Flashcards in Ch 14 questions Deck (79)
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_______ allows a cardiac muscle cell to contract spontaneously without a stimulus from a nerve source.
Automaticity
1
The aorta receives its blood supply from the:
Left ventricle
2
Blood enters the right atrium from the body through the:
Vena cava
3
The only vein(s) in the body that carry oxygenated blood is/are the:
Pulmonary veins
4
Normal electrical impulses originate in the sinus node, just above the:
Atria
5
Dilation of the coronary arteries________ blood flow.
Increases
6
The ________ are tiny blood vessels that are approximately one cell thick.
Capillaries
7
_______ carry oxygen to the body's tissues and then remove carbon dioxide.
Red blood cells
8
_______ is the maximum pressure exerted by the left ventricle as it contracts.
Systolic blood pressure
9
Atherosclerosis can lead to a complete _______ of a coronary artery.
Occlusion
10
The lumen of an artery may be partially or completely blocked by the blood-clotting system due to a ________ that exposes the inside of the atherosclerotic wall.
Crack
11
Tissues downstream from a blood clot will suffer from a lack of oxygen. If blood is resumed in a short time, the ________ tissues will recover.
Ischemic
12
Risk factors for myocardial infarction include all of the following EXCEPT:
Increased activity level
13
When, for a brief period of time, heart tissues do not get enough oxygen, the pain is called:
Angina
14
Angina pain may be felt in the:
Epigastrium
15
The underlying cause of a dissecting aortic aneurysm is:
Uncontrolled hypertension
16
Because the oxygen supply to the heart is diminished with angina, the __________ can become compromised, putting the person at risk for significant cardiac rhythm problems.
Electrical system
17
About ________ minutes after blood flow is cut off, some heart muscle cells begin to die.
30
18
An acute myocardial infarction is more likely to occur in the larger, thick-walled left ventricle, which needs more ________ than the right ventricle.
Blood and oxygen
19
Which of the following statements regarding CHF is FALSE?
Stridor is a common lung sound heard on exam
20
Cardiogenic shock can occur within 24 hours of a(n):
Acute myocardial infarction
21
Sudden death is usually the result of __________, in which the heart fails to generate an effective blood flow.
Cardiac arrest
22
Disorganized, ineffective quivering of the ventricles is known as:
Ventricular fibrillation
23
Which of the following is NOT a cause of congestive heart failure?
Chronic hypotension
24
Signs and symptoms of shock include all of the following EXCEPT:
Elevated blood pressure
25
Which of the following changes in heart function occur in patients with CHF?
Enlargement of the left ventricle
26
Physical findings of AMI include skin that is _________ because of poor cardiac output and the loss of percussion.
Gray
27
All patient assessments begin by determining whether the patient:
Is responsive
28
To assess chest pain, use the mnemonic:
OPQRST
29
