[NR 283 NR283 PATHOPHYSIOLOGY FINAL EXAM VERSION 1 2025] –
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Cellular Adaptations & Injury
Inflammation & Immunity
Fluid, Electrolyte, & Acid-Base Balance
Genetics & Neoplasia
Alterations in Hematologic Function
Alterations in Cardiovascular Function
Alterations in Respiratory Function
Alterations in Renal & Urinary Function
Alterations in Neurologic Function
Alterations in Endocrine Function
Introduction
This comprehensive examination is designed to rigorously assess your
understanding of core pathophysiological concepts essential for clinical nursing
practice. The exam evaluates your ability to apply foundational knowledge of
disease processes, recognize clinical manifestations, and interpret diagnostic data to
make sound clinical decisions. Comprising 200 multiple-choice questions, this
assessment presents both theoretical inquiries and complex, real-world scenarios
that demand critical thinking and the application of professional standards. Each
question is accompanied by a detailed rationale to reinforce learning and ensure a
deep comprehension of the material. This resource is intended to prepare you for
success, fostering the clinical judgment necessary for safe and effective patient care.
SECTION ONE: QUESTIONS 1 - 100
1. A patient diagnosed with chronic bronchitis presents with a persistent cough
and cyanosis. Which pathophysiological mechanism is the primary cause of the
cyanosis?
A. Increased carbon dioxide retention
,B. Decreased oxygen saturation
C. Increased red blood cell count
D. Decreased cardiac output
🟢 B. Decreased oxygen saturation
🔴 Explanation: Cyanosis, a bluish discoloration of the skin and mucous
membranes, is primarily caused by an increased amount of deoxygenated
hemoglobin in the blood, which is a direct result of decreased arterial oxygen
saturation (SaO2). While increased carbon dioxide (A) can contribute to
respiratory acidosis and altered mental status, it doesn't directly cause cyanosis.
Polycythemia (C), an increased red blood cell count, is a compensatory response
to chronic hypoxia, not the cause of cyanosis. Decreased cardiac output (D) can
lead to poor tissue perfusion and central cyanosis, but the fundamental cause in a
patient with chronic bronchitis is inadequate gas exchange leading to low oxygen
saturation.
2. A client with a history of heart failure is prescribed furosemide. The nurse
should monitor for which potential electrolyte imbalance?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypermagnesemia
🟢 B. Hypokalemia
🔴 Explanation: Furosemide is a loop diuretic that inhibits sodium and chloride
reabsorption in the thick ascending limb of the loop of Henle. This also leads to
increased excretion of potassium and hydrogen ions, making hypokalemia a
common and significant adverse effect. Hyperkalemia (A) is associated with
potassium-sparing diuretics or renal failure. Hypernatremia (C) is not a typical side
effect of loop diuretics and can result from fluid loss without adequate water
replacement, but hypokalemia is a more direct and prominent effect.
Hypermagnesemia (D) is not a typical side effect of furosemide.
3. A patient is diagnosed with Metabolic Alkalosis. Which set of arterial blood
gas (ABG) values would the nurse anticipate?
A. pH 7.32, PaCO2 48, HCO3 24
B. pH 7.48, PaCO2 32, HCO3 20
C. pH 7.30, PaCO2 35, HCO3 18
D. pH 7.50, PaCO2 40, HCO3 32
,🟢 D. pH 7.50, PaCO2 40, HCO3 32
🔴 Explanation: Metabolic alkalosis is characterized by a primary increase in
bicarbonate (HCO3) levels and a subsequent elevation in pH, making the blood
more alkaline. Option D shows a high pH (7.50) and a high HCO3 (32) with a
normal PaCO2 (40), indicating a metabolic (non-respiratory) origin for the
alkalosis. Option A indicates respiratory acidosis (low pH, high PaCO2). Option B
indicates respiratory alkalosis (high pH, low PaCO2). Option C indicates metabolic
acidosis (low pH, low HCO3).
4. A patient has a genetic condition that causes a defect in the CFTR gene,
leading to thick, tenacious mucus in the lungs and digestive tract. This is
characteristic of which disorder?
A. Huntington's disease
B. Cystic fibrosis
C. Marfan syndrome
D. Phenylketonuria
🟢 B. Cystic fibrosis
🔴 Explanation: Cystic fibrosis is an autosomal recessive genetic disorder caused
by a mutation in the CFTR gene, which encodes a chloride channel. The defect
leads to the production of abnormally thick and sticky mucus that obstructs the
airways and pancreatic ducts, leading to chronic lung infections and digestive
problems. Huntington's disease (A) is a neurodegenerative disorder. Marfan
syndrome (C) affects connective tissue. Phenylketonuria (PKU) (D) is a metabolic
disorder involving the inability to metabolize phenylalanine.
5. A patient is experiencing severe, crushing chest pain that radiates to the left
arm. Which cardiac enzyme is most specific for myocardial necrosis in the early
hours (3-4 hours) following the onset of pain?
A. Creatine Kinase-MB (CK-MB)
B. Myoglobin
C. Troponin I
D. Lactate Dehydrogenase (LDH)
🟢 C. Troponin I
🔴 Explanation: Cardiac troponins (Troponin I and T) are highly specific and
sensitive biomarkers for myocardial injury. Troponin I begins to rise within 3-4
hours after the onset of myocardial infarction (MI), making it the preferred marker
for early diagnosis. CK-MB (A) also rises but is less specific than troponin and can
, be elevated in skeletal muscle damage. Myoglobin (B) rises very early but lacks
cardiac specificity. LDH (D) rises later and is also not cardiac-specific.
6. A client with a history of liver cirrhosis develops ascites. This is primarily due
to:
A. Increased capillary hydrostatic pressure
B. Decreased plasma oncotic pressure
C. Increased capillary permeability
D. Lymphatic obstruction
🟢 B. Decreased plasma oncotic pressure
🔴 Explanation: In liver cirrhosis, hepatocytes are unable to produce sufficient
amounts of albumin, the main plasma protein. This leads to a decrease in plasma
oncotic (colloid osmotic) pressure. As a result, fluid shifts from the intravascular
space into the interstitial space, contributing to the formation of ascites and
peripheral edema. While increased capillary hydrostatic pressure (A) is a cause of
edema in conditions like heart failure, it is a secondary factor in cirrhosis due to
portal hypertension. Increased capillary permeability (C) is associated with
inflammation. Lymphatic obstruction (D) can cause localized edema but is not the
primary cause in cirrhosis.
7. During the inflammatory response, which cell type is the first to arrive at the
site of tissue injury?
A. Lymphocytes
B. Macrophages
C. Neutrophils
D. Eosinophils
🟢 C. Neutrophils
🔴 Explanation: Neutrophils are the primary phagocytes and the most abundant
white blood cells. They are the first leukocytes to migrate to the site of injury, a
process known as chemotaxis, usually within 6-12 hours. Their primary function is
to engulf and destroy pathogens and cellular debris. Lymphocytes (A) are central
to the adaptive immune response and arrive later. Macrophages (B) arrive after
neutrophils and are responsible for cleaning up debris and initiating tissue repair.
Eosinophils (D) are primarily involved in combating parasitic infections and
mediating allergic reactions.
8. A patient is diagnosed with an allergic reaction to a bee sting. Which type of
hypersensitivity reaction is occurring?
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Cellular Adaptations & Injury
Inflammation & Immunity
Fluid, Electrolyte, & Acid-Base Balance
Genetics & Neoplasia
Alterations in Hematologic Function
Alterations in Cardiovascular Function
Alterations in Respiratory Function
Alterations in Renal & Urinary Function
Alterations in Neurologic Function
Alterations in Endocrine Function
Introduction
This comprehensive examination is designed to rigorously assess your
understanding of core pathophysiological concepts essential for clinical nursing
practice. The exam evaluates your ability to apply foundational knowledge of
disease processes, recognize clinical manifestations, and interpret diagnostic data to
make sound clinical decisions. Comprising 200 multiple-choice questions, this
assessment presents both theoretical inquiries and complex, real-world scenarios
that demand critical thinking and the application of professional standards. Each
question is accompanied by a detailed rationale to reinforce learning and ensure a
deep comprehension of the material. This resource is intended to prepare you for
success, fostering the clinical judgment necessary for safe and effective patient care.
SECTION ONE: QUESTIONS 1 - 100
1. A patient diagnosed with chronic bronchitis presents with a persistent cough
and cyanosis. Which pathophysiological mechanism is the primary cause of the
cyanosis?
A. Increased carbon dioxide retention
,B. Decreased oxygen saturation
C. Increased red blood cell count
D. Decreased cardiac output
🟢 B. Decreased oxygen saturation
🔴 Explanation: Cyanosis, a bluish discoloration of the skin and mucous
membranes, is primarily caused by an increased amount of deoxygenated
hemoglobin in the blood, which is a direct result of decreased arterial oxygen
saturation (SaO2). While increased carbon dioxide (A) can contribute to
respiratory acidosis and altered mental status, it doesn't directly cause cyanosis.
Polycythemia (C), an increased red blood cell count, is a compensatory response
to chronic hypoxia, not the cause of cyanosis. Decreased cardiac output (D) can
lead to poor tissue perfusion and central cyanosis, but the fundamental cause in a
patient with chronic bronchitis is inadequate gas exchange leading to low oxygen
saturation.
2. A client with a history of heart failure is prescribed furosemide. The nurse
should monitor for which potential electrolyte imbalance?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypermagnesemia
🟢 B. Hypokalemia
🔴 Explanation: Furosemide is a loop diuretic that inhibits sodium and chloride
reabsorption in the thick ascending limb of the loop of Henle. This also leads to
increased excretion of potassium and hydrogen ions, making hypokalemia a
common and significant adverse effect. Hyperkalemia (A) is associated with
potassium-sparing diuretics or renal failure. Hypernatremia (C) is not a typical side
effect of loop diuretics and can result from fluid loss without adequate water
replacement, but hypokalemia is a more direct and prominent effect.
Hypermagnesemia (D) is not a typical side effect of furosemide.
3. A patient is diagnosed with Metabolic Alkalosis. Which set of arterial blood
gas (ABG) values would the nurse anticipate?
A. pH 7.32, PaCO2 48, HCO3 24
B. pH 7.48, PaCO2 32, HCO3 20
C. pH 7.30, PaCO2 35, HCO3 18
D. pH 7.50, PaCO2 40, HCO3 32
,🟢 D. pH 7.50, PaCO2 40, HCO3 32
🔴 Explanation: Metabolic alkalosis is characterized by a primary increase in
bicarbonate (HCO3) levels and a subsequent elevation in pH, making the blood
more alkaline. Option D shows a high pH (7.50) and a high HCO3 (32) with a
normal PaCO2 (40), indicating a metabolic (non-respiratory) origin for the
alkalosis. Option A indicates respiratory acidosis (low pH, high PaCO2). Option B
indicates respiratory alkalosis (high pH, low PaCO2). Option C indicates metabolic
acidosis (low pH, low HCO3).
4. A patient has a genetic condition that causes a defect in the CFTR gene,
leading to thick, tenacious mucus in the lungs and digestive tract. This is
characteristic of which disorder?
A. Huntington's disease
B. Cystic fibrosis
C. Marfan syndrome
D. Phenylketonuria
🟢 B. Cystic fibrosis
🔴 Explanation: Cystic fibrosis is an autosomal recessive genetic disorder caused
by a mutation in the CFTR gene, which encodes a chloride channel. The defect
leads to the production of abnormally thick and sticky mucus that obstructs the
airways and pancreatic ducts, leading to chronic lung infections and digestive
problems. Huntington's disease (A) is a neurodegenerative disorder. Marfan
syndrome (C) affects connective tissue. Phenylketonuria (PKU) (D) is a metabolic
disorder involving the inability to metabolize phenylalanine.
5. A patient is experiencing severe, crushing chest pain that radiates to the left
arm. Which cardiac enzyme is most specific for myocardial necrosis in the early
hours (3-4 hours) following the onset of pain?
A. Creatine Kinase-MB (CK-MB)
B. Myoglobin
C. Troponin I
D. Lactate Dehydrogenase (LDH)
🟢 C. Troponin I
🔴 Explanation: Cardiac troponins (Troponin I and T) are highly specific and
sensitive biomarkers for myocardial injury. Troponin I begins to rise within 3-4
hours after the onset of myocardial infarction (MI), making it the preferred marker
for early diagnosis. CK-MB (A) also rises but is less specific than troponin and can
, be elevated in skeletal muscle damage. Myoglobin (B) rises very early but lacks
cardiac specificity. LDH (D) rises later and is also not cardiac-specific.
6. A client with a history of liver cirrhosis develops ascites. This is primarily due
to:
A. Increased capillary hydrostatic pressure
B. Decreased plasma oncotic pressure
C. Increased capillary permeability
D. Lymphatic obstruction
🟢 B. Decreased plasma oncotic pressure
🔴 Explanation: In liver cirrhosis, hepatocytes are unable to produce sufficient
amounts of albumin, the main plasma protein. This leads to a decrease in plasma
oncotic (colloid osmotic) pressure. As a result, fluid shifts from the intravascular
space into the interstitial space, contributing to the formation of ascites and
peripheral edema. While increased capillary hydrostatic pressure (A) is a cause of
edema in conditions like heart failure, it is a secondary factor in cirrhosis due to
portal hypertension. Increased capillary permeability (C) is associated with
inflammation. Lymphatic obstruction (D) can cause localized edema but is not the
primary cause in cirrhosis.
7. During the inflammatory response, which cell type is the first to arrive at the
site of tissue injury?
A. Lymphocytes
B. Macrophages
C. Neutrophils
D. Eosinophils
🟢 C. Neutrophils
🔴 Explanation: Neutrophils are the primary phagocytes and the most abundant
white blood cells. They are the first leukocytes to migrate to the site of injury, a
process known as chemotaxis, usually within 6-12 hours. Their primary function is
to engulf and destroy pathogens and cellular debris. Lymphocytes (A) are central
to the adaptive immune response and arrive later. Macrophages (B) arrive after
neutrophils and are responsible for cleaning up debris and initiating tissue repair.
Eosinophils (D) are primarily involved in combating parasitic infections and
mediating allergic reactions.
8. A patient is diagnosed with an allergic reaction to a bee sting. Which type of
hypersensitivity reaction is occurring?
