CRAT COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS VERIFIED SOLUTIONS
Question:
Transtelephonic Monitoring
Answer:
Transmitted over phone to a LICENSED practitioner to read (magnetic tape), Patients use up to 30
days
Question:
Digital Monitoring
Answer:
Transmitted over a computer where report is verified by a licensed practitioner
Question:
Telemedicine monitoring is usually used to evaluate_____________
Answer:
Artificial Pacemaker Functioning
Question:
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
Question:
,Procedure for applying ambulatory monitor (holter)
Answer:
Educate patient, equipment gathered and prepared, electrodes placed on chest, equipment hooked up
Question:
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
Question:
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.
Question:
ECG machine controls
Answer:
# most common are speed, gain, artifact filter. also have these controls: LCD display, heart rate
limits, standardization, and lead section
Question:
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
Question:
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
Question:
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
Question:
3 most common causes of artifact are:
Answer:
Somatic tremor, wandering baseline, and AC interference
Question:
History of ECG
Answer:
1903-Wilhelm Einthoven
Question:
Transtelephonic Monitoring
Answer:
Transmitted over phone to a LICENSED practitioner to read (magnetic tape), Patients use up to 30
days
Question:
Digital Monitoring
Answer:
Transmitted over a computer where report is verified by a licensed practitioner
Question:
Telemedicine monitoring is usually used to evaluate_____________
Answer:
Artificial Pacemaker Functioning
Question:
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
Question:
,Procedure for applying ambulatory monitor (holter)
Answer:
Educate patient, equipment gathered and prepared, electrodes placed on chest, equipment hooked up
Question:
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
Question:
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.
Question:
ECG machine controls
Answer:
# most common are speed, gain, artifact filter. also have these controls: LCD display, heart rate
limits, standardization, and lead section
Question:
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
Question:
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
Question:
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
Question:
3 most common causes of artifact are:
Answer:
Somatic tremor, wandering baseline, and AC interference
Question:
History of ECG
Answer:
1903-Wilhelm Einthoven
