Maryville PATHO NURS 611 Exam
(Latest) – Complete Exam 7 with
Verified Answers (2026 Edition)
Question 1: A client is diagnosed with systemic lupus erythematosus (SLE). Which pathophysiological
mechanism underlies this autoimmune disorder?
A) Type I hypersensitivity reaction mediated by IgE antibodies
B) Type II hypersensitivity reaction involving antibody-mediated cytotoxicity
C) Type III hypersensitivity reaction with immune complex deposition
D) Type IV hypersensitivity reaction mediated by T lymphocytes
Answer: C) Type III hypersensitivity reaction with immune complex deposition
Rationale: Systemic lupus erythematosus (SLE) is a Type III hypersensitivity reaction characterized by the
deposition of immune complexes (antigen-antibody complexes) in various tissues, including the kidneys,
skin, joints, and blood vessels. This deposition triggers inflammation and tissue damage. Type I reactions
involve IgE (allergies), Type II involves antibody-mediated cytotoxicity (autoimmune hemolytic anemia),
and Type IV involves T-cell mediated responses (contact dermatitis).
Question 2: A client with chronic kidney disease has developed anemia. Which pathophysiological
mechanism is most likely responsible?
A) Decreased production of erythropoietin by the kidneys
B) Increased destruction of red blood cells in the spleen
C) Vitamin B12 deficiency
D) Iron deficiency due to poor dietary intake
Answer: A) Decreased production of erythropoietin by the kidneys
Rationale: Erythropoietin is produced by the kidneys and stimulates red blood cell production in the bone
marrow. In chronic kidney disease, damaged kidneys produce less erythropoietin, leading to anemia. This
is called anemia of chronic disease or renal anemia. While iron deficiency, vitamin B12 deficiency, and
increased RBC destruction can also cause anemia, decreased erythropoietin production is the primary
mechanism in CKD.
Question 3: A client is admitted with acute pancreatitis. Which pathophysiological event initiates the
inflammatory process?
,A) Activation of pancreatic enzymes within the pancreas
B) Bile duct obstruction causing pancreatic duct hypertension
C) Ischemia of pancreatic tissue
D) Autoimmune destruction of pancreatic cells
Answer: A) Activation of pancreatic enzymes within the pancreas
Rationale: Acute pancreatitis is initiated by the premature activation of pancreatic enzymes (especially
trypsin) within the pancreas. This leads to autodigestion of pancreatic tissue, inflammation, and necrosis.
Bile duct obstruction, ischemia, and autoimmune processes can contribute to pancreatitis but are not the
primary initiating event. The activated enzymes cause damage to pancreatic cells and surrounding
tissues.
Question 4: A client with cirrhosis develops portal hypertension. Which complication is most directly
related to this pathophysiological change?
A) Hepatic encephalopathy
B) Ascites
C) Jaundice
D) Coagulopathy
Answer: B) Ascites
Rationale: Portal hypertension increases pressure in the portal venous system, leading to fluid shifting
into the peritoneal cavity and causing ascites. Hepatic encephalopathy results from the liver's inability to
detoxify ammonia. Jaundice results from impaired bilirubin metabolism. Coagulopathy results from
decreased production of clotting factors. While all are complications of cirrhosis, ascites is most directly
caused by portal hypertension.
Question 5: A client is diagnosed with type 2 diabetes mellitus. Which pathophysiological mechanism is
most characteristic of this condition?
A) Absolute deficiency of insulin production
B) Insulin resistance and relative insulin deficiency
C) Autoimmune destruction of pancreatic beta cells
D) Increased production of glucagon
Answer: B) Insulin resistance and relative insulin deficiency
Rationale: Type 2 diabetes mellitus is characterized by insulin resistance, where cells do not respond
effectively to insulin, and relative insulin deficiency, where the pancreas cannot produce enough insulin
to overcome the resistance. Type 1 diabetes is characterized by absolute insulin deficiency due to
autoimmune destruction of beta cells. Increased glucagon production can occur but is not the primary
mechanism.
, Question 6: A client with heart failure develops pulmonary edema. Which pathophysiological
mechanism is responsible?
A) Decreased cardiac output causing systemic vasoconstriction
B) Increased left ventricular pressure causing fluid backup into the lungs
C) Decreased renal perfusion causing fluid retention
D) Increased systemic vascular resistance
Answer: B) Increased left ventricular pressure causing fluid backup into the lungs
Rationale: In heart failure, the left ventricle cannot effectively pump blood forward, leading to increased
left ventricular pressure. This pressure is transmitted backward to the left atrium, pulmonary veins, and
pulmonary capillaries, causing fluid to leak into the alveoli and resulting in pulmonary edema. Decreased
cardiac output, renal hypoperfusion, and increased systemic vascular resistance are also present but are
not the direct cause of pulmonary edema.
Question 7: A client with chronic obstructive pulmonary disease (COPD) develops cor pulmonale. Which
pathophysiological change leads to this complication?
A) Decreased alveolar ventilation causing hypoxemia
B) Pulmonary hypertension causing right ventricular hypertrophy
C) Hypercapnia causing respiratory acidosis
D) Air trapping causing hyperinflation of the lungs
Answer: B) Pulmonary hypertension causing right ventricular hypertrophy
Rationale: Cor pulmonale is right-sided heart failure caused by pulmonary hypertension. In COPD, chronic
hypoxemia causes pulmonary vasoconstriction, leading to increased pulmonary vascular resistance and
pulmonary hypertension. The right ventricle must work harder to pump blood against this increased
resistance, leading to right ventricular hypertrophy and eventually failure. While hypoxemia,
hypercapnia, and air trapping occur in COPD, cor pulmonale is directly caused by pulmonary
hypertension.
Question 8: A client develops disseminated intravascular coagulation (DIC) secondary to sepsis. Which
pathophysiological mechanism is responsible?
A) Excessive activation of the coagulation cascade
B) Deficiency of clotting factors due to liver failure
C) Immune-mediated destruction of platelets
D) Increased production of antithrombin III
Answer: A) Excessive activation of the coagulation cascade
Rationale: Disseminated intravascular coagulation (DIC) is characterized by widespread activation of the
coagulation cascade, leading to the formation of microvascular thrombi. This consumes clotting factors
and platelets, leading to bleeding. Sepsis triggers the release of inflammatory cytokines that activate the
(Latest) – Complete Exam 7 with
Verified Answers (2026 Edition)
Question 1: A client is diagnosed with systemic lupus erythematosus (SLE). Which pathophysiological
mechanism underlies this autoimmune disorder?
A) Type I hypersensitivity reaction mediated by IgE antibodies
B) Type II hypersensitivity reaction involving antibody-mediated cytotoxicity
C) Type III hypersensitivity reaction with immune complex deposition
D) Type IV hypersensitivity reaction mediated by T lymphocytes
Answer: C) Type III hypersensitivity reaction with immune complex deposition
Rationale: Systemic lupus erythematosus (SLE) is a Type III hypersensitivity reaction characterized by the
deposition of immune complexes (antigen-antibody complexes) in various tissues, including the kidneys,
skin, joints, and blood vessels. This deposition triggers inflammation and tissue damage. Type I reactions
involve IgE (allergies), Type II involves antibody-mediated cytotoxicity (autoimmune hemolytic anemia),
and Type IV involves T-cell mediated responses (contact dermatitis).
Question 2: A client with chronic kidney disease has developed anemia. Which pathophysiological
mechanism is most likely responsible?
A) Decreased production of erythropoietin by the kidneys
B) Increased destruction of red blood cells in the spleen
C) Vitamin B12 deficiency
D) Iron deficiency due to poor dietary intake
Answer: A) Decreased production of erythropoietin by the kidneys
Rationale: Erythropoietin is produced by the kidneys and stimulates red blood cell production in the bone
marrow. In chronic kidney disease, damaged kidneys produce less erythropoietin, leading to anemia. This
is called anemia of chronic disease or renal anemia. While iron deficiency, vitamin B12 deficiency, and
increased RBC destruction can also cause anemia, decreased erythropoietin production is the primary
mechanism in CKD.
Question 3: A client is admitted with acute pancreatitis. Which pathophysiological event initiates the
inflammatory process?
,A) Activation of pancreatic enzymes within the pancreas
B) Bile duct obstruction causing pancreatic duct hypertension
C) Ischemia of pancreatic tissue
D) Autoimmune destruction of pancreatic cells
Answer: A) Activation of pancreatic enzymes within the pancreas
Rationale: Acute pancreatitis is initiated by the premature activation of pancreatic enzymes (especially
trypsin) within the pancreas. This leads to autodigestion of pancreatic tissue, inflammation, and necrosis.
Bile duct obstruction, ischemia, and autoimmune processes can contribute to pancreatitis but are not the
primary initiating event. The activated enzymes cause damage to pancreatic cells and surrounding
tissues.
Question 4: A client with cirrhosis develops portal hypertension. Which complication is most directly
related to this pathophysiological change?
A) Hepatic encephalopathy
B) Ascites
C) Jaundice
D) Coagulopathy
Answer: B) Ascites
Rationale: Portal hypertension increases pressure in the portal venous system, leading to fluid shifting
into the peritoneal cavity and causing ascites. Hepatic encephalopathy results from the liver's inability to
detoxify ammonia. Jaundice results from impaired bilirubin metabolism. Coagulopathy results from
decreased production of clotting factors. While all are complications of cirrhosis, ascites is most directly
caused by portal hypertension.
Question 5: A client is diagnosed with type 2 diabetes mellitus. Which pathophysiological mechanism is
most characteristic of this condition?
A) Absolute deficiency of insulin production
B) Insulin resistance and relative insulin deficiency
C) Autoimmune destruction of pancreatic beta cells
D) Increased production of glucagon
Answer: B) Insulin resistance and relative insulin deficiency
Rationale: Type 2 diabetes mellitus is characterized by insulin resistance, where cells do not respond
effectively to insulin, and relative insulin deficiency, where the pancreas cannot produce enough insulin
to overcome the resistance. Type 1 diabetes is characterized by absolute insulin deficiency due to
autoimmune destruction of beta cells. Increased glucagon production can occur but is not the primary
mechanism.
, Question 6: A client with heart failure develops pulmonary edema. Which pathophysiological
mechanism is responsible?
A) Decreased cardiac output causing systemic vasoconstriction
B) Increased left ventricular pressure causing fluid backup into the lungs
C) Decreased renal perfusion causing fluid retention
D) Increased systemic vascular resistance
Answer: B) Increased left ventricular pressure causing fluid backup into the lungs
Rationale: In heart failure, the left ventricle cannot effectively pump blood forward, leading to increased
left ventricular pressure. This pressure is transmitted backward to the left atrium, pulmonary veins, and
pulmonary capillaries, causing fluid to leak into the alveoli and resulting in pulmonary edema. Decreased
cardiac output, renal hypoperfusion, and increased systemic vascular resistance are also present but are
not the direct cause of pulmonary edema.
Question 7: A client with chronic obstructive pulmonary disease (COPD) develops cor pulmonale. Which
pathophysiological change leads to this complication?
A) Decreased alveolar ventilation causing hypoxemia
B) Pulmonary hypertension causing right ventricular hypertrophy
C) Hypercapnia causing respiratory acidosis
D) Air trapping causing hyperinflation of the lungs
Answer: B) Pulmonary hypertension causing right ventricular hypertrophy
Rationale: Cor pulmonale is right-sided heart failure caused by pulmonary hypertension. In COPD, chronic
hypoxemia causes pulmonary vasoconstriction, leading to increased pulmonary vascular resistance and
pulmonary hypertension. The right ventricle must work harder to pump blood against this increased
resistance, leading to right ventricular hypertrophy and eventually failure. While hypoxemia,
hypercapnia, and air trapping occur in COPD, cor pulmonale is directly caused by pulmonary
hypertension.
Question 8: A client develops disseminated intravascular coagulation (DIC) secondary to sepsis. Which
pathophysiological mechanism is responsible?
A) Excessive activation of the coagulation cascade
B) Deficiency of clotting factors due to liver failure
C) Immune-mediated destruction of platelets
D) Increased production of antithrombin III
Answer: A) Excessive activation of the coagulation cascade
Rationale: Disseminated intravascular coagulation (DIC) is characterized by widespread activation of the
coagulation cascade, leading to the formation of microvascular thrombi. This consumes clotting factors
and platelets, leading to bleeding. Sepsis triggers the release of inflammatory cytokines that activate the
