ECG

Question 1

What are the characteristics for Sinus Rhythm? Inc Ventricular rate, rhythm, P waves, PR interval and QRS interval

Answer 1

rate 60-100 
rhythm regular 
p waves associated with every qrs complex 
PR interval 0.12-0.2 seconds 
QRS duration <0.12 seconds

Question 2

VF - characteristics Inc Ventricular rate, rhythm, P waves, PR interval and QRS interval

Answer 2

Ventricular rate- non discernable  
rhythm- bizarre, chaotic, amplitude >0.1mV 
P waves- non discernible 
PR interval- non discernible 
QRS interval- non discernible

Question 3

VT- Ventricular rate, rhythm, P waves, PR interval and QRS interval

Answer 3

Ventricular rate- >100bpm  
rhythm- regular 
P waves- not associated or non discernible 
PR interval- non discernible 
QRS interval- >0.12 seconds

Question 4

Asystole - Ventricular rate, rhythm, P waves, PR interval and QRS interval

Answer 4

Ventricular rate- non discernable  
rhythm- No electrical activity, flat isoelectric line, amplitude <0.1mV
P waves- non discernible 
PR interval- non discernible 
QRS interval- non discernible

Question 5

ECG paper small square value 
1 small square: 
2 small square: 
3 small square: 
4 small square: 
5 small square:

Answer 5

1 small square: 0.02 seconds
2 small square: 0.08
3 small square: 0.12
4 small square: 0.16
5 small square: 0.2 (=1 large square)

Question 6

ECG paper large square value 
1 large square: 
2 large square: 
3 large square: 
4 large square: 
5 large square:

Answer 6

1 large square: 0.2 seconds 
2 large square: 0.4
3 large square: 0.6
4 large square: 0.8
5 large square: 1 second