Week 4 - EKGs Flashcards
EKG Normals
EKGs - KNOW THIS!!!
PR Interval: 0.12 - 0.20 (3 - 5 small boxes)
QRS Complex: 0.4 - 0.12 (1 - 2.5 small boxes)
What does each wave on an EKG represent?
EKGs - KNOW THIS!!!
P Wave = Atrial Depolarization (contraction)
QRS Complex = Ventricular Depolarization (contraction)
T Wave = Ventricular REpolarization (RElaxation)
How many seconds is 1 small box?
How many seconds are 5 small boxes?
EKGs - KNOW THIS!!!
1 Small Box: = 0.4 seconds
5 Small Boxes = 0.20 seconds
How many seconds is 1 small box?
EKGs - KNOW THIS!!!
0.04 seconds
How many seconds are 5 small boxes?
How many seconds are 5 small boxes?
EKGs - KNOW THIS!!!
0.20 seconds
How many seconds are 5 LARGE boxes equal to?
How many seconds are 30 LARGE boxes equal to?
EKGs - KNOW THIS!!!
5 LARGE = 1 second
30 LARGE = 6 seconds
How do you find the RATE on an EKG?
EKGs - KNOW THIS!!!
(# QRS complexes in 30 small boxes) X 10
Normal Rate = 60 - 100 BPM
How do you calculate the RHYTHM on an EKG?
EKGs - KNOW THIS!!!
Look at the R-R intervals throughout the strip
R-R is SAME throughout = REGULAR rhythm
R-R is different throughout = irregular rhythm
Steps to read an EKG
EKGs
1.) Identify Rhythm (are R-R Intervals same throughout)
2.) Determine Rate (QRS in 30 seconds) x 10
3.) Evaluate P waves (P for every QRS complex?)
4.) Determine PR Interval (is it between 0.12 - 0.20 / 3-5 little boxes)
5.) Determine QRS Interval (is it 0.4 - 0.10 / 1 - 2.5 little boxes)
6.) Evaluate T waves (are there T-waves, are they all the same?)
Sinus Bradycardia
EKGs - KNOW THIS!!!
Slow & Regular
HR < 60 BPM
(# QRS per 30 small boxes) X 10
Sinus Tachycardia
EKGs - KNOW THIS!!!
Fast & Regular
HR > 100 BPM
(# QRS per 30 small boxes) X 10
