Quiz #EKG Review

Question 0

The chief chemical neurotransmitter for the sympathetic nervous system is

Answer 0

Acetylcholine

Question 1

The pulmonic and aortic valves are open during systole or diastole?

Answer 1

Systole

Question 2

Unstable angina and acute myocardial infarction are indistinguishable in the first few hours

T/F

Answer 2

True

Question 3

ST segment elevation is a primary indicator of

Answer 3

Myocardial injury

Question 4

There are ___ primary coronary arteries

Answer 4

3

Question 5

Patients experiencing an acute myocardial infarction will always complain of chest pain.

T/F

Answer 5

False

Question 6

Cardiac output is a factor of

Answer 6

Cardiac rate and stroke volume

Question 7

Generally, anterior MIs tend to involve a larger muscle mass than inferior MIs

T/F

Answer 7

True

Question 8

The ______ of the heart is considered to be the “workhorse of the heart”

Answer 8

Left ventricle

Question 9

The inner most layer of the arteriolar wall is called?

Answer 9

Tunica intima

Question 10

Q wave infarcts are associated with higher incidence of acute mortality, increased tissue damage, and the development of CHF

T/F

Answer 10

True

Question 11

The period when repolarization is almost complete and the cardiac cells can be stimulated to contract prematurely (if the stimulus is stronger than normal) is know as the?

Answer 11

Relative refractory period

Question 12

Chest pain should be considered cardiac in origin and managed accordingly until proven otherwise.

T/F

Answer 12

True

Question 13

Because of its size and the large amount of myocardium that it supplies, massive infarction may result if the ____ becomes totally occluded

Answer 13

LAD

Question 14

Pathologic keyways are not an early indicator of EKG findings, but occur as later evidence of myocardial tissue damage.

T/F

Answer 14

True

Question 15

The paper on the EKG normally moves at____

Answer 15

25mm/sec

Question 16

Therapeutic and prognostic implications of lateral MIs will be primarily based on the.

Answer 16

Clinical picture of your patient

Question 17

The precordial leads electrically cut the heart sagittally into a top half and a bottom half.

T/F

Answer 17

False

Question 18

Myocardial infarction or myocardial ischemia may be produced by.

Answer 18

All of the above
Sudden increase in myocardial workload
Spasms of the coronary arteries
Coronary artery occlusion

Question 19

The point at which the QRS complex meets the ST segment is known as the

Answer 19

J point

Question 20

Initiating events of ACH or acute coronary syndrome include

Answer 20

Plaque rupture, thrombus formation, and vasoconstriction

Question 21

ST segment depression indicates

Answer 21

Myocardial ischemia

Question 22

Most cardiac dysrhythmias are caused by ischemia secondary to hypoxia, therefore the most appropriate drug to give to a patient with any dysrhythmia is

Answer 22

Oxygen

Question 23

If your patient is hypotensive and is exhibiting EKG changes consistent with an inferior myocardial infarction, you should consider the possibility of

Answer 23

Right ventricular infarct

Question 24

The primary goal of management of the patient with symptomatic chest pain is to

Answer 24

Interrupt the infarction process

Question 25

If ST segment elevation is noted in the lower limb leads II, III, AVF. This finding is indicative of

Answer 25

Inferior MI

Question 26

Signs and symptoms the healthcare provider may expect to observe in a patient with necrotic heart tissue can include

Answer 26

All of the above
Dysrhythmias
Congestive heart failure
Cardiogenic shock

Question 27

Generally, a MI that involves the interventricular septum will also involve the

Answer 27

Left ventricle of the heart

Question 28

Leads V3 and V4 visualize the

Answer 28

Anterior wall for the hearts left ventricle

Question 29

Electrical conduction system dysrhythmias are a common occurrence in patients with septal MIs

T/F

Answer 29

True

Question 30

Due to the large degree of myocardial muscle involvement, ____ MI’s have a greater predisposition for the development of complications such as lethal ventricular dysrhythmias and cardiogenic shock

Answer 30

Anterior

Question 31

Leads ___ and ___ visualize the inner ventricular septum of the heart

Answer 31

V1 and V2

Question 32

Leads ____,____,____,____ visualize the lateral wall of the heart

Answer 32

V5, V6, I, AVL

Question 33

Q waves are considered significant if they are as wide as or wider than

Answer 33

.04 sec