NSG 5140 Complete South College Advanced
Pathophysiology Final Exam Questions and Answers |
instant pdf download
1. A 68-year-old patient with long-standing uncontrolled hypertension develops
left ventricular hypertrophy. Which pathophysiologic mechanism best explains
this cardiac adaptation over time?
A. Volume overload from increased venous return
B. Pressure overload due to increased systemic vascular resistance
C. Reduced myocardial oxygen demand
D. Decreased preload from fluid loss
Hypertension increases afterload, forcing the left ventricle to work harder, leading to
myocardial thickening and hypertrophy as a compensatory mechanism.
2. A hospitalized patient presents with chest pain, and laboratory testing is
ordered to confirm myocardial injury. Which biomarker is considered most
specific for cardiac muscle damage?
A. Creatine kinase (CK-MB)
B. Myoglobin
C. Troponin I
D. Lactate dehydrogenase (LDH)
Troponin I is highly specific to cardiac muscle tissue and remains elevated longer, making it
the most reliable marker for myocardial infarction.
3. A patient diagnosed with heart failure demonstrates preserved ejection
fraction but reports symptoms of fatigue and dyspnea. What is the underlying
pathophysiologic issue?
,A. Impaired ventricular contraction
B. Impaired ventricular relaxation and filling during diastole
C. Valve leaflet destruction
D. Acute myocardial ischemia
HFpEF results from stiff ventricles that cannot relax properly, reducing filling despite normal
contraction strength.
4. Atherosclerosis begins with endothelial injury. Which process most directly
contributes to plaque formation in arterial walls?
A. Increased HDL cholesterol transport
B. Accumulation of LDL cholesterol and inflammatory cell infiltration
C. Decreased platelet activity
D. Vasodilation of arterial walls
Endothelial damage allows LDL to infiltrate vessel walls, triggering inflammation and plaque
development.
5. A patient with chronic atrial fibrillation is at increased risk for developing
which serious complication due to blood stasis within the atria?
A. Pulmonary edema
B. Ischemic stroke caused by embolus formation
C. Pneumothorax
D. Myocardial rupture
Irregular atrial contractions promote clot formation, which can embolize to the brain causing
stroke.
6. A patient with fluid overload presents with increased venous return to the
heart. Which cardiovascular parameter is most directly increased by this
condition?
A. Afterload
B. Contractility
C. Preload
D. Heart rate
, Preload reflects the volume of blood entering the heart; fluid overload increases this
parameter significantly.
7. A patient diagnosed with anemia presents with fatigue and pallor. What is the
primary pathophysiologic reason for decreased oxygen delivery to tissues?
A. Reduced white blood cell production
B. Decreased hemoglobin concentration in red blood cells
C. Increased platelet destruction
D. Elevated plasma volume
Hemoglobin carries oxygen, so reduced levels directly impair oxygen transport to tissues.
8. Laboratory results reveal microcytic, hypochromic red blood cells in a patient.
Which condition is most consistent with these findings?
A. Vitamin B12 deficiency anemia
B. Iron deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Iron deficiency leads to smaller red blood cells with less hemoglobin, causing microcytosis and
hypochromia.
9. A patient develops sudden shortness of breath and chest pain after prolonged
immobility. From where do most pulmonary emboli typically originate?
A. Cardiac atria
B. Pulmonary veins
C. Deep veins of the lower extremities
D. Carotid arteries
Deep vein thrombosis (DVT) is the most common source of emboli that travel to the lungs.
10. Which combination of factors is known as Virchow’s triad and significantly
increases the risk of thrombus formation?
Pathophysiology Final Exam Questions and Answers |
instant pdf download
1. A 68-year-old patient with long-standing uncontrolled hypertension develops
left ventricular hypertrophy. Which pathophysiologic mechanism best explains
this cardiac adaptation over time?
A. Volume overload from increased venous return
B. Pressure overload due to increased systemic vascular resistance
C. Reduced myocardial oxygen demand
D. Decreased preload from fluid loss
Hypertension increases afterload, forcing the left ventricle to work harder, leading to
myocardial thickening and hypertrophy as a compensatory mechanism.
2. A hospitalized patient presents with chest pain, and laboratory testing is
ordered to confirm myocardial injury. Which biomarker is considered most
specific for cardiac muscle damage?
A. Creatine kinase (CK-MB)
B. Myoglobin
C. Troponin I
D. Lactate dehydrogenase (LDH)
Troponin I is highly specific to cardiac muscle tissue and remains elevated longer, making it
the most reliable marker for myocardial infarction.
3. A patient diagnosed with heart failure demonstrates preserved ejection
fraction but reports symptoms of fatigue and dyspnea. What is the underlying
pathophysiologic issue?
,A. Impaired ventricular contraction
B. Impaired ventricular relaxation and filling during diastole
C. Valve leaflet destruction
D. Acute myocardial ischemia
HFpEF results from stiff ventricles that cannot relax properly, reducing filling despite normal
contraction strength.
4. Atherosclerosis begins with endothelial injury. Which process most directly
contributes to plaque formation in arterial walls?
A. Increased HDL cholesterol transport
B. Accumulation of LDL cholesterol and inflammatory cell infiltration
C. Decreased platelet activity
D. Vasodilation of arterial walls
Endothelial damage allows LDL to infiltrate vessel walls, triggering inflammation and plaque
development.
5. A patient with chronic atrial fibrillation is at increased risk for developing
which serious complication due to blood stasis within the atria?
A. Pulmonary edema
B. Ischemic stroke caused by embolus formation
C. Pneumothorax
D. Myocardial rupture
Irregular atrial contractions promote clot formation, which can embolize to the brain causing
stroke.
6. A patient with fluid overload presents with increased venous return to the
heart. Which cardiovascular parameter is most directly increased by this
condition?
A. Afterload
B. Contractility
C. Preload
D. Heart rate
, Preload reflects the volume of blood entering the heart; fluid overload increases this
parameter significantly.
7. A patient diagnosed with anemia presents with fatigue and pallor. What is the
primary pathophysiologic reason for decreased oxygen delivery to tissues?
A. Reduced white blood cell production
B. Decreased hemoglobin concentration in red blood cells
C. Increased platelet destruction
D. Elevated plasma volume
Hemoglobin carries oxygen, so reduced levels directly impair oxygen transport to tissues.
8. Laboratory results reveal microcytic, hypochromic red blood cells in a patient.
Which condition is most consistent with these findings?
A. Vitamin B12 deficiency anemia
B. Iron deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Iron deficiency leads to smaller red blood cells with less hemoglobin, causing microcytosis and
hypochromia.
9. A patient develops sudden shortness of breath and chest pain after prolonged
immobility. From where do most pulmonary emboli typically originate?
A. Cardiac atria
B. Pulmonary veins
C. Deep veins of the lower extremities
D. Carotid arteries
Deep vein thrombosis (DVT) is the most common source of emboli that travel to the lungs.
10. Which combination of factors is known as Virchow’s triad and significantly
increases the risk of thrombus formation?
