SHS 311 Final Exam | Complete Practice Questions, Correct
Answers & Detailed Rationales (2026/2027)
Question 1
A client is diagnosed with metaplasia in the bronchial epithelium. The
nurse recognizes that this cellular adaptation:
• A. Is an irreversible process indicating imminent malignancy.
• B. Represents the replacement of one mature cell type with
another, often in response to chronic irritation.
• C. Results in a significant increase in the rate of DNA replication
and cell division.
• D. Is the direct result of a lack of oxygen to the bronchial tissue.
Correct Answer: B. Represents the replacement of one mature cell type
with another, often in response to chronic irritation.
Detailed Rationale: Metaplasia is a reversible cellular adaptation where
one adult cell type is replaced by another, usually better suited to
survive a stressor (e.g., columnar epithelium changing to squamous
epithelium in smokers).
Question 2
Which mechanism best describes the pathophysiology of a Type I
hypersensitivity reaction?
• A. Immune complex deposition in small blood vessels triggering
complement activation.
, • B. T-cell mediated delayed hypersensitivity resulting in contact
dermatitis.
• C. IgE-mediated release of histamine and inflammatory mediators
from mast cells and basophils.
• D. IgG or IgM antibodies directed against cell-surface antigens
causing cell lysis.
Correct Answer: C. IgE-mediated release of histamine and inflammatory
mediators from mast cells and basophils.
Detailed Rationale: Type I hypersensitivity is an immediate allergic
reaction mediated by IgE antibodies, which bind to mast cells and
basophils, causing degranulation and release of histamine, leukotrienes,
and prostaglandins.
Question 3
A patient presents with severe dehydration and hypernatremia. Which
fluid shift occurs primarily between the intracellular and extracellular
compartments?
• A. Water shifts from the intracellular fluid (ICF) into the
extracellular fluid (ECF) due to increased ECF osmolality.
• B. Water shifts from the extracellular fluid (ECF) into the
intracellular fluid (ICF) due to decreased ECF osmolality.
• C. Sodium shifts freely into cells, drawing water along with it to
equalize tonicity.
• D. Plasma proteins shift into the interstitial space, pulling water
into the tissues.
,Correct Answer: A. Water shifts from the intracellular fluid (ICF) into the
extracellular fluid (ECF) due to increased ECF osmolality.
Detailed Rationale: In hypernatremia, ECF osmolality rises, creating an
osmotic gradient that draws water out of the intracellular space into the
ECF to equalize concentration, leading to cellular dehydration.
Question 4
Which of the following alterations in arterial blood gas (ABG) values
indicates uncompensated metabolic acidosis?
• A. Decreased pH, decreased HCO3-, normal PaCO2
• B. Increased pH, increased HCO3-, increased PaCO2
• C. Decreased pH, normal HCO3-, increased PaCO2
• D. Increased pH, decreased HCO3-, decreased PaCO2
Correct Answer: A. Decreased pH, decreased HCO3-, normal PaCO2
Detailed Rationale: Metabolic acidosis is characterized by a primary
decrease in bicarbonate (HCO3-) resulting in a decreased pH. In an
uncompensated state, the respiratory system has not yet altered the
PaCO2 to compensate.
Question 5
What is the primary pathophysiological hallmark of atherosclerosis?
• A. Vasospasm of large muscular arteries leading to transient
ischemia.
• B. Chronic inflammation of the arterial wall with accumulation of
lipid-laden macrophages (foam cells) in the intima.
, • C. Necrosis of the tunica media due to infectious arteritis.
• D. Autoimmune destruction of endothelial tight junctions causing
aneurysmal dilation.
Correct Answer: B. Chronic inflammation of the arterial wall with
accumulation of lipid-laden macrophages (foam cells) in the intima.
Detailed Rationale: Atherosclerosis begins with endothelial injury,
followed by LDL deposition and oxidation, monocyte infiltration into the
intima becoming macrophages that ingest lipids to form foam cells,
eventually creating fibrous plaques.
Question 6
A client is diagnosed with left-sided heart failure. Which clinical
manifestation is the nurse most likely to assess?
• A. Peripheral pitting edema and jugular venous distention
• B. Ascites and hepatosplenomegaly
• C. Dyspnea, orthopnea, and crackles in lung bases
• D. Weight gain from systemic fluid retention
Correct Answer: C. Dyspnea, orthopnea, and crackles in lung bases
Detailed Rationale: Left-sided heart failure causes blood to back up into
the pulmonary circulation, increasing pulmonary capillary hydrostatic
pressure and leading to pulmonary congestion, dyspnea, orthopnea,
and crackles.
Question 7
Which pathophysiological process characterizes chronic bronchitis?
Answers & Detailed Rationales (2026/2027)
Question 1
A client is diagnosed with metaplasia in the bronchial epithelium. The
nurse recognizes that this cellular adaptation:
• A. Is an irreversible process indicating imminent malignancy.
• B. Represents the replacement of one mature cell type with
another, often in response to chronic irritation.
• C. Results in a significant increase in the rate of DNA replication
and cell division.
• D. Is the direct result of a lack of oxygen to the bronchial tissue.
Correct Answer: B. Represents the replacement of one mature cell type
with another, often in response to chronic irritation.
Detailed Rationale: Metaplasia is a reversible cellular adaptation where
one adult cell type is replaced by another, usually better suited to
survive a stressor (e.g., columnar epithelium changing to squamous
epithelium in smokers).
Question 2
Which mechanism best describes the pathophysiology of a Type I
hypersensitivity reaction?
• A. Immune complex deposition in small blood vessels triggering
complement activation.
, • B. T-cell mediated delayed hypersensitivity resulting in contact
dermatitis.
• C. IgE-mediated release of histamine and inflammatory mediators
from mast cells and basophils.
• D. IgG or IgM antibodies directed against cell-surface antigens
causing cell lysis.
Correct Answer: C. IgE-mediated release of histamine and inflammatory
mediators from mast cells and basophils.
Detailed Rationale: Type I hypersensitivity is an immediate allergic
reaction mediated by IgE antibodies, which bind to mast cells and
basophils, causing degranulation and release of histamine, leukotrienes,
and prostaglandins.
Question 3
A patient presents with severe dehydration and hypernatremia. Which
fluid shift occurs primarily between the intracellular and extracellular
compartments?
• A. Water shifts from the intracellular fluid (ICF) into the
extracellular fluid (ECF) due to increased ECF osmolality.
• B. Water shifts from the extracellular fluid (ECF) into the
intracellular fluid (ICF) due to decreased ECF osmolality.
• C. Sodium shifts freely into cells, drawing water along with it to
equalize tonicity.
• D. Plasma proteins shift into the interstitial space, pulling water
into the tissues.
,Correct Answer: A. Water shifts from the intracellular fluid (ICF) into the
extracellular fluid (ECF) due to increased ECF osmolality.
Detailed Rationale: In hypernatremia, ECF osmolality rises, creating an
osmotic gradient that draws water out of the intracellular space into the
ECF to equalize concentration, leading to cellular dehydration.
Question 4
Which of the following alterations in arterial blood gas (ABG) values
indicates uncompensated metabolic acidosis?
• A. Decreased pH, decreased HCO3-, normal PaCO2
• B. Increased pH, increased HCO3-, increased PaCO2
• C. Decreased pH, normal HCO3-, increased PaCO2
• D. Increased pH, decreased HCO3-, decreased PaCO2
Correct Answer: A. Decreased pH, decreased HCO3-, normal PaCO2
Detailed Rationale: Metabolic acidosis is characterized by a primary
decrease in bicarbonate (HCO3-) resulting in a decreased pH. In an
uncompensated state, the respiratory system has not yet altered the
PaCO2 to compensate.
Question 5
What is the primary pathophysiological hallmark of atherosclerosis?
• A. Vasospasm of large muscular arteries leading to transient
ischemia.
• B. Chronic inflammation of the arterial wall with accumulation of
lipid-laden macrophages (foam cells) in the intima.
, • C. Necrosis of the tunica media due to infectious arteritis.
• D. Autoimmune destruction of endothelial tight junctions causing
aneurysmal dilation.
Correct Answer: B. Chronic inflammation of the arterial wall with
accumulation of lipid-laden macrophages (foam cells) in the intima.
Detailed Rationale: Atherosclerosis begins with endothelial injury,
followed by LDL deposition and oxidation, monocyte infiltration into the
intima becoming macrophages that ingest lipids to form foam cells,
eventually creating fibrous plaques.
Question 6
A client is diagnosed with left-sided heart failure. Which clinical
manifestation is the nurse most likely to assess?
• A. Peripheral pitting edema and jugular venous distention
• B. Ascites and hepatosplenomegaly
• C. Dyspnea, orthopnea, and crackles in lung bases
• D. Weight gain from systemic fluid retention
Correct Answer: C. Dyspnea, orthopnea, and crackles in lung bases
Detailed Rationale: Left-sided heart failure causes blood to back up into
the pulmonary circulation, increasing pulmonary capillary hydrostatic
pressure and leading to pulmonary congestion, dyspnea, orthopnea,
and crackles.
Question 7
Which pathophysiological process characterizes chronic bronchitis?
