CRAT Updated Study Guide UPDATED ACTUAL Exam Questions
and CORRECT Answers | Focused Revision Pack | Grade A+
Question 1.
Transtelephonic Monitoring
Correct Answer: Transmitted over phone to a LICENSED practitioner to read
(magnetic tape), Patients use up to 30 days
Question 2.
Digital Monitoring
Correct Answer: Transmitted over a computer where report is verified by a
licensed practitioner
Question 3.
Telemedicine monitoring is usually used to evaluate_____________
Correct Answer: Artificial Pacemaker Functioning
Question 4.
Ambulatory Monitor
Correct 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
Question 5.
Procedure for applying ambulatory monitor (holter)
Correct Answer: Educate patient, equipment gathered and prepared,
electrodes placed on chest, equipment hooked up
Question 6.
Procedure for removing
Correct 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
Question 7.
Functions of common ECG machine
Correct 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.
Question 8.
ECG machine controls
Correct Answer: # most common are speed, gain, artifact filter.
also have these controls: LCD display, heart rate limits, standardization, and
lead section
Question 9.
Speed control
Correct 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
Question 10.
Gain
Correct 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
Question 11.
Artifact Filter
Correct 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: -✓✓Somatic tremor, wandering
baseline, and AC interference
Question 12.
History of ECG
Correct Answer: 1903-Wilhelm Einthoven
and CORRECT Answers | Focused Revision Pack | Grade A+
Question 1.
Transtelephonic Monitoring
Correct Answer: Transmitted over phone to a LICENSED practitioner to read
(magnetic tape), Patients use up to 30 days
Question 2.
Digital Monitoring
Correct Answer: Transmitted over a computer where report is verified by a
licensed practitioner
Question 3.
Telemedicine monitoring is usually used to evaluate_____________
Correct Answer: Artificial Pacemaker Functioning
Question 4.
Ambulatory Monitor
Correct 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
Question 5.
Procedure for applying ambulatory monitor (holter)
Correct Answer: Educate patient, equipment gathered and prepared,
electrodes placed on chest, equipment hooked up
Question 6.
Procedure for removing
Correct 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
Question 7.
Functions of common ECG machine
Correct 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.
Question 8.
ECG machine controls
Correct Answer: # most common are speed, gain, artifact filter.
also have these controls: LCD display, heart rate limits, standardization, and
lead section
Question 9.
Speed control
Correct 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
Question 10.
Gain
Correct 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
Question 11.
Artifact Filter
Correct 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: -✓✓Somatic tremor, wandering
baseline, and AC interference
Question 12.
History of ECG
Correct Answer: 1903-Wilhelm Einthoven
