NURSING PATHOPHYSIOLOGY FINAL EXAM COMPLETE STUDY
GUIDE & COMPREHENSIVE FINAL ACTUAL EXAM | FREQUENTLY
TESTED QUESTIONS WITH DETAILED ANSWERS | GUARANTEED PASS
| GRADED A+ | LATEST UPDATE
Question 1
What is the primary mechanism of cellular injury in hypoxia?
A) Increased ATP production
B) Decreased oxidative phosphorylation and ATP depletion
C) Enhanced protein synthesis
D) Increased DNA repair
Answer
Answer: B
Rationale
Hypoxia reduces oxygen availability for oxidative phosphorylation in mitochondria, decreasing ATP
production. ATP depletion impairs sodium-potassium pump function, causing cellular swelling, and
activates anaerobic metabolism, leading to lactic acidosis and further cellular damage.
Question 2
Which type of cell death is characterized by inflammation and cell swelling?
A) Apoptosis
B) Necrosis
C) Autophagy
D) Senescence
Answer
Answer: B
Rationale
Necrosis is unregulated cell death resulting from severe injury, characterized by cell swelling,
membrane rupture, and inflammation due to release of cellular contents that trigger an immune
,response. Apoptosis is programmed and does not cause inflammation.
Question 3
What is the primary electrolyte disturbance in hyperkalemia?
A) Serum potassium greater than 5.0 mEq/L
B) Serum potassium less than 3.5 mEq/L
C) Serum sodium greater than 145 mEq/L
D) Serum sodium less than 135 mEq/L
Answer
Answer: A
Rationale
Hyperkalemia is defined as serum potassium above 5.0 mEq/L. It can cause life-threatening cardiac
arrhythmias, including peaked T waves, widened QRS, and ventricular fibrillation.
Question 4
Which acid-base imbalance is characterized by decreased pH and increased PaCO2?
A) Metabolic acidosis
B) Metabolic alkalosis
C) Respiratory acidosis
D) Respiratory alkalosis
Answer
Answer: C
Rationale
Respiratory acidosis occurs when alveolar hypoventilation causes CO2 retention, increasing PaCO2
and decreasing pH. Causes include COPD, respiratory depression, and airway obstruction.
Question 5
What is the primary cause of metabolic acidosis?
2
,A) Increased bicarbonate
B) Decreased bicarbonate or increased acid
C) Increased CO2
D) Decreased CO2
Answer
Answer: B
Rationale
Metabolic acidosis results from decreased bicarbonate (bicarbonate loss) or increased acid production
(ketoacidosis, lactic acidosis, renal failure). Compensation occurs through hyperventilation to blow off
CO2.
Question 6
What is the hallmark of inflammation?
A) Vasoconstriction
B) Vasodilation and increased vascular permeability
C) Decreased blood flow
D) Reduced white blood cell activity
Answer
Answer: B
Rationale
Inflammation is characterized by vasodilation (causing redness and heat) and increased vascular
permeability (causing swelling). These changes allow immune cells and mediators to reach the site of
injury.
Question 7
Which cell is the first responder in acute inflammation?
A) Macrophage
B) Neutrophil
C) Lymphocyte
D) Eosinophil
3
, Answer
Answer: B
Rationale
Neutrophils are the first leukocytes to arrive at the site of acute inflammation, typically within minutes
to hours. They phagocytose pathogens and debris and release inflammatory mediators.
Question 8
What is the primary function of histamine in inflammation?
A) Vasoconstriction
B) Vasodilation and increased permeability
C) Pain relief
D) Clotting
Answer
Answer: B
Rationale
Histamine, released by mast cells, causes vasodilation and increased capillary permeability, leading to
redness, heat, and swelling. It also stimulates pain receptors.
Question 9
What is the difference between transudate and exudate?
A) Transudate is protein-rich; exudate is protein-poor
B) Transudate is protein-poor; exudate is protein-rich
C) Both are protein-rich
D) Both are protein-poor
Answer
Answer: B
Rationale
Transudate results from increased hydrostatic pressure or decreased oncotic pressure and is low in
4
GUIDE & COMPREHENSIVE FINAL ACTUAL EXAM | FREQUENTLY
TESTED QUESTIONS WITH DETAILED ANSWERS | GUARANTEED PASS
| GRADED A+ | LATEST UPDATE
Question 1
What is the primary mechanism of cellular injury in hypoxia?
A) Increased ATP production
B) Decreased oxidative phosphorylation and ATP depletion
C) Enhanced protein synthesis
D) Increased DNA repair
Answer
Answer: B
Rationale
Hypoxia reduces oxygen availability for oxidative phosphorylation in mitochondria, decreasing ATP
production. ATP depletion impairs sodium-potassium pump function, causing cellular swelling, and
activates anaerobic metabolism, leading to lactic acidosis and further cellular damage.
Question 2
Which type of cell death is characterized by inflammation and cell swelling?
A) Apoptosis
B) Necrosis
C) Autophagy
D) Senescence
Answer
Answer: B
Rationale
Necrosis is unregulated cell death resulting from severe injury, characterized by cell swelling,
membrane rupture, and inflammation due to release of cellular contents that trigger an immune
,response. Apoptosis is programmed and does not cause inflammation.
Question 3
What is the primary electrolyte disturbance in hyperkalemia?
A) Serum potassium greater than 5.0 mEq/L
B) Serum potassium less than 3.5 mEq/L
C) Serum sodium greater than 145 mEq/L
D) Serum sodium less than 135 mEq/L
Answer
Answer: A
Rationale
Hyperkalemia is defined as serum potassium above 5.0 mEq/L. It can cause life-threatening cardiac
arrhythmias, including peaked T waves, widened QRS, and ventricular fibrillation.
Question 4
Which acid-base imbalance is characterized by decreased pH and increased PaCO2?
A) Metabolic acidosis
B) Metabolic alkalosis
C) Respiratory acidosis
D) Respiratory alkalosis
Answer
Answer: C
Rationale
Respiratory acidosis occurs when alveolar hypoventilation causes CO2 retention, increasing PaCO2
and decreasing pH. Causes include COPD, respiratory depression, and airway obstruction.
Question 5
What is the primary cause of metabolic acidosis?
2
,A) Increased bicarbonate
B) Decreased bicarbonate or increased acid
C) Increased CO2
D) Decreased CO2
Answer
Answer: B
Rationale
Metabolic acidosis results from decreased bicarbonate (bicarbonate loss) or increased acid production
(ketoacidosis, lactic acidosis, renal failure). Compensation occurs through hyperventilation to blow off
CO2.
Question 6
What is the hallmark of inflammation?
A) Vasoconstriction
B) Vasodilation and increased vascular permeability
C) Decreased blood flow
D) Reduced white blood cell activity
Answer
Answer: B
Rationale
Inflammation is characterized by vasodilation (causing redness and heat) and increased vascular
permeability (causing swelling). These changes allow immune cells and mediators to reach the site of
injury.
Question 7
Which cell is the first responder in acute inflammation?
A) Macrophage
B) Neutrophil
C) Lymphocyte
D) Eosinophil
3
, Answer
Answer: B
Rationale
Neutrophils are the first leukocytes to arrive at the site of acute inflammation, typically within minutes
to hours. They phagocytose pathogens and debris and release inflammatory mediators.
Question 8
What is the primary function of histamine in inflammation?
A) Vasoconstriction
B) Vasodilation and increased permeability
C) Pain relief
D) Clotting
Answer
Answer: B
Rationale
Histamine, released by mast cells, causes vasodilation and increased capillary permeability, leading to
redness, heat, and swelling. It also stimulates pain receptors.
Question 9
What is the difference between transudate and exudate?
A) Transudate is protein-rich; exudate is protein-poor
B) Transudate is protein-poor; exudate is protein-rich
C) Both are protein-rich
D) Both are protein-poor
Answer
Answer: B
Rationale
Transudate results from increased hydrostatic pressure or decreased oncotic pressure and is low in
4
