NURS 6501N Final Exam V1 | NURS 6501N
Advanced Pathophysiology | Actual Q&A
with Rationale (NURS6501N Final Exam) |
Walden University
1. Which cellular adaptation is characterized by a decrease in cell size in response to a
reduced workload or diminished blood supply?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
Answer: D
Rationale: Atrophy refers to a decrease in cellular size, which subsequently leads to a
reduction in the mass of the tissue or organ. This process can occur due to factors such as
aging, disuse, or a lack of hormonal stimulation. When cells atrophy, they enter a survival
mode where they consume less oxygen and perform fewer specialized functions.
2. A patient with chronic hypertension is likely to develop which of the following cellular
adaptations in the left ventricle?
A. Dysplasia
B. Hyperplasia
,C. Hypertrophy
D. Metaplasia
Answer: C
Rationale: Left ventricular hypertrophy occurs as a compensatory mechanism to the
increased afterload caused by systemic hypertension. The cardiac myocytes increase in size
to generate more force, although this eventually leads to decreased compliance and
potential heart failure. This is considered a pathological adaptation because the underlying
cause is an abnormal disease state.
3. Which electrolyte imbalance is most commonly associated with the development of tall,
peaked T-waves on an electrocardiogram?
A. Hypocalcemia
B. Hyponatremia
C. Hyperkalemia
D. Hypermagnesemia
Answer: C
Rationale: Hyperkalemia alters the membrane potential of cardiac cells, leading to more
rapid repolarization which manifests as peaked T-waves. As potassium levels continue to
rise, the QRS complex may widen and eventually lead to ventricular fibrillation or asystole.
Immediate clinical intervention is required to shift potassium back into the cells or enhance
its excretion.
,4. In the pathogenesis of Type 1 Diabetes Mellitus, which mechanism is primarily responsible
for the destruction of pancreatic beta cells?
A. Autoimmune-mediated destruction
B. Insulin resistance
C. Amyloid deposition
D. Viral infection of the liver
Answer: A
Rationale: Type 1 Diabetes is characterized by an absolute insulin deficiency resulting
from the T-cell mediated destruction of beta cells in the islets of Langerhans. This
autoimmune process typically begins in childhood or adolescence and is often triggered by
environmental factors in genetically susceptible individuals. Without insulin, the body
cannot transport glucose into cells, leading to hyperglycemia and ketosis.
5. A patient presents with rapid, deep respirations known as Kussmaul breathing. This is a
compensatory response to which acid-base imbalance?
A. Respiratory Alkalosis
B. Respiratory Acidosis
C. Metabolic Acidosis
D. Metabolic Alkalosis
Answer: C
, Rationale: Metabolic acidosis involves a decrease in bicarbonate or an increase in non-
volatile acids, lowering the blood pH. The body attempts to compensate by increasing the
respiratory rate and depth to blow off carbon dioxide, which is an acidic gas. Kussmaul
breathing is a classic sign of this respiratory compensation, frequently seen in diabetic
ketoacidosis.
6. Which of the following is the primary pathophysiological mechanism behind the
development of pulmonary edema in left-sided heart failure?
A. Decreased capillary oncotic pressure
B. Lymphatic obstruction
C. Increased capillary permeability
D. Increased capillary hydrostatic pressure
Answer: D
Rationale: When the left ventricle fails to pump effectively, blood backs up into the left
atrium and pulmonary veins. This increase in pulmonary venous pressure raises the
hydrostatic pressure in the pulmonary capillaries, forcing fluid into the alveoli. The
resulting pulmonary edema severely impairs gas exchange and causes respiratory distress.
7. A child is diagnosed with Down Syndrome. Which genetic abnormality is the most common
cause of this condition?
A. Trisomy 21
B. Monosomy X
Advanced Pathophysiology | Actual Q&A
with Rationale (NURS6501N Final Exam) |
Walden University
1. Which cellular adaptation is characterized by a decrease in cell size in response to a
reduced workload or diminished blood supply?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
Answer: D
Rationale: Atrophy refers to a decrease in cellular size, which subsequently leads to a
reduction in the mass of the tissue or organ. This process can occur due to factors such as
aging, disuse, or a lack of hormonal stimulation. When cells atrophy, they enter a survival
mode where they consume less oxygen and perform fewer specialized functions.
2. A patient with chronic hypertension is likely to develop which of the following cellular
adaptations in the left ventricle?
A. Dysplasia
B. Hyperplasia
,C. Hypertrophy
D. Metaplasia
Answer: C
Rationale: Left ventricular hypertrophy occurs as a compensatory mechanism to the
increased afterload caused by systemic hypertension. The cardiac myocytes increase in size
to generate more force, although this eventually leads to decreased compliance and
potential heart failure. This is considered a pathological adaptation because the underlying
cause is an abnormal disease state.
3. Which electrolyte imbalance is most commonly associated with the development of tall,
peaked T-waves on an electrocardiogram?
A. Hypocalcemia
B. Hyponatremia
C. Hyperkalemia
D. Hypermagnesemia
Answer: C
Rationale: Hyperkalemia alters the membrane potential of cardiac cells, leading to more
rapid repolarization which manifests as peaked T-waves. As potassium levels continue to
rise, the QRS complex may widen and eventually lead to ventricular fibrillation or asystole.
Immediate clinical intervention is required to shift potassium back into the cells or enhance
its excretion.
,4. In the pathogenesis of Type 1 Diabetes Mellitus, which mechanism is primarily responsible
for the destruction of pancreatic beta cells?
A. Autoimmune-mediated destruction
B. Insulin resistance
C. Amyloid deposition
D. Viral infection of the liver
Answer: A
Rationale: Type 1 Diabetes is characterized by an absolute insulin deficiency resulting
from the T-cell mediated destruction of beta cells in the islets of Langerhans. This
autoimmune process typically begins in childhood or adolescence and is often triggered by
environmental factors in genetically susceptible individuals. Without insulin, the body
cannot transport glucose into cells, leading to hyperglycemia and ketosis.
5. A patient presents with rapid, deep respirations known as Kussmaul breathing. This is a
compensatory response to which acid-base imbalance?
A. Respiratory Alkalosis
B. Respiratory Acidosis
C. Metabolic Acidosis
D. Metabolic Alkalosis
Answer: C
, Rationale: Metabolic acidosis involves a decrease in bicarbonate or an increase in non-
volatile acids, lowering the blood pH. The body attempts to compensate by increasing the
respiratory rate and depth to blow off carbon dioxide, which is an acidic gas. Kussmaul
breathing is a classic sign of this respiratory compensation, frequently seen in diabetic
ketoacidosis.
6. Which of the following is the primary pathophysiological mechanism behind the
development of pulmonary edema in left-sided heart failure?
A. Decreased capillary oncotic pressure
B. Lymphatic obstruction
C. Increased capillary permeability
D. Increased capillary hydrostatic pressure
Answer: D
Rationale: When the left ventricle fails to pump effectively, blood backs up into the left
atrium and pulmonary veins. This increase in pulmonary venous pressure raises the
hydrostatic pressure in the pulmonary capillaries, forcing fluid into the alveoli. The
resulting pulmonary edema severely impairs gas exchange and causes respiratory distress.
7. A child is diagnosed with Down Syndrome. Which genetic abnormality is the most common
cause of this condition?
A. Trisomy 21
B. Monosomy X
