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The Heart Flashcards

1
Q

Where is the SA node located?

A

At the juncture of the superior vena cava and the right atrium

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2
Q

What occurs to the impulse once it gets to the AV node?

A

It is slowed before being transmitted to the bundle of his and parking fibers

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3
Q

How od cardiac impulses spread?

A

From endocardium to epicardium

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4
Q

At what level does the SNS enter for cardiac innervation?

A

T1-T5

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5
Q

What cranial nerve innervated the heart causing PSNS responses?

A

Vagus nerve

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6
Q

What chamber of the heart is most anterior?

A

Right ventricle

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7
Q

What is left ventricular apex called and where is it located?

A

Point of Maximal Impulse (PMI) fifth intercostal space midclavicular line

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8
Q

What are the only normal sounds that should be heard when auscultating the heart?

A

Only the closing of the heart valves

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9
Q

What produces the first heart sound (S1)?

A

Closing of the AV valves
Tricuspid
Mitral

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10
Q

What produces the second heart sound (S2)?

A

Closing of the semilunar valves
Aortic
Pulmonic

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11
Q

When can opening valves be heard?

A

When they are damaged

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12
Q

When is an opening snap heard versus an ejection click?

A

AV valve = opening snap

Semilunar valve = ejection click

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13
Q

What is the time between the closure of the AV valves and the opening of the semilunar valves?

A

Isovolumic contraction

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14
Q

What is the time between the opening and the closing of the semilunar valves?

A

The systolic period of ejection

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15
Q

What is the S2 heart sound split into?

A

A2

P2

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16
Q

What is the time between the closure of the semilunar valves and the opening of the AV valves?

A

Isovolumic relaxation

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17
Q

When does rapid filling of the ventricle occur?

A

When the AV valves open, 80% filling occurs at this point

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18
Q

When is S3 heard if present?

A

After S2 (Kentucky)

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19
Q

What population is S3 heart sound normal?

A

Children and young adults

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20
Q

What can a S3 heart sound indicate in adults greater than the age of 30?

A

Volume overload to the ventricles
Valvular regurgitation
CHF

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21
Q

When might a S4 heart sound be heard?

A

Prior to S1 (Tennessee)

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22
Q

What populations might a S4 heart sound be considered a normal finding?

A

Children and young adults

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23
Q

If a S4 heart sound is heard in an individual over the age of 30 what pathology is suspected?

A

It is indicative of a noncompliant or stiff ventricle

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24
Q

Where is S1 heard the best?

A

At the apex of the heart

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25
Where might splitting of S1 be heard?
The tricuspid areas
26
Where is S2 heard the best?
At the base of the heart
27
How does inspiration affect the distance between A2 and P2?
The split is widened during inspiration
28
What does the dicrotic notch represent?
The closure of the aortic valve
29
What measures the lateral pressure exerted by a column of blood against the arterial wall?
Arterial blood pressure
30
What determines blood pressure?
The volume ejected Distensibility Viscosity of blood Pressure in vessels after last ejection
31
In a healthy adult, which extremity is BP higher?
SPB in legs is 15-20mmHg greater than in the arms
32
What is the difference between the systolic pressure and the diastolic pressure?
The pulse pressure
33
How much is a normal pulse pressure?
There is normally a 10mmHg decrease in SBP during quiet inspiration
34
What is the most common cause of right sided heart failure?
Left sided heart failure
35
What causes angina?
Consequence of hypoxia of the myocardium resulting from an imbalance of coronary supply and myocardial demand
36
What are four types of syncope?
Postural Vasovagal Carotid sinus Posttussive
37
What is xanthomata and what pathology is it indicative of?
Stony hard slightly yellowish masses, hypercholesterolemia
38
What is Lichtstein's sign and what pathology is indicated?
Ear lobe creases seen in patients with CAD/CHF
39
What is considered normal BP?
Systolic: less than 120 Diastolic: less than 80
40
What is considered preHTN BP?
Systolic: 120-139 Diastolic: 80-89
41
What is considered stage one HTN?
Systolic: 140-159 Diastolic: 90-99
42
What is considered stage 2 HTN?
Systolic: greater than 160 Diastolic: greater than 100
43
How can jugular venous pressure be estimated?
Adding 5cmH2O to the amount calculated above the sternal angle Measure 3cmH2O + 5 = 8cmH2O estimated JVP
44
Where is the cardiac rate typically assessed?
Radial pulse
45
What sound is typically heard before the carotid pulse is felt?
S1
46
Typically what is the size of the PMI?
2-3cm in diameter
47
When might a thrill be felt?
Indicates a large murmur is present
48
What heart sounds are heard better with the diaphragm of the stethoscope?
High pitched sounds such as: Valve closure Systolic events Regurgitant murmurs
49
What sounds are typically heard better with the bell of the stethoscope?
Low pitched sounds such as: Gallop rhythms Murmur AV stenosis
50
What are the five auscultatory areas of the heart?
``` Aortic Pulmonic Erb's point Tricuspid Mitral ```
51
Where is the aortic heart sound located?
Right side, second intercostal space, at the sternal border
52
Where is the pulmonic heart sound located?
Left side, second intercostal space, at the sternal border
53
Where is Erb's point located?
Left side, third intercostal space, sternal border
54
Where is the tricuspid heart sound located?
Left side, fourth intercostal space, sternal border
55
Where is the mitral heart sound located?
Left side, fifth intercostal space mid-clavicular line
56
When is splitting of S2 beast heard?
During inspiration at the pulmonic area
57
At what grade murmur does a thrill become apparent?
Grade IV
58
What would make the mitral component of S1 louder?
A faster rate of rise of left ventricular pressure and increased contractility
59
What would make S1 as a whole louder?
Stiffened AV valves
60
What would increase the intensity of S2?
Increased SBP
61
How does fibrosis affect AV valves versus semilunar valves?
Semilunar valves are morphologically different fibrosis does not cause an increase in intensity as in closure of the AV valve

Advanced Health Assessment (7 decks)

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