CRAT ACTUAL TEST PAPER ACCURATE
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● 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
●● 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
* 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
QUESTIONS AND CORRECT ANSWERS
GRADED APLUS
●● 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
●● 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
* 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
