MARYVILLE PATHO NURS 611 EXAM 3 PRACTICE QUESTIONS 2026/2027
AND A NEW UPDATED STUDY GUIDE COMPLETE ACCURATE EXAM REAL
QUESTIONS WITH WELL ELABORATED ANSWERS
1. A 58-year-old patient with a long history of poorly controlled hypertension
develops progressive exertional dyspnea, orthopnea, and an S3 heart
sound. Echocardiography demonstrates a reduced left ventricular ejection
fraction. Which pathophysiologic mechanism most directly explains the
development of this patient's heart failure?
A. Chronic pressure and volume overload causing ventricular remodeling
and impaired contractility
B. Increased pulmonary venous compliance causing reduced ventricular
filling
C. Decreased sympathetic activity causing persistent systemic vasodilation
D. Isolated right ventricular dilation without impairment of left ventricular
function
Answer: A
2. A patient with chronic hypertension develops concentric left ventricular
hypertrophy over several years. Which cellular adaptation most directly
produces this structural change?
A. Increased apoptosis of cardiomyocytes with chamber enlargement
B. Addition of sarcomeres in parallel within cardiac myocytes in response to
pressure overload
C. Addition of sarcomeres in series caused primarily by chronic volume
overload
D. Replacement of ventricular muscle with adipose tissue
Answer: B
3. A 67-year-old patient presents with crushing substernal chest pain radiating
to the left arm, diaphoresis, and nausea. Cardiac biomarkers are markedly
elevated, and ECG findings demonstrate ST-segment elevation in contiguous
leads. Which pathophysiologic event most likely initiated the myocardial
injury?
pg. 1
, A. Gradual coronary vasodilation with increased myocardial oxygen supply
B. Chronic venous congestion causing reduced coronary perfusion
C. Rupture of an unstable atherosclerotic plaque followed by thrombotic
coronary occlusion
D. Isolated ventricular tachycardia causing chronic myocardial hypertrophy
Answer: C
4. A patient experiences predictable substernal chest discomfort whenever
walking several blocks that resolves after several minutes of rest. Troponin
levels remain normal. Which mechanism best explains this presentation?
A. Complete coronary artery occlusion causing transmural necrosis
B. Acute coronary embolism producing myocardial infarction
C. Coronary vasospasm occurring exclusively during sleep
D. Fixed coronary atherosclerotic narrowing producing a reversible supply-
demand mismatch
Answer: D
5. A patient with a large anterior myocardial infarction develops hypotension,
cool extremities, pulmonary edema, and altered mental status. Which
pathophysiologic process most directly explains the patient's shock state?
A. Severe loss of myocardial contractile function resulting in reduced cardiac
output and systemic tissue hypoperfusion
B. Excessive systemic vasodilation caused by isolated histamine release
C. Increased right ventricular preload with preserved left ventricular output
D. Increased circulating blood volume caused by renal sodium retention
Answer: A
6. A patient with an acute myocardial infarction develops sudden hypotension
and distended neck veins several days after the event. Echocardiography
demonstrates fluid surrounding the heart with impaired ventricular filling.
Which complication is most likely?
A. Papillary muscle hypertrophy
B. Cardiac tamponade caused by ventricular free-wall rupture and
hemopericardium
pg. 2
, C. Chronic stable angina
D. Left ventricular hypertrophy from pressure overload
Answer: B
7. A patient with long-standing hypertension develops exertional dyspnea,
pulmonary crackles, and reduced exercise tolerance. Which mechanism
best explains pulmonary congestion resulting from left-sided heart failure?
A. Reduced systemic venous pressure causing pulmonary vasodilation
B. Decreased pulmonary capillary hydrostatic pressure
C. Increased pulmonary venous and capillary hydrostatic pressure resulting
from impaired left ventricular emptying
D. Increased lymphatic drainage that overwhelms the systemic circulation
Answer: C
8. A patient with severe right-sided heart failure develops bilateral peripheral
edema and ascites. Which mechanism most directly contributes to these
findings?
A. Reduced systemic venous pressure
B. Increased pulmonary arterial oxygen content
C. Reduced capillary hydrostatic pressure
D. Increased systemic venous hydrostatic pressure causing movement of
fluid into the interstitial space
Answer: D
9. A patient with mitral stenosis develops progressive dyspnea and pulmonary
hypertension. Which hemodynamic abnormality occurs initially as blood
encounters resistance moving from the left atrium into the left ventricle?
A. Increased left atrial pressure
B. Reduced right ventricular afterload
C. Increased systemic arterial pressure caused directly by the valve lesion
D. Decreased pulmonary venous pressure
Answer: A
10. A patient with aortic stenosis develops exertional syncope and left
ventricular hypertrophy. Which pathophysiologic relationship best explains
pg. 3
, the ventricular response?
A. Reduced afterload causes eccentric hypertrophy
B. Increased left ventricular outflow resistance creates chronic pressure
overload and concentric hypertrophy
C. Increased venous return directly causes right ventricular hypertrophy
D. Reduced systemic resistance causes ventricular dilation
Answer: B
11. A patient develops sudden pleuritic chest pain, tachycardia, and hypoxemia
several days after major surgery. Which mechanism most likely explains a
pulmonary embolism in this setting?
A. Chronic alveolar destruction caused by cigarette smoke
B. Increased surfactant production causing airway obstruction
C. Venous thrombus formation with embolization to the pulmonary arterial
circulation
D. Left ventricular hypertrophy producing pulmonary arterial occlusion
Answer: C
12. A patient with a massive pulmonary embolism becomes hypotensive and
develops severe right ventricular strain. Which mechanism best explains the
cardiovascular deterioration?
A. Decreased pulmonary vascular resistance
B. Increased left ventricular preload caused by excessive pulmonary blood
flow
C. Reduced right ventricular afterload
D. Acute obstruction of pulmonary blood flow causing increased right
ventricular afterload and reduced left ventricular filling
Answer: D
13. A patient with chronic obstructive pulmonary disease has progressive
dyspnea, chronic cough, and prolonged expiration. Which pathophysiologic
process most strongly contributes to persistent airflow limitation?
A. Airway inflammation, mucus hypersecretion, and loss of elastic recoil
B. Increased alveolar surface area and improved elastic recoil
pg. 4
AND A NEW UPDATED STUDY GUIDE COMPLETE ACCURATE EXAM REAL
QUESTIONS WITH WELL ELABORATED ANSWERS
1. A 58-year-old patient with a long history of poorly controlled hypertension
develops progressive exertional dyspnea, orthopnea, and an S3 heart
sound. Echocardiography demonstrates a reduced left ventricular ejection
fraction. Which pathophysiologic mechanism most directly explains the
development of this patient's heart failure?
A. Chronic pressure and volume overload causing ventricular remodeling
and impaired contractility
B. Increased pulmonary venous compliance causing reduced ventricular
filling
C. Decreased sympathetic activity causing persistent systemic vasodilation
D. Isolated right ventricular dilation without impairment of left ventricular
function
Answer: A
2. A patient with chronic hypertension develops concentric left ventricular
hypertrophy over several years. Which cellular adaptation most directly
produces this structural change?
A. Increased apoptosis of cardiomyocytes with chamber enlargement
B. Addition of sarcomeres in parallel within cardiac myocytes in response to
pressure overload
C. Addition of sarcomeres in series caused primarily by chronic volume
overload
D. Replacement of ventricular muscle with adipose tissue
Answer: B
3. A 67-year-old patient presents with crushing substernal chest pain radiating
to the left arm, diaphoresis, and nausea. Cardiac biomarkers are markedly
elevated, and ECG findings demonstrate ST-segment elevation in contiguous
leads. Which pathophysiologic event most likely initiated the myocardial
injury?
pg. 1
, A. Gradual coronary vasodilation with increased myocardial oxygen supply
B. Chronic venous congestion causing reduced coronary perfusion
C. Rupture of an unstable atherosclerotic plaque followed by thrombotic
coronary occlusion
D. Isolated ventricular tachycardia causing chronic myocardial hypertrophy
Answer: C
4. A patient experiences predictable substernal chest discomfort whenever
walking several blocks that resolves after several minutes of rest. Troponin
levels remain normal. Which mechanism best explains this presentation?
A. Complete coronary artery occlusion causing transmural necrosis
B. Acute coronary embolism producing myocardial infarction
C. Coronary vasospasm occurring exclusively during sleep
D. Fixed coronary atherosclerotic narrowing producing a reversible supply-
demand mismatch
Answer: D
5. A patient with a large anterior myocardial infarction develops hypotension,
cool extremities, pulmonary edema, and altered mental status. Which
pathophysiologic process most directly explains the patient's shock state?
A. Severe loss of myocardial contractile function resulting in reduced cardiac
output and systemic tissue hypoperfusion
B. Excessive systemic vasodilation caused by isolated histamine release
C. Increased right ventricular preload with preserved left ventricular output
D. Increased circulating blood volume caused by renal sodium retention
Answer: A
6. A patient with an acute myocardial infarction develops sudden hypotension
and distended neck veins several days after the event. Echocardiography
demonstrates fluid surrounding the heart with impaired ventricular filling.
Which complication is most likely?
A. Papillary muscle hypertrophy
B. Cardiac tamponade caused by ventricular free-wall rupture and
hemopericardium
pg. 2
, C. Chronic stable angina
D. Left ventricular hypertrophy from pressure overload
Answer: B
7. A patient with long-standing hypertension develops exertional dyspnea,
pulmonary crackles, and reduced exercise tolerance. Which mechanism
best explains pulmonary congestion resulting from left-sided heart failure?
A. Reduced systemic venous pressure causing pulmonary vasodilation
B. Decreased pulmonary capillary hydrostatic pressure
C. Increased pulmonary venous and capillary hydrostatic pressure resulting
from impaired left ventricular emptying
D. Increased lymphatic drainage that overwhelms the systemic circulation
Answer: C
8. A patient with severe right-sided heart failure develops bilateral peripheral
edema and ascites. Which mechanism most directly contributes to these
findings?
A. Reduced systemic venous pressure
B. Increased pulmonary arterial oxygen content
C. Reduced capillary hydrostatic pressure
D. Increased systemic venous hydrostatic pressure causing movement of
fluid into the interstitial space
Answer: D
9. A patient with mitral stenosis develops progressive dyspnea and pulmonary
hypertension. Which hemodynamic abnormality occurs initially as blood
encounters resistance moving from the left atrium into the left ventricle?
A. Increased left atrial pressure
B. Reduced right ventricular afterload
C. Increased systemic arterial pressure caused directly by the valve lesion
D. Decreased pulmonary venous pressure
Answer: A
10. A patient with aortic stenosis develops exertional syncope and left
ventricular hypertrophy. Which pathophysiologic relationship best explains
pg. 3
, the ventricular response?
A. Reduced afterload causes eccentric hypertrophy
B. Increased left ventricular outflow resistance creates chronic pressure
overload and concentric hypertrophy
C. Increased venous return directly causes right ventricular hypertrophy
D. Reduced systemic resistance causes ventricular dilation
Answer: B
11. A patient develops sudden pleuritic chest pain, tachycardia, and hypoxemia
several days after major surgery. Which mechanism most likely explains a
pulmonary embolism in this setting?
A. Chronic alveolar destruction caused by cigarette smoke
B. Increased surfactant production causing airway obstruction
C. Venous thrombus formation with embolization to the pulmonary arterial
circulation
D. Left ventricular hypertrophy producing pulmonary arterial occlusion
Answer: C
12. A patient with a massive pulmonary embolism becomes hypotensive and
develops severe right ventricular strain. Which mechanism best explains the
cardiovascular deterioration?
A. Decreased pulmonary vascular resistance
B. Increased left ventricular preload caused by excessive pulmonary blood
flow
C. Reduced right ventricular afterload
D. Acute obstruction of pulmonary blood flow causing increased right
ventricular afterload and reduced left ventricular filling
Answer: D
13. A patient with chronic obstructive pulmonary disease has progressive
dyspnea, chronic cough, and prolonged expiration. Which pathophysiologic
process most strongly contributes to persistent airflow limitation?
A. Airway inflammation, mucus hypersecretion, and loss of elastic recoil
B. Increased alveolar surface area and improved elastic recoil
pg. 4
