University of Florida
Course Number: NUR 3123
Course Title: Pathophysiology & Pharmacology
Exam: Final Exam
Date:2026
A 68 year old patient with a history of chronic smoking presents with a new onset of facial swelling
and jugular venous distention. A CT scan reveals a large mass in the right upper lobe of the lung
compressing the superior vena cava. Which specific pathophysiological process is occurring in this
clinical scenario?
A. Left sided heart failure causing systemic backup.
B. Obstruction of venous return from the upper body to the right atrium.
C. Increased capillary permeability due to systemic inflammation.
D. Reduced oncotic pressure from paraneoplastic protein loss.
Answer: B.
Rationale: Superior Vena Cava Syndrome occurs when an external mass, typically a tumor,
compresses the thin walled SVC. This leads to increased venous pressure in the head, neck, and
upper extremities because blood cannot return effectively to the heart.
A patient with end stage renal disease is found to have a serum potassium level of 7.2 mEq/L.
Which cardiac conduction change is the most immediate pathophysiological concern in this
patient?
A. Decreased threshold for depolarization causing tachycardia.
B. Delayed repolarization leading to a prolonged QT interval.
C. Depolarization of the resting membrane potential causing bradycardia or asystole.
D. Rapid influx of sodium causing shortened QRS complexes.
Answer: C.
Rationale: High extracellular potassium levels move the resting membrane potential closer to the
threshold. However, severe hyperkalemia eventually inactivates sodium channels and slows
conduction, leading to peaked T waves, widened QRS complexes, and ultimately cardiac arrest.
True or False: In a patient with tension pneumothorax, the primary cause of obstructive shock is the
compression of the great vessels and the heart, which severely limits diastolic filling.
Answer: True.
Rationale: As air accumulates in the pleural space, it shifts the mediastinum and kins the superior
,and inferior vena cava. This reduces venous return to the right heart, leading to a catastrophic drop
in cardiac output.
Fill in the blank: The compensatory mechanism in which the kidneys secrete erythropoietin in
response to chronic hypoxia is an example of secondary ________.
Answer: Polycythemia.
Rationale: When the body senses low oxygen levels, as seen in chronic lung disease or high
altitudes, the kidneys release erythropoietin to stimulate the bone marrow to produce more red
blood cells to increase oxygen carrying capacity.
A patient with a history of intravenous drug use presents with a high fever and a new heart
murmur. An echocardiogram shows vegetative growths on the tricuspid valve. Which
pathophysiological complication is this patient at highest risk for developing?
A. Ischemic stroke from left sided emboli.
B. Pulmonary embolism from right sided emboli.
C. Myocardial infarction from coronary artery occlusion.
D. Portal hypertension from hepatic vein blockage.
Answer: B.
Rationale: Endocarditis of the tricuspid valve involves the right side of the heart. If the vegetations
break loose, they enter the pulmonary circulation, potentially causing septic pulmonary emboli. Left
sided vegetations cause systemic emboli.
A patient is diagnosed with Type 1 Diabetes Mellitus. Which pathophysiological mechanism best
describes the destruction of the pancreatic beta cells?
A. Insulin resistance leading to beta cell exhaustion.
B. Amyloid deposition within the Islets of Langerhans.
C. T cell mediated autoimmune destruction of insulin producing cells.
D. Chronic inflammation from a diet high in processed sugars.
Answer: C.
Rationale: Type 1 Diabetes is an organ specific autoimmune disease. In genetically susceptible
individuals, an environmental trigger causes T lymphocytes to mistakenly attack and destroy the
insulin producing beta cells in the pancreas.
True or False: In the pathophysiology of Alzheimer's disease, neurofibrillary tangles are composed
of abnormally folded amyloid-beta proteins found outside the neurons.
Answer: False.
Rationale: Neurofibrillary tangles are composed of tau protein and are found inside the neurons.
Amyloid-beta proteins form plaques that are found in the extracellular spaces between neurons.
Fill in the blank: The phenomenon in which a patient with chronic liver failure develops renal failure
in the absence of primary kidney disease is known as ________ syndrome.
Answer: Hepatorenal.
,Rationale: Hepatorenal syndrome occurs when advanced cirrhosis causes systemic vasodilation,
which leads to profound renal vasoconstriction and a subsequent drop in the glomerular filtration
rate.
A patient with a massive pulmonary embolism begins to exhibit signs of right heart failure. What is
the specific term for this sudden cardiac condition caused by primary lung pathology?
A. Cardiac tamponade.
B. Cor pulmonale.
C. Dressler syndrome.
D. Myhcarditis.
Answer: B.
Rationale: Cor pulmonale is defined as right ventricular enlargement and failure resulting from
increased resistance within the pulmonary circulation, such as from a pulmonary embolism or
chronic obstructive pulmonary disease.
During the early stages of septic shock, the patient often exhibits a high cardiac output and low
systemic vascular resistance. This is primarily caused by which pathophysiological event?
A. Excessive sympathetic nervous system stimulation.
B. Release of nitric oxide and other inflammatory mediators causing vasodilation.
C. Increased blood volume from capillary leak syndrome.
D. Myocardial depression caused by endotoxins.
Answer: B.
Rationale: In sepsis, the immune response triggers the release of potent vasodilators like nitric
oxide. This drops the systemic vascular resistance significantly, and the heart compensates by
increasing its rate and stroke volume initially.
True or False: In the pathophysiology of multiple sclerosis, the primary defect is the destruction of
the myelin sheath in the peripheral nervous system by macrophages.
Answer: False.
Rationale: Multiple sclerosis is a disease of the central nervous system (brain and spinal cord). The
peripheral nervous system is affected in conditions like Guillain-Barre syndrome.
Fill in the blank: The shift in the oxyhemoglobin dissociation curve to the right, which facilitates the
release of oxygen to the tissues during states of acidosis or hypercapnia, is known as the ________
Effect.
Answer: Bohr.
Rationale: The Bohr Effect describes how increases in carbon dioxide and decreases in pH reduce
the affinity of hemoglobin for oxygen, allowing more oxygen to be delivered to metabolically active
tissues.
A patient with Graves' disease presents with tachycardia, heat intolerance, and exophthalmos.
What is the fundamental cause of the exophthalmos in this disorder?
A. Increased intracranial pressure from hypermetabolism.
, B. Accumulation of glycosaminoglycans and inflammation behind the eyes.
C. Chronic dehydration causing the skin around the eyes to shrink.
D. Hypertension causing the eyes to protrude forward.
Answer: B.
Rationale: Graves' ophthalmopathy is caused by an autoimmune attack on the orbital fibroblasts.
This leads to the buildup of extracellular matrix components and edema, which physically pushes
the eyeballs forward.
What is the primary pathophysiological driver of the edema seen in patients with nephrotic
syndrome?
A. Increased hydrostatic pressure from fluid overload.
B. Increased capillary permeability from systemic infection.
C. Decreased plasma oncotic pressure due to massive albuminuria.
D. Obstruction of the lymphatic drainage system by protein casts.
Answer: C.
Rationale: In nephrotic syndrome, the glomerulus loses its ability to retain albumin. The resulting
low serum albumin (hypoalbuminemia) reduces the osmotic pressure that normally keeps fluid
inside the vessels, causing it to leak into the tissues.
True or False: Myocardial stunning refers to the permanent death of heart muscle cells following a
prolonged period of ischemia and lack of reperfusion.
Answer: False.
Rationale: Myocardial stunning is a temporary loss of contractile function after reperfusion that
eventually resolves. Permanent death of heart muscle is referred to as myocardial infarction or
necrosis.
Fill in the blank: The neurovascular complication of cirrhosis in which the patient develops a
flapping tremor of the hands due to ammonia accumulation is called ________.
Answer: Asterixis.
Rationale: Asterixis, also known as liver flap, is a hallmark sign of hepatic encephalopathy. It occurs
when toxic levels of metabolic waste, like ammonia, interfere with neurotransmission in the brain.
A patient with Vitamin B12 deficiency presents with paresthesias and difficulty walking. Which
pathophysiological change in the nervous system is responsible for these symptoms?
A. Loss of dopamine in the substantia nigra.
B. Demyelination of the posterior and lateral columns of the spinal cord.
C. Chronic inflammation of the meninges.
D. Hypertrophy of the peripheral sensory nerves.
Answer: B.
Rationale: Vitamin B12 is essential for myelin synthesis. Deficiency leads to subacute combined
Course Number: NUR 3123
Course Title: Pathophysiology & Pharmacology
Exam: Final Exam
Date:2026
A 68 year old patient with a history of chronic smoking presents with a new onset of facial swelling
and jugular venous distention. A CT scan reveals a large mass in the right upper lobe of the lung
compressing the superior vena cava. Which specific pathophysiological process is occurring in this
clinical scenario?
A. Left sided heart failure causing systemic backup.
B. Obstruction of venous return from the upper body to the right atrium.
C. Increased capillary permeability due to systemic inflammation.
D. Reduced oncotic pressure from paraneoplastic protein loss.
Answer: B.
Rationale: Superior Vena Cava Syndrome occurs when an external mass, typically a tumor,
compresses the thin walled SVC. This leads to increased venous pressure in the head, neck, and
upper extremities because blood cannot return effectively to the heart.
A patient with end stage renal disease is found to have a serum potassium level of 7.2 mEq/L.
Which cardiac conduction change is the most immediate pathophysiological concern in this
patient?
A. Decreased threshold for depolarization causing tachycardia.
B. Delayed repolarization leading to a prolonged QT interval.
C. Depolarization of the resting membrane potential causing bradycardia or asystole.
D. Rapid influx of sodium causing shortened QRS complexes.
Answer: C.
Rationale: High extracellular potassium levels move the resting membrane potential closer to the
threshold. However, severe hyperkalemia eventually inactivates sodium channels and slows
conduction, leading to peaked T waves, widened QRS complexes, and ultimately cardiac arrest.
True or False: In a patient with tension pneumothorax, the primary cause of obstructive shock is the
compression of the great vessels and the heart, which severely limits diastolic filling.
Answer: True.
Rationale: As air accumulates in the pleural space, it shifts the mediastinum and kins the superior
,and inferior vena cava. This reduces venous return to the right heart, leading to a catastrophic drop
in cardiac output.
Fill in the blank: The compensatory mechanism in which the kidneys secrete erythropoietin in
response to chronic hypoxia is an example of secondary ________.
Answer: Polycythemia.
Rationale: When the body senses low oxygen levels, as seen in chronic lung disease or high
altitudes, the kidneys release erythropoietin to stimulate the bone marrow to produce more red
blood cells to increase oxygen carrying capacity.
A patient with a history of intravenous drug use presents with a high fever and a new heart
murmur. An echocardiogram shows vegetative growths on the tricuspid valve. Which
pathophysiological complication is this patient at highest risk for developing?
A. Ischemic stroke from left sided emboli.
B. Pulmonary embolism from right sided emboli.
C. Myocardial infarction from coronary artery occlusion.
D. Portal hypertension from hepatic vein blockage.
Answer: B.
Rationale: Endocarditis of the tricuspid valve involves the right side of the heart. If the vegetations
break loose, they enter the pulmonary circulation, potentially causing septic pulmonary emboli. Left
sided vegetations cause systemic emboli.
A patient is diagnosed with Type 1 Diabetes Mellitus. Which pathophysiological mechanism best
describes the destruction of the pancreatic beta cells?
A. Insulin resistance leading to beta cell exhaustion.
B. Amyloid deposition within the Islets of Langerhans.
C. T cell mediated autoimmune destruction of insulin producing cells.
D. Chronic inflammation from a diet high in processed sugars.
Answer: C.
Rationale: Type 1 Diabetes is an organ specific autoimmune disease. In genetically susceptible
individuals, an environmental trigger causes T lymphocytes to mistakenly attack and destroy the
insulin producing beta cells in the pancreas.
True or False: In the pathophysiology of Alzheimer's disease, neurofibrillary tangles are composed
of abnormally folded amyloid-beta proteins found outside the neurons.
Answer: False.
Rationale: Neurofibrillary tangles are composed of tau protein and are found inside the neurons.
Amyloid-beta proteins form plaques that are found in the extracellular spaces between neurons.
Fill in the blank: The phenomenon in which a patient with chronic liver failure develops renal failure
in the absence of primary kidney disease is known as ________ syndrome.
Answer: Hepatorenal.
,Rationale: Hepatorenal syndrome occurs when advanced cirrhosis causes systemic vasodilation,
which leads to profound renal vasoconstriction and a subsequent drop in the glomerular filtration
rate.
A patient with a massive pulmonary embolism begins to exhibit signs of right heart failure. What is
the specific term for this sudden cardiac condition caused by primary lung pathology?
A. Cardiac tamponade.
B. Cor pulmonale.
C. Dressler syndrome.
D. Myhcarditis.
Answer: B.
Rationale: Cor pulmonale is defined as right ventricular enlargement and failure resulting from
increased resistance within the pulmonary circulation, such as from a pulmonary embolism or
chronic obstructive pulmonary disease.
During the early stages of septic shock, the patient often exhibits a high cardiac output and low
systemic vascular resistance. This is primarily caused by which pathophysiological event?
A. Excessive sympathetic nervous system stimulation.
B. Release of nitric oxide and other inflammatory mediators causing vasodilation.
C. Increased blood volume from capillary leak syndrome.
D. Myocardial depression caused by endotoxins.
Answer: B.
Rationale: In sepsis, the immune response triggers the release of potent vasodilators like nitric
oxide. This drops the systemic vascular resistance significantly, and the heart compensates by
increasing its rate and stroke volume initially.
True or False: In the pathophysiology of multiple sclerosis, the primary defect is the destruction of
the myelin sheath in the peripheral nervous system by macrophages.
Answer: False.
Rationale: Multiple sclerosis is a disease of the central nervous system (brain and spinal cord). The
peripheral nervous system is affected in conditions like Guillain-Barre syndrome.
Fill in the blank: The shift in the oxyhemoglobin dissociation curve to the right, which facilitates the
release of oxygen to the tissues during states of acidosis or hypercapnia, is known as the ________
Effect.
Answer: Bohr.
Rationale: The Bohr Effect describes how increases in carbon dioxide and decreases in pH reduce
the affinity of hemoglobin for oxygen, allowing more oxygen to be delivered to metabolically active
tissues.
A patient with Graves' disease presents with tachycardia, heat intolerance, and exophthalmos.
What is the fundamental cause of the exophthalmos in this disorder?
A. Increased intracranial pressure from hypermetabolism.
, B. Accumulation of glycosaminoglycans and inflammation behind the eyes.
C. Chronic dehydration causing the skin around the eyes to shrink.
D. Hypertension causing the eyes to protrude forward.
Answer: B.
Rationale: Graves' ophthalmopathy is caused by an autoimmune attack on the orbital fibroblasts.
This leads to the buildup of extracellular matrix components and edema, which physically pushes
the eyeballs forward.
What is the primary pathophysiological driver of the edema seen in patients with nephrotic
syndrome?
A. Increased hydrostatic pressure from fluid overload.
B. Increased capillary permeability from systemic infection.
C. Decreased plasma oncotic pressure due to massive albuminuria.
D. Obstruction of the lymphatic drainage system by protein casts.
Answer: C.
Rationale: In nephrotic syndrome, the glomerulus loses its ability to retain albumin. The resulting
low serum albumin (hypoalbuminemia) reduces the osmotic pressure that normally keeps fluid
inside the vessels, causing it to leak into the tissues.
True or False: Myocardial stunning refers to the permanent death of heart muscle cells following a
prolonged period of ischemia and lack of reperfusion.
Answer: False.
Rationale: Myocardial stunning is a temporary loss of contractile function after reperfusion that
eventually resolves. Permanent death of heart muscle is referred to as myocardial infarction or
necrosis.
Fill in the blank: The neurovascular complication of cirrhosis in which the patient develops a
flapping tremor of the hands due to ammonia accumulation is called ________.
Answer: Asterixis.
Rationale: Asterixis, also known as liver flap, is a hallmark sign of hepatic encephalopathy. It occurs
when toxic levels of metabolic waste, like ammonia, interfere with neurotransmission in the brain.
A patient with Vitamin B12 deficiency presents with paresthesias and difficulty walking. Which
pathophysiological change in the nervous system is responsible for these symptoms?
A. Loss of dopamine in the substantia nigra.
B. Demyelination of the posterior and lateral columns of the spinal cord.
C. Chronic inflammation of the meninges.
D. Hypertrophy of the peripheral sensory nerves.
Answer: B.
Rationale: Vitamin B12 is essential for myelin synthesis. Deficiency leads to subacute combined
