Different methods
The method that uses a 6 second EKG strip, to calculate rate
The 6 second method
Where is the P wave found?
Just before the QRS complex (small , upward bump)
What is the speed of the EKG paper as it leaves the machine?
25 mm/s per second
What does rate mean?
The frequency of heartbeats measured in BPM
What is a normal sinus rate?
60-10 bpm
What do we multiply by when look at a 6 second strip
x 10
How long is a normal PR interval
0.12-0.20 sec
How can you measure EKG paper??
Counting the small and large grid squares that track the time
what is calipers
A measuring tool to calculate time intervals, waived, duration,etc
What method is best used for irregular rhythms?
The 6 second method
What does the QRS complex represent or show?
The electrical depolarization of the ventricles
what does the small boxes represent on the EKG paper?
Measures 1mm by 1mm
time= 0.04 sec
What is a regular rhythm?
Consist of steady heartbeats and consistent intervals
which method is more accurate?
The 1500 method
Is the Q wave always seen?
No
What is the large box mean on ekg paper
measurement: 5 mm by 5mm
time= 0.20 sec
What is a baseline?
The flat line on a EKG, showing no electrical activity
Is the S waveform negative or positive
Negative