Waveforms Ect.
What are three things that describe a normal p wave?
small, round and upright.
Which HR calculation method is the fastest but least accurate?
6 second method
What is the definition of Artifact
unwanted interference on the EKG machine.
How many seconds is a small block equal to?
.04 seconds
What does ST segment elevation determine?
Present MI
Where is the QRS duration located?
From the beginning of the q wave to the end of the s wave
QRS complexes, 10
List four causes of A/C Interference
electronics/electricity, jewelry, crossed wires, medical devices.
What are the three natural pacemakers and their rates?
SA 60-100, AV 40-60, VENT 20-40
What does ST segment depression determine?
Ischemia
Where is the PR interval located?
From the beginning of the p wave to the beginning of the q wave
The sequence method involves counting ______ blocks and dividing _____ by the number of blocks you count.
large, 300
What artifact can Parkinson's or seizure activity cause.
Somatic Tremor
Which setting is 25mm/sec referring to? And 10mm/mv?
chart speed, gain(amplitude)
If a pacemaker spike is shown before the p wave, it is what type of pacemaker?
A pacer
Normal PRI range
.12-.20 seconds
The 1500 method involves counting _______ blocks and dividing _____ by the number of blocks you count.
small, 1500
List two causes of Interrupted Baseline
dirty leads, damaged leads
What is the normal calibration setting?
10mm X 5mm
If a pacemaker spike is shown followed by a wide QRS, what type of pacemaker is it?
V pacer
Normal QRS duration range
.04- .10 seconds
1500 method and sequence method are typically used for ________ rhythms, while second is typically used for _________ rhythms.
regular, irregular
Wandering Baseline
What three things represent ventricular depolarization, ventricular repolarization and atrial depolarization?
QRS complex, T wave, P wave
What is the difference between A fib and A flutter? And which type is each of them.
regularity, fib- irreg, flutter- reg