SCI225 Pathophysiology Midterm Exam - Nightingale… 2026/2027 • Verified • Assured Grade A+
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Midterm Exam - Nightingale Standard
Prep 2026/2027 UPDATE |Nightingale
ACTUAL EXAM QUESTIONS & VERIFIED ANSWERS
with Clear, Detailed Rationales
Document Type: Exam (Elaborations) / Study Guide
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Rationales
Grade: A+ Assured
ASSURED GRADE A+
Exam (Elaborations) • Detailed Rationales Page 1
,SCI225 Pathophysiology Midterm Exam - Nightingale… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another, often less differentiated, cell type?
A. Hyperplasia
B. Atrophy
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell by another, such as the change
in bronchial lining from ciliated columnar cells to stratified squamous cells in smokers. Clear
understanding of this concept improves both test performance and everyday clinical judgment.
Practice applying it to short case scenarios to lock the idea in place. This knowledge supports safe
care and helps the nurse teach the client and family clearly and simply. Clear teaching improves
cooperation and reduces anxiety.
2. A patient is experiencing respiratory acidosis. Which compensatory mechanism would the
kidneys most likely employ?
A. Excreting bicarbonate (HCO3-)
B. Retaining hydrogen ions (H+)
C. Decreasing the rate of breathing
D. Conserving bicarbonate (HCO3-) and excreting H+
Answer: D
Rationale: In respiratory acidosis, the kidneys compensate by reabsorbing bicarbonate to buffer the
excess acid and excreting hydrogen ions into the urine. This is important because the nurse must
choose the action that keeps the client safest while still meeting their basic needs. Always think about
safety first when answering these questions. This knowledge supports safe care and helps the nurse
teach the client and family clearly and simply. Clear teaching improves cooperation and reduces
anxiety.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Midterm Exam - Nightingale… 2026/2027 • Verified • Assured Grade A+
3. Which electrolyte imbalance is most commonly associated with tall, peaked T-waves on
an EKG?
A. Hypokalemia
B. Hypercalcemia
C. Hypernatremia
D. Hyperkalemia
Answer: D
Rationale: Hyperkalemia causes changes in ventricular repolarization, which manifests as narrowed
and peaked T-waves on the EKG. This is important because the nurse must choose the action that
keeps the client safest while still meeting their basic needs. Always think about safety first when
answering these questions. Remembering this point will help you decide the best nursing action when
similar questions appear on the exam. Link the answer to the client’s current condition and risk level.
4. What is the primary mechanism behind Type I hypersensitivity reactions?
A. IgE binding to mast cells and basophils
B. T-cell mediated cytotoxicity
C. Immune complex deposition
D. Antibody-dependent cell-mediated cytotoxicity (ADCC)
Answer: A
Rationale: Type I hypersensitivity is IgE-mediated. Allergens bind to IgE already attached to mast
cells, triggering degranulation and histamine release. In practice, this guides the nurse to set priorities
and protect the client from harm. Safety, nutrition, and clear communication are frequent priorities.
Understanding this helps the nurse notice early warning signs and act before the problem gets worse.
Early action often prevents bigger complications for the client.
Exam (Elaborations) • Detailed Rationales Page 3
✓ VERIFIED • 2026/2027 UPDATE • 100% ACCURATE
SCI225 Pathophysiology Midterm Exam - Nightingale Standard
Prep 2026/2027 UPDATE |Nightingale
ACTUAL EXAM QUESTIONS & VERIFIED ANSWERS
with Clear, Detailed Rationales
Document Type: Exam (Elaborations) / Study Guide
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Rationales
Grade: A+ Assured
ASSURED GRADE A+
Exam (Elaborations) • Detailed Rationales Page 1
,SCI225 Pathophysiology Midterm Exam - Nightingale… 2026/2027 • Verified • Assured Grade A+
Questions & Verified Answers
1. Which cellular adaptation is characterized by the replacement of one mature cell type by
another, often less differentiated, cell type?
A. Hyperplasia
B. Atrophy
C. Dysplasia
D. Metaplasia
Answer: D
Rationale: Metaplasia is the reversible replacement of one mature cell by another, such as the change
in bronchial lining from ciliated columnar cells to stratified squamous cells in smokers. Clear
understanding of this concept improves both test performance and everyday clinical judgment.
Practice applying it to short case scenarios to lock the idea in place. This knowledge supports safe
care and helps the nurse teach the client and family clearly and simply. Clear teaching improves
cooperation and reduces anxiety.
2. A patient is experiencing respiratory acidosis. Which compensatory mechanism would the
kidneys most likely employ?
A. Excreting bicarbonate (HCO3-)
B. Retaining hydrogen ions (H+)
C. Decreasing the rate of breathing
D. Conserving bicarbonate (HCO3-) and excreting H+
Answer: D
Rationale: In respiratory acidosis, the kidneys compensate by reabsorbing bicarbonate to buffer the
excess acid and excreting hydrogen ions into the urine. This is important because the nurse must
choose the action that keeps the client safest while still meeting their basic needs. Always think about
safety first when answering these questions. This knowledge supports safe care and helps the nurse
teach the client and family clearly and simply. Clear teaching improves cooperation and reduces
anxiety.
Exam (Elaborations) • Detailed Rationales Page 2
, SCI225 Pathophysiology Midterm Exam - Nightingale… 2026/2027 • Verified • Assured Grade A+
3. Which electrolyte imbalance is most commonly associated with tall, peaked T-waves on
an EKG?
A. Hypokalemia
B. Hypercalcemia
C. Hypernatremia
D. Hyperkalemia
Answer: D
Rationale: Hyperkalemia causes changes in ventricular repolarization, which manifests as narrowed
and peaked T-waves on the EKG. This is important because the nurse must choose the action that
keeps the client safest while still meeting their basic needs. Always think about safety first when
answering these questions. Remembering this point will help you decide the best nursing action when
similar questions appear on the exam. Link the answer to the client’s current condition and risk level.
4. What is the primary mechanism behind Type I hypersensitivity reactions?
A. IgE binding to mast cells and basophils
B. T-cell mediated cytotoxicity
C. Immune complex deposition
D. Antibody-dependent cell-mediated cytotoxicity (ADCC)
Answer: A
Rationale: Type I hypersensitivity is IgE-mediated. Allergens bind to IgE already attached to mast
cells, triggering degranulation and histamine release. In practice, this guides the nurse to set priorities
and protect the client from harm. Safety, nutrition, and clear communication are frequent priorities.
Understanding this helps the nurse notice early warning signs and act before the problem gets worse.
Early action often prevents bigger complications for the client.
Exam (Elaborations) • Detailed Rationales Page 3
