Cardiology- Basics

Question 1

Lateral wall leads

Answer 1

Lead I and aVL; V5 and V6

Question 2

I and avL show

Answer 2

left side of the heart in a vertical plane (lateral wall)

Question 3

Circumflex artery feeds

Answer 3

I, avL, v5, v6

Question 4

Inferior wall leads

Answer 4

II, III, AVF

Question 5

Right coronary artery feeds

Answer 5

V3, V4, II, III, AVF

Question 6

Septal wall leads include

Answer 6

V1, V2

Question 7

Left anterior descending artery feeds

Answer 7

V1, V2

Question 8

Leads V1 and V2 view the

Answer 8

inter ventricular septum of the left ventricle

Question 9

Leads V3 and V4 view the

Answer 9

anterior wall of the left ventricle

Question 10

Leads V5 and V6 view the

Answer 10

low lateral wall of the left ventricle

Question 11

Leads I and aVL view the

Answer 11

high lateral wall of the left ventricle

Question 12

Leads II, III, and aVF view the

Answer 12

inferior wall of the left ventricle

Question 13

Lead V4R views the

Answer 13

right ventricle

Question 14

myocardial ischemia manifests itself as

Answer 14

ST segment depression and/or T-wave inversion

Question 15

myocardial injury manifests with

Answer 15

ST segment elevation ≥ 1 mm in 2 or more contiguous leads

Question 16

how does atropine work?

Answer 16

opposes the vagus nerve; used as a parasympathetic blocker to increase the HR in symptomatic bradycardia

Question 17

treat hemodynamically unstable bradycardia

Answer 17

transcutaneous pacing

Question 18

morphine sulfate therapeutic effects

Answer 18

increased venous capacitance and decreased preload

Question 19

aspirin works by

Answer 19

blocking the formation of thromboxane a3, inhibiting platelet aggregation

Question 20

the interventricular septum and anterior wall of the left ventricle is viewed through leads

Answer 20

V1 through V4

Question 21

s/s of an acute ischemic stroke involving the left cerebral hemisphere?

Answer 21

Dysarthria, confusion, right side hemiparesis, left side facial droop

Question 22

What is the correct initial dose and rate of administration of amiodarone for a patient with refractory ventricular fibrillation?

Answer 22

300 mg via rapid IV or IO push

Question 23

A 49-year-old male complains of generalized weakness that began about a week ago. He is conscious and alert and is breathing adequately. His blood pressure is 138/78 mm Hg, pulse is 130 beats/min and irregular, and respirations are 14 breaths/min. You administer supplemental oxygen and apply the cardiac monitor, which reveals atrial fibrillation; a 12-lead ECG tracing reveals the same. The patient denies any significant medical problems and takes no medications. After establishing IV access, you should:

Answer 23

Administer 0.25 mg/kg of diltiazem and transport for evaluation.

Question 24

Atrial systole =

Answer 24

Depolarization; tricuspid and bicuspid valves

Question 25

Ventricular diastole

Answer 25

Coronary arteries

Question 26

Ventricular systole

Answer 26

Pulmonary and aortic semilunar valve

Question 27

Paroxysmal nocturnal dyspnea

Answer 27

Decreased stroke volume with left heart failure

Question 28

Most suggestive of right-sided heart failure

Answer 28

Engorged jugular veins

Question 29

Symptomatic bradycardia

Answer 29

Administer atropine and consider TCP

Question 30

Ventricular ejection fraction

Answer 30

Percentage of blood in the ventricle pumped out during a contraction

Question 31

Med for clinically stable narrow complex tachycardia and/or wide complex monomorphic tachycardias

Answer 31

Adenosine

Question 32

3ʳᵈ degree HB is treated with

Answer 32

TCP

Question 33

QRS duration of 124 ms; terminal S wave in lead V1 signifies

Answer 33

Left bundle branch block

Question 34

QRS duration of 124 ms; terminal R wave in V1

Answer 34

RBBB