REVIEW FOR CET PRACTICE TEST
QUESTIONS COMPLETE WITH
VERIFIED ANSWERS
\.0.04 sec - ANSWERS✔-Small boxes on grid - horizontal
\.1mm - ANSWERS✔-Small boxes on grid- vertical
\.25mm/sec - ANSWERS✔-Normal paper speed
\.U waves - ANSWERS✔-Normal, large ________ indicate decreased potassium
\.Sinus rhythm - ANSWERS✔--P wave upright and rounded and before every QRS
-narrow QRS < 0.12 sec,
-rate: 60-100
-PR interval - 0.12 to 0.20 sec
\.Somatic tremors - ANSWERS✔-Can be caused by muscle movement/seizures
\.Wandering baseline - ANSWERS✔-This almost always represents the patient's
respiration, but can also be caused by movement, dirty leads/electrodes and loose
, electrodes. An easy way to eliminate this is to move limb leads to wrists and
ankles.
\.60 cycle interference - ANSWERS✔-Electric interference caused by cell
phones/non-grounded appliances/frayed wire making the baseline of the ECG
appear wavy, bumpy, or tremulous; Dry electrodes may also cause this problem
because of poor contact
\.lead III - ANSWERS✔-What Lead is created between left arm and left leg?
\.Einthoven's triangle - ANSWERS✔-
\.Holter monitoring - ANSWERS✔-Records EKG over 24 hours, using 5 leads; wear
loose fitting clothes to reduce artifact, patient presses "event" button if they
experience spontaneous symptoms, should carry on normal activities but record
exercise, can't get wet, only technician can replace loose leads, tobacco products
can be used up to 2 to 3 hours prior to the exam; erectile dysfunction
drugs/caffeine products should be avoided for 24 hr. before the test
\.Stress Test - ANSWERS✔-Checks the patient's radial pulse; must check BP every 3
minutes; If patient is hyperventilating, check respiratory rate. Stop test when
patient reaches target HR or if symptomatic. (Uses 12 lead, but RL & LL on torso to
min movement)
\.Sinus arrhythmia - ANSWERS✔-Varying R-R intervals, usually with respirations
(common in children)
QUESTIONS COMPLETE WITH
VERIFIED ANSWERS
\.0.04 sec - ANSWERS✔-Small boxes on grid - horizontal
\.1mm - ANSWERS✔-Small boxes on grid- vertical
\.25mm/sec - ANSWERS✔-Normal paper speed
\.U waves - ANSWERS✔-Normal, large ________ indicate decreased potassium
\.Sinus rhythm - ANSWERS✔--P wave upright and rounded and before every QRS
-narrow QRS < 0.12 sec,
-rate: 60-100
-PR interval - 0.12 to 0.20 sec
\.Somatic tremors - ANSWERS✔-Can be caused by muscle movement/seizures
\.Wandering baseline - ANSWERS✔-This almost always represents the patient's
respiration, but can also be caused by movement, dirty leads/electrodes and loose
, electrodes. An easy way to eliminate this is to move limb leads to wrists and
ankles.
\.60 cycle interference - ANSWERS✔-Electric interference caused by cell
phones/non-grounded appliances/frayed wire making the baseline of the ECG
appear wavy, bumpy, or tremulous; Dry electrodes may also cause this problem
because of poor contact
\.lead III - ANSWERS✔-What Lead is created between left arm and left leg?
\.Einthoven's triangle - ANSWERS✔-
\.Holter monitoring - ANSWERS✔-Records EKG over 24 hours, using 5 leads; wear
loose fitting clothes to reduce artifact, patient presses "event" button if they
experience spontaneous symptoms, should carry on normal activities but record
exercise, can't get wet, only technician can replace loose leads, tobacco products
can be used up to 2 to 3 hours prior to the exam; erectile dysfunction
drugs/caffeine products should be avoided for 24 hr. before the test
\.Stress Test - ANSWERS✔-Checks the patient's radial pulse; must check BP every 3
minutes; If patient is hyperventilating, check respiratory rate. Stop test when
patient reaches target HR or if symptomatic. (Uses 12 lead, but RL & LL on torso to
min movement)
\.Sinus arrhythmia - ANSWERS✔-Varying R-R intervals, usually with respirations
(common in children)
