NUR 631 ADVANCED
PATHOPHYSIOLOGY EXAM 3
COMPREHENSIVE QUESTIONS AND
VERIFIED ANSWERS | 100% CORRECT |
GRADE A+ - GCU
1. A patient with left-sided heart failure develops pulmonary edema. What is the primary
Starling force responsible for this fluid shift into the alveoli?
A. Increased interstitial oncotic pressure
B. Decreased capillary oncotic pressure
C. Decreased interstitial hydrostatic pressure
D. Increased capillary hydrostatic pressure
Answer: D
Conceptual Explanation: In left-sided heart failure, the failure of the left ventricle to pump
blood forward causes a backup of pressure into the pulmonary veins and capillaries,
increasing capillary hydrostatic pressure and forcing fluid into the alveoli.
2. Which compensatory mechanism is activated in response to decreased renal perfusion in a
patient with heart failure?
A. Inhibition of the sympathetic nervous system
,B. Activation of the renin-angiotensin-aldosterone system (RAAS)
C. Decreased secretion of antidiuretic hormone (ADH)
D. Increased secretion of atrial natriuretic peptide (ANP)
Answer: B
Conceptual Explanation: Decreased renal perfusion triggers the release of renin, which
leads to the production of Angiotensin II and Aldosterone to increase blood volume and
pressure.
3. A 65-year-old male presents with a crescendo-decrescendo systolic murmur heard best at
the second intercostal space, right sternal border. This is most indicative of:
A. Mitral regurgitation
B. Aortic stenosis
C. Mitral stenosis
D. Aortic regurgitation
Answer: B
Conceptual Explanation: Aortic stenosis typically produces a systolic crescendo-
decrescendo murmur at the right upper sternal border that may radiate to the carotids.
4. Which pathology is characterized by the remodeling of the left ventricle, causing it to
become thin, weak, and enlarged?
A. Hypertrophic cardiomyopathy
, B. Dilated cardiomyopathy
C. Restrictive cardiomyopathy
D. Hypertensive cardiomyopathy
Answer: B
Conceptual Explanation: Dilated cardiomyopathy involves the stretching and thinning of
the ventricular walls, leading to impaired systolic function.
5. In the pathogenesis of atherosclerosis, what is the primary role of ‘foam cells’?
A. They produce nitric oxide to dilate vessels
B. They are macrophages that have ingested oxidized LDL cholesterol
C. They repair damaged endothelial tissue
D. They stimulate the production of HDL cholesterol
Answer: B
Conceptual Explanation: Foam cells are formed when macrophages ingest oxidized LDL
at the site of endothelial injury, contributing to the fatty streak in atherosclerosis.
6. Which type of shock is primarily caused by a massive release of histamine and other
inflammatory mediators?
A. Anaphylactic shock
B. Septic shock
PATHOPHYSIOLOGY EXAM 3
COMPREHENSIVE QUESTIONS AND
VERIFIED ANSWERS | 100% CORRECT |
GRADE A+ - GCU
1. A patient with left-sided heart failure develops pulmonary edema. What is the primary
Starling force responsible for this fluid shift into the alveoli?
A. Increased interstitial oncotic pressure
B. Decreased capillary oncotic pressure
C. Decreased interstitial hydrostatic pressure
D. Increased capillary hydrostatic pressure
Answer: D
Conceptual Explanation: In left-sided heart failure, the failure of the left ventricle to pump
blood forward causes a backup of pressure into the pulmonary veins and capillaries,
increasing capillary hydrostatic pressure and forcing fluid into the alveoli.
2. Which compensatory mechanism is activated in response to decreased renal perfusion in a
patient with heart failure?
A. Inhibition of the sympathetic nervous system
,B. Activation of the renin-angiotensin-aldosterone system (RAAS)
C. Decreased secretion of antidiuretic hormone (ADH)
D. Increased secretion of atrial natriuretic peptide (ANP)
Answer: B
Conceptual Explanation: Decreased renal perfusion triggers the release of renin, which
leads to the production of Angiotensin II and Aldosterone to increase blood volume and
pressure.
3. A 65-year-old male presents with a crescendo-decrescendo systolic murmur heard best at
the second intercostal space, right sternal border. This is most indicative of:
A. Mitral regurgitation
B. Aortic stenosis
C. Mitral stenosis
D. Aortic regurgitation
Answer: B
Conceptual Explanation: Aortic stenosis typically produces a systolic crescendo-
decrescendo murmur at the right upper sternal border that may radiate to the carotids.
4. Which pathology is characterized by the remodeling of the left ventricle, causing it to
become thin, weak, and enlarged?
A. Hypertrophic cardiomyopathy
, B. Dilated cardiomyopathy
C. Restrictive cardiomyopathy
D. Hypertensive cardiomyopathy
Answer: B
Conceptual Explanation: Dilated cardiomyopathy involves the stretching and thinning of
the ventricular walls, leading to impaired systolic function.
5. In the pathogenesis of atherosclerosis, what is the primary role of ‘foam cells’?
A. They produce nitric oxide to dilate vessels
B. They are macrophages that have ingested oxidized LDL cholesterol
C. They repair damaged endothelial tissue
D. They stimulate the production of HDL cholesterol
Answer: B
Conceptual Explanation: Foam cells are formed when macrophages ingest oxidized LDL
at the site of endothelial injury, contributing to the fatty streak in atherosclerosis.
6. Which type of shock is primarily caused by a massive release of histamine and other
inflammatory mediators?
A. Anaphylactic shock
B. Septic shock
