CCT Test STUDY GUIDE Exam Questions
And CORRECT Answers
The heart is divided into _ chambers - CORRECT ANSWER - 4 chambers
Which of the following supplies blood to the arterial system after contraction - CORRECT
ANSWER - Left Ventricle
The sensitivity switch controls the - CORRECT ANSWER - Amplification
The little "spark" that makes the heart beat, originates in the - CORRECT ANSWER - SA
node
Which of the following is a poor conductor of electric current? - CORRECT ANSWER -
Dry skin
Right sided Electrocardiograms (ECGs) - CORRECT ANSWER - to detect right
ventricular STEMI associated with occlusion of the right coronary artery, obtain a right sided ecg
Significance of right sided ecg - CORRECT ANSWER - they are time sensitive, right
sided and posterior ecgs may be useful in identifying STEMI of the right ventricle and/or
posterior wall
populations for right sided ecg - CORRECT ANSWER - adults and geriatric, not sufficient
evidence to recommend this to pediatric
When a 15 lead/ 18 lead machine arent available - CORRECT ANSWER - manipulation of
the leads from a standard 12 lead ecg machine allow additional areas of the heart to be imaged
,Indications of a RV wall infarction may include - CORRECT ANSWER - -ST elevation in
the inferior leads, II, III, aVF
-ST elevation that is greatest in lead III is especially significant
-ST elevation in V1( considered to be the only precordial lead that faces the RV on the standard
12 lead ECG
-Other findings may include; right bundle branch block, second and third degree atrioventricular
block, ST segment elevation in lead V2 50% greater than the magnitude of ST segment
depression in leads aVF
What do you do with the right sided ecg printout - CORRECT ANSWER - label "Right
sided ecg", handwrite it if printout cant, re label v1-v6 to V1R-V6R
Presence of a right ventricular wall infarction is seen when - CORRECT ANSWER - there
is ST elevation greater than 1 mm in V4R
Up to 50% of pts with inferior wall MI may have.. - CORRECT ANSWER - RV infarction
or ischemia
Occlusion of the right coronary artery proximal to the right ventricle branch is associated with.. -
CORRECT ANSWER - inferior wall MI involving the RV
in approximately 10% of the population, the left circumflex artery supplies the right ventricle
and may therefore.. - CORRECT ANSWER - cause an associated lateral wall MI in
conjunction with the RV infarction
pts with coexisting RV infarct have more myocardium involved increasing their rick of
complications up and including.. - CORRECT ANSWER - death
isolated RV infarct is rare, reported to be - CORRECT ANSWER - >3%
,Hypotension results from the RV dysfunction = - CORRECT ANSWER - Patients are
preload dependent, they rely on RV filling pressure to maintain cardiac output, use of
vasodilators should be avoided
when to obtain a posterior ECG - CORRECT ANSWER - to detect posterior STEMI
associated with occlusion of the circumflex artery or dominant right coronary artery
indications of a posterior wall infarction may include - CORRECT ANSWER - -changes in
V1-V3 on standard 12 lead ecg predominantly, which include
-horizontal ST depression
-A tall, wide R wave
-A tall upright T wave
-R?S wave ratio greater than 1
-Inferior or lateral wall MI (especially if accompanied by ST depression or prominent R waves in
leads V1-V3
approximately 15-20% of all myocardial infarctions involve the posterior wall of the ventricle
and when found in conjunction with an inferior or lateral wall MI, it significantly increases
mortality .. - CORRECT ANSWER - up to 11% of all MIs are thought to be isolated
posterior wall MIs
ST elevation >.5mm in leads V8-9 is sensitive for posterior wall infarction - CORRECT
ANSWER - as high as 90% with predictive accuracy up to 93.8%
Due to the distance of the heart (which is more anterior in the chest) - CORRECT
ANSWER - voltage recorded in the posterior leads is often less
coronal plane (frontal plane) - CORRECT ANSWER - vertical division of the body into
front (anterior) and back (posterior) portions
sagittal plane - CORRECT ANSWER - a vertical plane that divides the body into right and
left parts
, axial plane - CORRECT ANSWER - A horizontal flat surface dividing the body into upper
and lower parts; also known as the transverse plane
bipolar standard limb leads (frontal or coronal pane) - CORRECT ANSWER - lead 1=
right arm to left arm
lead 2= right arm to left leg
lead 3= left arm to left leg
Augmented voltage leads - CORRECT ANSWER - Lead AVR to RA
Lead AVL to LA
Lead AVF to LL (foot)
Precordial leads- unipolar- transverse or horizontal plane - CORRECT ANSWER - V1 red
V2 yellow
V3 green
V4 blue
V5 orange
V6 violet
if an impulse travels toward a positive pole it will make a - CORRECT ANSWER -
positive deflection
if an impulse travels away from a positive pole it will make a - CORRECT ANSWER -
negative deflection
Einthovens law - CORRECT ANSWER - lead 1+lead 3 = lead 2
And CORRECT Answers
The heart is divided into _ chambers - CORRECT ANSWER - 4 chambers
Which of the following supplies blood to the arterial system after contraction - CORRECT
ANSWER - Left Ventricle
The sensitivity switch controls the - CORRECT ANSWER - Amplification
The little "spark" that makes the heart beat, originates in the - CORRECT ANSWER - SA
node
Which of the following is a poor conductor of electric current? - CORRECT ANSWER -
Dry skin
Right sided Electrocardiograms (ECGs) - CORRECT ANSWER - to detect right
ventricular STEMI associated with occlusion of the right coronary artery, obtain a right sided ecg
Significance of right sided ecg - CORRECT ANSWER - they are time sensitive, right
sided and posterior ecgs may be useful in identifying STEMI of the right ventricle and/or
posterior wall
populations for right sided ecg - CORRECT ANSWER - adults and geriatric, not sufficient
evidence to recommend this to pediatric
When a 15 lead/ 18 lead machine arent available - CORRECT ANSWER - manipulation of
the leads from a standard 12 lead ecg machine allow additional areas of the heart to be imaged
,Indications of a RV wall infarction may include - CORRECT ANSWER - -ST elevation in
the inferior leads, II, III, aVF
-ST elevation that is greatest in lead III is especially significant
-ST elevation in V1( considered to be the only precordial lead that faces the RV on the standard
12 lead ECG
-Other findings may include; right bundle branch block, second and third degree atrioventricular
block, ST segment elevation in lead V2 50% greater than the magnitude of ST segment
depression in leads aVF
What do you do with the right sided ecg printout - CORRECT ANSWER - label "Right
sided ecg", handwrite it if printout cant, re label v1-v6 to V1R-V6R
Presence of a right ventricular wall infarction is seen when - CORRECT ANSWER - there
is ST elevation greater than 1 mm in V4R
Up to 50% of pts with inferior wall MI may have.. - CORRECT ANSWER - RV infarction
or ischemia
Occlusion of the right coronary artery proximal to the right ventricle branch is associated with.. -
CORRECT ANSWER - inferior wall MI involving the RV
in approximately 10% of the population, the left circumflex artery supplies the right ventricle
and may therefore.. - CORRECT ANSWER - cause an associated lateral wall MI in
conjunction with the RV infarction
pts with coexisting RV infarct have more myocardium involved increasing their rick of
complications up and including.. - CORRECT ANSWER - death
isolated RV infarct is rare, reported to be - CORRECT ANSWER - >3%
,Hypotension results from the RV dysfunction = - CORRECT ANSWER - Patients are
preload dependent, they rely on RV filling pressure to maintain cardiac output, use of
vasodilators should be avoided
when to obtain a posterior ECG - CORRECT ANSWER - to detect posterior STEMI
associated with occlusion of the circumflex artery or dominant right coronary artery
indications of a posterior wall infarction may include - CORRECT ANSWER - -changes in
V1-V3 on standard 12 lead ecg predominantly, which include
-horizontal ST depression
-A tall, wide R wave
-A tall upright T wave
-R?S wave ratio greater than 1
-Inferior or lateral wall MI (especially if accompanied by ST depression or prominent R waves in
leads V1-V3
approximately 15-20% of all myocardial infarctions involve the posterior wall of the ventricle
and when found in conjunction with an inferior or lateral wall MI, it significantly increases
mortality .. - CORRECT ANSWER - up to 11% of all MIs are thought to be isolated
posterior wall MIs
ST elevation >.5mm in leads V8-9 is sensitive for posterior wall infarction - CORRECT
ANSWER - as high as 90% with predictive accuracy up to 93.8%
Due to the distance of the heart (which is more anterior in the chest) - CORRECT
ANSWER - voltage recorded in the posterior leads is often less
coronal plane (frontal plane) - CORRECT ANSWER - vertical division of the body into
front (anterior) and back (posterior) portions
sagittal plane - CORRECT ANSWER - a vertical plane that divides the body into right and
left parts
, axial plane - CORRECT ANSWER - A horizontal flat surface dividing the body into upper
and lower parts; also known as the transverse plane
bipolar standard limb leads (frontal or coronal pane) - CORRECT ANSWER - lead 1=
right arm to left arm
lead 2= right arm to left leg
lead 3= left arm to left leg
Augmented voltage leads - CORRECT ANSWER - Lead AVR to RA
Lead AVL to LA
Lead AVF to LL (foot)
Precordial leads- unipolar- transverse or horizontal plane - CORRECT ANSWER - V1 red
V2 yellow
V3 green
V4 blue
V5 orange
V6 violet
if an impulse travels toward a positive pole it will make a - CORRECT ANSWER -
positive deflection
if an impulse travels away from a positive pole it will make a - CORRECT ANSWER -
negative deflection
Einthovens law - CORRECT ANSWER - lead 1+lead 3 = lead 2
