syndrome ECG look like?

short P-R interval
QRS has early slurred 'delta' wave (pre-excitation)

18

significance of Wolfe-Parkinson-White syndrome?

can have re-entry circuit and get sustained tachycardia

19

Which leads looks at left lateral surface of heart?

I, aVL, VI

20

Which leads look at inferior heart?

II, II, aVF

21

which leads look at anterior of heart?

V1,V2,V3, V4

22

Where does the right coronary artery follow?

Anterior Atrioventricular Groove

23

what runs in posterior AV groove?

Circumflex - marginal branches

24

LAD gives off what branches?

diagonal branches

25

Why do you get ST-elevation?

due to a action potential difference in endo and epicardium. ST elevation is detecting the current going from endo>>epi

26

what are Q waves?

What you get at the end of an infarct, a negative reflection due to the 'electrical hole' on the area of infarct

27

actional potential travels from where to where?

endo>>epicardium