CRAT Updated Study Guide Questions and
Answers (2026) | Focused Revision Pack |
Grade A+
• Transtelephonic Monitoring -✓✓Transmitted over phone to a LICENSED
practitioner to read (magnetic tape), Patients use up to 30 days
• Digital Monitoring -✓✓Transmitted over a computer where report is verified by a
licensed practitioner
• Telemedicine monitoring is usually used to evaluate_____________ -
✓✓Artificial Pacemaker Functioning
• Ambulatory Monitor -✓✓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) -✓✓Educate patient,
equipment gathered and prepared, electrodes placed on chest, equipment hooked
up
• Procedure for removing -✓✓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 -✓✓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 -✓✓# most common are speed, gain, artifact filter.
also have these controls: LCD display, heart rate limits, standardization, and lead
section
• Speed control -✓✓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 -✓✓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 -✓✓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
Answers (2026) | Focused Revision Pack |
Grade A+
• Transtelephonic Monitoring -✓✓Transmitted over phone to a LICENSED
practitioner to read (magnetic tape), Patients use up to 30 days
• Digital Monitoring -✓✓Transmitted over a computer where report is verified by a
licensed practitioner
• Telemedicine monitoring is usually used to evaluate_____________ -
✓✓Artificial Pacemaker Functioning
• Ambulatory Monitor -✓✓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) -✓✓Educate patient,
equipment gathered and prepared, electrodes placed on chest, equipment hooked
up
• Procedure for removing -✓✓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 -✓✓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 -✓✓# most common are speed, gain, artifact filter.
also have these controls: LCD display, heart rate limits, standardization, and lead
section
• Speed control -✓✓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 -✓✓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 -✓✓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
