AH INTEGRATION EXAM 2
(CARDIAC)
1. what is the order of the cardiac conduction system?: SA node AV node
bundle of his purkinje
fibers
2. what part of the cardiac conduction system is the hearts primary pacemak- er, it can spontaneously and
rhythmically generate electrical impulse at a rate of 60-100 bpm and therefore has the greatest degree of
automaticity, and it is the P wave on an EKG?: SA node
3. what part of the cardiac conduction system is otherwise known as atrial kick and contributes additional blood
volume for a greater cardiac output, it fires at 40-60 bpm, it is a slow conduction that provides a short delay
allowing the atria to contract and the ventricles to fill, it is reflected in the PR segment on the EKG, and
transitional cells cause impulses to slow down or be delayed in this node before proceeding to the ventricles?: AV
junction
4. what does a P wave a?: atrial depolarization
5. what part of the cardiac conduction system has to do with right and left bundle branch system and
depolarization conducts rapidly to myocytes of ventricles?: bundle of his
6. what part of the cardiac conduction system has to do with terminate in tiny filaments that directly depolarize
the ventricular myocytes, it is QRS on the ekg, and it fires at 20-40 bpm?: purkinje fibers
7. what structure of the heart is the dominant pacemaker, initiates depolariza- tion, stimulates both atria to
contract, is a P wave on EKG, and is located on the upper posterior wall of the right atrium?: SA node
8. what structure of the heart slows depolarization and allows blood to flow through valves into ventricles and it
is located just above the tricuspid valve?-
: AV node
9. what structure of the heart is depolarization conducts rapidly to myocytes of ventricles and it penetrates AV
valves and bifurcates to LBB and RBB?: bundle of his
10.what structure of the heart is located by the interventricular septum?: bun- dle branches
11.what structure of the heart carry depolarization away from the AV node and rapidly depolarize ventricular
myocytes, it is the QRS on the EKG, and it is located in terminates in tiny filaments that directly depolarize the
ventricular myocytes?: purkinje fibers
12.what is this an example of?: the hearts electrical system
, AH INTEGRATION EXAM 2
(CARDIAC)
13. what is this an example of?: EKG
14.what provides visual representation of cardiac electrical activity and each event has a distinctive waveform,
the study of which can lead to greater insight into a patients cardiac pathophysiology, the standard one has 12
leads?: EKG
15.what are the bipolar limb leads for an EKG?: I, II, III
16.what are the unipolar limb leads for an EKG?: aVR aVL
aVF
17.what are the chest leads (precordial leads) that look across t are unipolar?: V1, V2, V3, he heart and
V4, V5, V6
18.what leads are the hexxaxial leads that look at the heart from top down and right to left?: limb leads
I, II, III, aVR, aVL, aVF
19.what are the lateral EKG leads?: I, AVL, V5, V6
20.what are the inferior EKG leads?: II, III, AVF
21.what are the septal EKG leads?: V1, V2
22.what are the anterior wall of left ventricle EKG leads?: V3, V4
23.what are leads V3 and V4 for?: anterior wall of left ventricle
24.what are leads V1 and V2 for?: septal
25.what are leads II, III, and AVF for?: inferior
26.what are leads I, AVL, V5, and V6 for?: lateral
27.what is this an example of?: lead placement for EKG
, AH INTEGRATION EXAM 2
(CARDIAC)
28.what type of pathology can we study from EKGs?: · Arrhythmias
· Myocardial ischemia and infarction
· Pericarditis
, AH INTEGRATION EXAM 2
(CARDIAC)
· Chamber hypertrophy
· Electrolyte disturbances (i.e. hyperkalemia, hypokalemia)
· Drug toxicity (i.e. digoxin and drugs which prolong the QT interval)
29.what is this an example of:
· Overall impression
· Calibration
· Rate/rhythm
· R wave progression
· Axis
· Bundle branches/fascicular blocks
· Hypertrophy
· Infarction?: method for interpreting EKGs
30.what does a P wave in lead I on an EKG mean?: good placement
31.what is this an example of?: SVT
32.what is this an example of?: 3rd degree heart block
33.what is when you count the number of R waves in a 6 second strip and multiply it by 10 to get the
approximate rate per minute on an EKG?: 6 second strip method
34.how many large EKG boxes make up 6 seconds?: 30 large boxes
35.what is when you take the number of "big boxes" between neighboring QRS complexes and divide this
into 300 and the result will be approximate- ly equal to the rate, and although fast this method only works for
regular rhythms?: rule of 300
36.are P waves normally upright in lead II and uniform in appearance and after every P wave there is a QRS?:
yes
(CARDIAC)
1. what is the order of the cardiac conduction system?: SA node AV node
bundle of his purkinje
fibers
2. what part of the cardiac conduction system is the hearts primary pacemak- er, it can spontaneously and
rhythmically generate electrical impulse at a rate of 60-100 bpm and therefore has the greatest degree of
automaticity, and it is the P wave on an EKG?: SA node
3. what part of the cardiac conduction system is otherwise known as atrial kick and contributes additional blood
volume for a greater cardiac output, it fires at 40-60 bpm, it is a slow conduction that provides a short delay
allowing the atria to contract and the ventricles to fill, it is reflected in the PR segment on the EKG, and
transitional cells cause impulses to slow down or be delayed in this node before proceeding to the ventricles?: AV
junction
4. what does a P wave a?: atrial depolarization
5. what part of the cardiac conduction system has to do with right and left bundle branch system and
depolarization conducts rapidly to myocytes of ventricles?: bundle of his
6. what part of the cardiac conduction system has to do with terminate in tiny filaments that directly depolarize
the ventricular myocytes, it is QRS on the ekg, and it fires at 20-40 bpm?: purkinje fibers
7. what structure of the heart is the dominant pacemaker, initiates depolariza- tion, stimulates both atria to
contract, is a P wave on EKG, and is located on the upper posterior wall of the right atrium?: SA node
8. what structure of the heart slows depolarization and allows blood to flow through valves into ventricles and it
is located just above the tricuspid valve?-
: AV node
9. what structure of the heart is depolarization conducts rapidly to myocytes of ventricles and it penetrates AV
valves and bifurcates to LBB and RBB?: bundle of his
10.what structure of the heart is located by the interventricular septum?: bun- dle branches
11.what structure of the heart carry depolarization away from the AV node and rapidly depolarize ventricular
myocytes, it is the QRS on the EKG, and it is located in terminates in tiny filaments that directly depolarize the
ventricular myocytes?: purkinje fibers
12.what is this an example of?: the hearts electrical system
, AH INTEGRATION EXAM 2
(CARDIAC)
13. what is this an example of?: EKG
14.what provides visual representation of cardiac electrical activity and each event has a distinctive waveform,
the study of which can lead to greater insight into a patients cardiac pathophysiology, the standard one has 12
leads?: EKG
15.what are the bipolar limb leads for an EKG?: I, II, III
16.what are the unipolar limb leads for an EKG?: aVR aVL
aVF
17.what are the chest leads (precordial leads) that look across t are unipolar?: V1, V2, V3, he heart and
V4, V5, V6
18.what leads are the hexxaxial leads that look at the heart from top down and right to left?: limb leads
I, II, III, aVR, aVL, aVF
19.what are the lateral EKG leads?: I, AVL, V5, V6
20.what are the inferior EKG leads?: II, III, AVF
21.what are the septal EKG leads?: V1, V2
22.what are the anterior wall of left ventricle EKG leads?: V3, V4
23.what are leads V3 and V4 for?: anterior wall of left ventricle
24.what are leads V1 and V2 for?: septal
25.what are leads II, III, and AVF for?: inferior
26.what are leads I, AVL, V5, and V6 for?: lateral
27.what is this an example of?: lead placement for EKG
, AH INTEGRATION EXAM 2
(CARDIAC)
28.what type of pathology can we study from EKGs?: · Arrhythmias
· Myocardial ischemia and infarction
· Pericarditis
, AH INTEGRATION EXAM 2
(CARDIAC)
· Chamber hypertrophy
· Electrolyte disturbances (i.e. hyperkalemia, hypokalemia)
· Drug toxicity (i.e. digoxin and drugs which prolong the QT interval)
29.what is this an example of:
· Overall impression
· Calibration
· Rate/rhythm
· R wave progression
· Axis
· Bundle branches/fascicular blocks
· Hypertrophy
· Infarction?: method for interpreting EKGs
30.what does a P wave in lead I on an EKG mean?: good placement
31.what is this an example of?: SVT
32.what is this an example of?: 3rd degree heart block
33.what is when you count the number of R waves in a 6 second strip and multiply it by 10 to get the
approximate rate per minute on an EKG?: 6 second strip method
34.how many large EKG boxes make up 6 seconds?: 30 large boxes
35.what is when you take the number of "big boxes" between neighboring QRS complexes and divide this
into 300 and the result will be approximate- ly equal to the rate, and although fast this method only works for
regular rhythms?: rule of 300
36.are P waves normally upright in lead II and uniform in appearance and after every P wave there is a QRS?:
yes
