Somatic tremor artifact is commonly caused by
patient movement
60 cycle interference is commonly caused by
electrical interference
The most common cause for the P wave, QRS complex, and T wave to be intervened in lead 1 is
incorrect lead placement
The "gain" setting on the EKG machine is concerned with
the amplitude of the wave and complexes
A patient is short of breath and his nurse tells you he must have the head of bed (HOB) at 90 degrees for his 12-lead EKG. You
do the EKG at 90 degrees and document the position on the EKG
Normal paper speed for printing out the EKG is
25 mm/sec
Electrical shock is LEAST likely to be caused by which of the following?
properly maintained EKG machine
If artifact is present in leads I, II, and AVR, the most likely source of the artifacts is on the
right arm
The most important benefit of a three-channel recorder when doing a 12-lead EKG is
all leads can be recorded simultaneously
A digital converter on the EKG machine
converts the analog signal to a digital one
Some modern EKG machines are Bluetooth-cable, allowing EMS workers to
transmit the EKG to the nearest hospital so workers can prepare for the patient's arrival
On your patient's 12-lead EKG, lead I's waves and complexes are completely negative. AVR's wave and complexes are completely positive. The most likely cause of this is
right and left arm leads inadvertently reversed
Your patient for a 12-lead EKG has no legs as a result of bilateral amputations. Where should you put the leg electrodes?
on the lower abdomen above where the legs would be
Your patient is having chills. What kind of artifact can this produce?
somatic tremors
If there is artifact in leads II, III, and AVF, on which limb(s) would you expect to find the cause of the artifact?
left leg
Your patient is smiling and visiting with family, but the cardiac monitor shows that the patient's heart has completely stopped. The rhythm on the monitor is thus
artifact
The artifact caused by the jiggling of wires during toothbrushing is called
toothbrush asystole
If your patient's cardiac rhythm is life-threatening, your FIRST action should be to
check the patient-assess vitals and see how they feel
Muscle artifact can be minimized by monitoring the patient in lead
V1 or MCL
Muscle artifact is seen most often in
the frontal leads
Microshock is different from macroshock in that microshock is
a lower voltage electrical shock
Electrically speaking, the heart is a
transmitter
To minimize artifact, what must be done?
all but B
Small adhesive patches with conductive gel on the skin side are
electrodes
If the artifact in leads I, III, and AVL, the problem is on which limb?
left arm
_____ is unwanted jitter or interference in the EKG tracing
artifact
Electrically speaking, the EKG machine is a ____ and the heart is a transmitter
reciever
The ekg machine control feature that controls the size of the waves and complexes is the ____
gain
Troubleshooting involves determining and alleviating the cause of ____
artifact
A thick-looking pattern on the EKG paper that looks like someone used a thick Magic Maker to write the baseline is typical of what kind of artifact?
60-cycle interference
Baseline sway is caused by lotion or sweat interfering with the ____ reaching the EKG machine
signal
The word "somatic" means _____
body
If artifact is seen in leads I, III, and AVL, you should direvt your corrective efforts to which limb or limbs?____
left arm
Broken recording is caused by _____
frayed wires
CPR artifact is caused by chest compressions obscuring the real _____
rhythms