Exam (elaborations)

NUR 524 Exam 2 Questions With Verified Answers.

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Course
NUR 524

Institution
NUR 524

NUR 524 Exam 2 Questions With Verified Answers. Normal PMI? In cardiomegaly? - answerMidclavicular 5th intercostal space In Cardiomegaly displaced to the left What should you tell your patient to do when assessing for carotid bruits? - answerHold breath S1 - answerClosure of AV valves when ven...

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nur 524 exam 2 questions with verified answers

Institution NUR 524
Course NUR 524

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NUR 524 Exam 2 Questions With Verified
Answers.

Normal PMI? In cardiomegaly? - answer✔Midclavicular 5th intercostal space
In Cardiomegaly displaced to the left

What should you tell your patient to do when assessing for carotid bruits? - answer✔Hold breath

S1 - answer✔Closure of AV valves when ventricular pressure exceeds atrial pressures at
beginning of systole
Corresponds with pulse
Best heard at apex

S2 - answer✔Closure of semilunar valves
Normally split because Aortic valve closes before Pulmonic valve
Closure pressure on left is 80mmHg compared to 10 on right
Normal for split to widen during inspiration d/t increased RV filling from negative intrathoracic
pressure

S3 - answer✔Transition from rapid to slow ventricular filling in early diastole. May be normal in
children
Best heard with bell
Can be caused by poor systolic dysfunction or poor myocardial contracility such as CHF

S4 - answer✔Abnormal late diastolic sound caused by forcible atrial contraction in the presence
of decreased ventricular compliance
Best heard with bell (Higher pitch than S3)
Caused by diastolic dysfunction or poor myocardial relaxation (Compliance) such as in recurrent
MI, uncontrolled HTN

Pathologic Wide Split S2 - answer✔Best heard in pulmonic region

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RV volume overload such as ASD, and is usually fixed with no difference in inspiration or
expiration
RV outflow obstruction such as pulmonary stenosis
Delayed RV depolarization such as complete RBBB

Pathologic Narrow Split S2 - answer✔Pulmonary HTN as valve closes earlier d/t high
pulmonary resistance
Mild-moderate aortic stenosis as closure of valve is delayed

Pathologic Single S2 - answer✔May occur if one SL valve is missing (Pulmonary/Aortic atresia
or truncus arteriosus)
If both valves close simulatenously as in Pulmonary HTN with equal pulmonary and aortic
pressures OR in double outlet single ventricle OR in large VSD with equal ventricular pressures

Paradoxical split S2 - answer✔Caused by pulmonary valve closure before aortic valve closure;
Greater with expiration
Occurs in severe aortic stenosis

What are the most common types of degenerative valvular heart disease - answer✔Aortic
stenosis and mitral regurgitation

Intensity Grades of murmurs - answer✔Grade 1: Faintly heard with stethoscope, requires special
attention to hear
grade 2: Soft but readily detectable
Grade 3: Prominent but not loud
Grade 4: Loud with palpable thrill
Grade 5: Very loud
Grade 6: Audible without use of stethoscope

What determines the frequency of a murmur - answer✔Blood flow rates
Lower and slower flow -> Lower pitch
Higher and faster flow -> Higher pitch

Murmur configuration - answer✔Shape of murmur with respect to its audibility
Crescendo, decrescendo, flat, or crescendo-decrescendo

Duration of murmurs - answer✔Length of systole or diastole

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Mid-systolic, holo-diastolic, pan-systolic

Timing of murmurs - answer✔Systolic murmurs begin with or just after S1 and end before or at
S2
Diastolic murmurs begin with or just after S2 and end before or at S1

What do murmurs in the aortic auscultation area indicate - answer✔Pathology of the atria
ventricular or left ventricular outflow tracts
Aortic stenosis, aortic regurgitation, hypertrophic cardiomyopathy

What do murmurs in the pulmonic area indicate - answer✔Tend to be quiet
Pathology of the pulmonic valve such as a PDA.
Further supported if intensity varies with respiration

What do murmurs in Erb's point indicate - answer✔Murmurs in this area are sometimes more
audible if the patient leans forward
Diastolic murmurs of R atrium and many pulmonic and aortic murmurs

What do murmurs in the tricuspid area indicate - answer✔Systolic murmurs indicate pulmonic
stenosis or tricuspid regurgitation
Diastolic murmurs indicate tricuspid stenosis or pulmonic regurgitation

What do murmurs in the mitral/apex area indicate - answer✔Systolic murmurs indicate mitral
regurg, aortic outflow obstruction, or VSD.
Diastolic murmurs indicate mitral stenosis or aortic regurgitation; Mitral stenosis is ONLY heard
at apex and is accompanied by opening snap sound

Aortic Stenosis murmur - answer✔a systolic ejection-type, harsh crescendo-decrescendo murmur
Heard best RSB 2nd intercostal space
Delayed carotid upstroke, narrowed pulse pressure, systolic thrill
ECG findings: LAE, Left axis deviation, LVH

Pulmonary stenosis murmur - answer✔Ejection systolic murmur with variable intensity; Harsh
crescendo-decrescendo
3rd and 4th LIS down left sternal border
Heard best at 2nd ICS LSB; S1 and split S2
Increased with valsalva

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ECG: Right axis deviation, increased P-wave amplitude
XR: Dilated pulmonary trunk or a main pulmonary artery (Congenital)

Mitral Valve Regurgitation murmur - answer✔Pansystolic blowing
Laterally displaced, hyper dynamic apical impulse, brisk carotid upstroke
LVH on ECG and XR
Unchanged with valsalva

Mitral valve prolapse murmur - answer✔Midsystolic to late systolic; Occasionally honking; may
have click and murmur that are intermittent
Lower L sternal border
Common finding with precuts excavated or scoliosis
Valsalva causes click/murmur to move
Min. ECG changes, inverted T waves II, III, aVF

Triuspid regurgitation murmur - answer✔Early systolic, midsystolic, late systolic or pansystolic
Lower left sternal border with radiation to RSB
Sustained precordial lift
Decrease in murmur with valsalva
ECG: RAE, RADe

Hypertrophic cardiomyopathy murmur - answer✔Peaks midsystole
LSB
Murmur decreases with change from standing to squatting and may develop S4 going from
standing to squatting
Murmur increases with valsalva
ECG: LAE, may have LVH

Benign murmurs - answer✔Early systolic crescendo-decrescendo that changes intensity with rate
Location will vary
Murmur disappears with holding breath and valsalva

Aortic regurgitation murmur - answer✔Loud, blowing high-pitched

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