CRAT Review exam with 100% correct
answers 2024
Transtelephonic Monitoring - answer-Transmitted over phone to a
LICENSED practitioner to read (magnetic tape), Patients use up to 30
days
Digital Monitoring - answer-Transmitted over a computer where
report is verified by a licensed practitioner
Telemedicine monitoring is usually used to evaluate_____________ -
answer-Artificial Pacemaker Functioning
Ambulatory Monitor - answer-Most common type is holter monitor
(continuous or intermittent-only records when patient has
symptoms. Used for dysrhythmias, evaluation cardic meds, and
checking pacemakers-24-48 hrs-up to 30 days
Procedure for applying ambulatory monitor (holter) - answer-Educate
patient, equipment gathered and prepared, electrodes placed on
chest, equipment hooked up
Procedure for removing - answer-before removing, diary must be
complete by patient, then turn off recording, remove electrodes,
clean skin, report results
*process is based on type of equipment uses
,CRAT Review exam with 100% correct
answers 2024
Functions of common ECG machine - answer-3 basic functions are
input, signal processing, output display. Sensors in ECG machine
serve as receiving devices for the electrical activity of the heart.
INPUT-Electrode placed on patients skin direct impulses to ECG
instrument, providing the input. Signal processing happens in ECG
machine, output display is the result of processing and is shown on
screen (known as oscilloscope) and/or on ECG tracings. Electronic
output is quickly becoming most common choice for ECG tracings.
ECG machine controls - answer-# most common are speed, gain,
artifact filter.
also have these controls: LCD display, heart rate limits,
standardization, and lead section
Speed control - answer-regulates how fast or slow the paper or data
run during procedure. MOST COMMONLY USED: 25 mm/sec
*increasing the speed for example to 50mm/sec will make wave
forms appear wider and is useful if patient heart rate is very fast. if
you change the speed you must note on tracing by circling the setting
on tracing and notify the healthcare provider
*speed in measure on a horizontial axis
Gain - answer-control on ECG machine that increases or decreases
size of ECG tracing. Normal setting is 10mm/mV. 20mm/V will double
size and 5mm/V will reduce size by half
, CRAT Review exam with 100% correct
answers 2024
* NEED TO KNOW mV is a millivolt-unit of measurement to indicate
voltage- Voltage is measures on a vertical axis
Artifact Filter - answer-unwanted marks on ECG tracing caused by
something other than heart activity
*Normal settings is between 40-150Hz, 40 Hz can be used to reduce
artifact
3 most common causes of artifact are: - answer-Somatic tremor,
wandering baseline, and AC interference
History of ECG - answer-1903-Wilhelm Einthoven
ECG graph paper - answer-Boxes are 5mm by 5mm and indicate .04
seconds in time horizontally and .1 mV in voltage vertically
How many seconds are between 3 tick marks on top of ecg paper? -
answer-6 seconds
EGC PAPER provides measurement for both______ - answer-time and
voltage.
smallest box =.04 second in time and 1mm or .1mV in voltage
2 large boxes =10mm, which equals 1cm for vertical measurement.
answers 2024
Transtelephonic Monitoring - answer-Transmitted over phone to a
LICENSED practitioner to read (magnetic tape), Patients use up to 30
days
Digital Monitoring - answer-Transmitted over a computer where
report is verified by a licensed practitioner
Telemedicine monitoring is usually used to evaluate_____________ -
answer-Artificial Pacemaker Functioning
Ambulatory Monitor - answer-Most common type is holter monitor
(continuous or intermittent-only records when patient has
symptoms. Used for dysrhythmias, evaluation cardic meds, and
checking pacemakers-24-48 hrs-up to 30 days
Procedure for applying ambulatory monitor (holter) - answer-Educate
patient, equipment gathered and prepared, electrodes placed on
chest, equipment hooked up
Procedure for removing - answer-before removing, diary must be
complete by patient, then turn off recording, remove electrodes,
clean skin, report results
*process is based on type of equipment uses
,CRAT Review exam with 100% correct
answers 2024
Functions of common ECG machine - answer-3 basic functions are
input, signal processing, output display. Sensors in ECG machine
serve as receiving devices for the electrical activity of the heart.
INPUT-Electrode placed on patients skin direct impulses to ECG
instrument, providing the input. Signal processing happens in ECG
machine, output display is the result of processing and is shown on
screen (known as oscilloscope) and/or on ECG tracings. Electronic
output is quickly becoming most common choice for ECG tracings.
ECG machine controls - answer-# most common are speed, gain,
artifact filter.
also have these controls: LCD display, heart rate limits,
standardization, and lead section
Speed control - answer-regulates how fast or slow the paper or data
run during procedure. MOST COMMONLY USED: 25 mm/sec
*increasing the speed for example to 50mm/sec will make wave
forms appear wider and is useful if patient heart rate is very fast. if
you change the speed you must note on tracing by circling the setting
on tracing and notify the healthcare provider
*speed in measure on a horizontial axis
Gain - answer-control on ECG machine that increases or decreases
size of ECG tracing. Normal setting is 10mm/mV. 20mm/V will double
size and 5mm/V will reduce size by half
, CRAT Review exam with 100% correct
answers 2024
* NEED TO KNOW mV is a millivolt-unit of measurement to indicate
voltage- Voltage is measures on a vertical axis
Artifact Filter - answer-unwanted marks on ECG tracing caused by
something other than heart activity
*Normal settings is between 40-150Hz, 40 Hz can be used to reduce
artifact
3 most common causes of artifact are: - answer-Somatic tremor,
wandering baseline, and AC interference
History of ECG - answer-1903-Wilhelm Einthoven
ECG graph paper - answer-Boxes are 5mm by 5mm and indicate .04
seconds in time horizontally and .1 mV in voltage vertically
How many seconds are between 3 tick marks on top of ecg paper? -
answer-6 seconds
EGC PAPER provides measurement for both______ - answer-time and
voltage.
smallest box =.04 second in time and 1mm or .1mV in voltage
2 large boxes =10mm, which equals 1cm for vertical measurement.
