NHA CCMA STANDARD EXAMS ANSWERS AND
QUESTIONS SET A+
✔✔These record electrical potentials in the frontal plane - ✔✔Lead I, Lead II, Lead III
and the chest leads
✔✔On Lead III, which is the positive lead - ✔✔the left leg is positive
✔✔Which limb is always the ground - ✔✔right leg
✔✔Waveform - ✔✔movement away from the isoelectric line either positive or negative
✔✔Interval - ✔✔waveform plus a segment
✔✔Complex - ✔✔Several waveforms
✔✔The normal P wave in standard and precordial leads does not exceed - ✔✔0.11s in
duration or 2.5 mm in height
✔✔The vertical axis on the ekg paper measures - ✔✔Amplitude or voltage
✔✔J (RST) junction - ✔✔point at which QRS complex ends and the ST segment begins
✔✔ST segment - ✔✔from J point to the onset of the T wave
✔✔Normal indication for a stress test - ✔✔Evaluation of a patient withchest pain and a
normal ekg, arrythmia, monitoring a pt, with a recent MI
✔✔The percentage of the target heart rate during a stress test that makes it valid -
✔✔85%
✔✔Hematocrite is made up of - ✔✔hemoglobin x 3
, ✔✔Define hematocrit - ✔✔The percentage by colume of packed red blood cells in a
given sample of blood after centrifugation
✔✔Opposite of anemia - ✔✔polycythemia
✔✔When taking a pharmacologic stress test, it is concluded when - ✔✔85% of the
target rate is achieved
✔✔Drugs used for a pharmacologic stress test - ✔✔adeosine, dipyridamole,
dobutamine
✔✔Ectopic Rythms - ✔✔electrical impulses originating from somewhere else but the SA
node
✔✔Pre-excitation Syndrome - ✔✔Electrical impulses of the heart bypass the normal
pathway and instead go down an accessory shortcut
✔✔Conduction Block - ✔✔electrical impulses go down but encounter blocks and delays
✔✔Indication for temination of a stress test - ✔✔SOB (shortness of breath), chest pain,
dizziness, blood pressure abnormalities
✔✔Ischemia - ✔✔decrease in amount of blood flow
✔✔What is the hallmark of a infarction - ✔✔The presence of abnormal Q waves
✔✔List some cardiac markers - ✔✔Triponin, CK, LDH, SGOT, AST
✔✔What is a negative holter? - ✔✔A negative holter will have no significant arrhythmias
or ST changes
✔✔How long is a holter monitor worn? - ✔✔24 hours or longer
✔✔Why is a holter monitor done? - ✔✔To rule out arrhythmia's or ischemia
✔✔How many electrodes are on a holter monitor - ✔✔5
✔✔A positive holter is one that recorded at least one or more of these abnormalities -
✔✔Tachy or bradycardia, ST segment elevation or depression, pauses
✔✔When is the event monitor used? - ✔✔Only when symptoms occur
QUESTIONS SET A+
✔✔These record electrical potentials in the frontal plane - ✔✔Lead I, Lead II, Lead III
and the chest leads
✔✔On Lead III, which is the positive lead - ✔✔the left leg is positive
✔✔Which limb is always the ground - ✔✔right leg
✔✔Waveform - ✔✔movement away from the isoelectric line either positive or negative
✔✔Interval - ✔✔waveform plus a segment
✔✔Complex - ✔✔Several waveforms
✔✔The normal P wave in standard and precordial leads does not exceed - ✔✔0.11s in
duration or 2.5 mm in height
✔✔The vertical axis on the ekg paper measures - ✔✔Amplitude or voltage
✔✔J (RST) junction - ✔✔point at which QRS complex ends and the ST segment begins
✔✔ST segment - ✔✔from J point to the onset of the T wave
✔✔Normal indication for a stress test - ✔✔Evaluation of a patient withchest pain and a
normal ekg, arrythmia, monitoring a pt, with a recent MI
✔✔The percentage of the target heart rate during a stress test that makes it valid -
✔✔85%
✔✔Hematocrite is made up of - ✔✔hemoglobin x 3
, ✔✔Define hematocrit - ✔✔The percentage by colume of packed red blood cells in a
given sample of blood after centrifugation
✔✔Opposite of anemia - ✔✔polycythemia
✔✔When taking a pharmacologic stress test, it is concluded when - ✔✔85% of the
target rate is achieved
✔✔Drugs used for a pharmacologic stress test - ✔✔adeosine, dipyridamole,
dobutamine
✔✔Ectopic Rythms - ✔✔electrical impulses originating from somewhere else but the SA
node
✔✔Pre-excitation Syndrome - ✔✔Electrical impulses of the heart bypass the normal
pathway and instead go down an accessory shortcut
✔✔Conduction Block - ✔✔electrical impulses go down but encounter blocks and delays
✔✔Indication for temination of a stress test - ✔✔SOB (shortness of breath), chest pain,
dizziness, blood pressure abnormalities
✔✔Ischemia - ✔✔decrease in amount of blood flow
✔✔What is the hallmark of a infarction - ✔✔The presence of abnormal Q waves
✔✔List some cardiac markers - ✔✔Triponin, CK, LDH, SGOT, AST
✔✔What is a negative holter? - ✔✔A negative holter will have no significant arrhythmias
or ST changes
✔✔How long is a holter monitor worn? - ✔✔24 hours or longer
✔✔Why is a holter monitor done? - ✔✔To rule out arrhythmia's or ischemia
✔✔How many electrodes are on a holter monitor - ✔✔5
✔✔A positive holter is one that recorded at least one or more of these abnormalities -
✔✔Tachy or bradycardia, ST segment elevation or depression, pauses
✔✔When is the event monitor used? - ✔✔Only when symptoms occur
