NUR 546/NUR546 Final Exam V2 |
Advanced Pathophysiology Q&A with
Rationale | William Paterson University
1. A patient is diagnosed with Right-sided heart failure. Which clinical manifestation should
the nurse expect to find during the assessment?
A. Peripheral edema and jugular venous distention
B. Pulmonary edema
C. Dyspnea on exertion
D. Crackles in the lung bases
Answer: A
Rationale: Right-sided heart failure leads to a backup of blood into the systemic venous
circulation. This results in clinical signs such as peripheral edema, hepatomegaly, and
jugular venous distention. Pulmonary symptoms like crackles and dyspnea are typically
associated with left-sided heart failure.
2. Which electrolyte imbalance is most commonly associated with the development of
Torsades de Pointes?
A. Hypernatremia
B. Hypomagnesemia
C. Hypercalcemia
,D. Hypochloremia
Answer: B
Rationale: Hypomagnesemia is a well-known risk factor for the prolongation of the QT
interval. This prolongation can lead to a specific type of polymorphic ventricular
tachycardia known as Torsades de Pointes. Correcting magnesium levels is a critical
intervention in the management of this cardiac emergency.
3. In the pathophysiology of Type 1 Diabetes Mellitus, what is the primary cause of insulin
deficiency?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Excessive glucagon secretion from alpha cells
D. Chronic pancreatitis leading to fibrosis
Answer: A
Rationale: Type 1 Diabetes Mellitus is characterized by an absolute deficiency of insulin.
This occurs because the body’s immune system mistakenly attacks and destroys the
insulin-producing beta cells in the Islets of Langerhans. Consequently, patients require
exogenous insulin to sustain life and prevent ketoacidosis.
4. A patient with Chronic Kidney Disease (CKD) presents with a hemoglobin of 8.2 g/dL. What
is the most likely cause of this anemia?
A. Vitamin B12 deficiency
, B. Reduced production of erythropoietin
C. Chronic occult gastrointestinal bleeding
D. Iron toxicity
Answer: B
Rationale: The kidneys are responsible for producing erythropoietin, a hormone that
stimulates red blood cell production in the bone marrow. As renal function declines in CKD,
the production of this hormone decreases significantly. This results in a normocytic,
normochromic anemia that often requires treatment with erythropoiesis-stimulating
agents.
5. What is the primary pathophysiological mechanism behind the development of
emphysema?
A. Permanent enlargement of gas-exchange airways with alveolar wall destruction
B. Hypertrophy of mucus-secreting glands
C. Reversible bronchospasm and airway inflammation
D. Infection and consolidation of the lung parenchyma
Answer: A
Rationale: Emphysema involves the destruction of alveolar walls and the loss of elastic
recoil in the lungs. This leads to the permanent enlargement of air spaces distal to the
Advanced Pathophysiology Q&A with
Rationale | William Paterson University
1. A patient is diagnosed with Right-sided heart failure. Which clinical manifestation should
the nurse expect to find during the assessment?
A. Peripheral edema and jugular venous distention
B. Pulmonary edema
C. Dyspnea on exertion
D. Crackles in the lung bases
Answer: A
Rationale: Right-sided heart failure leads to a backup of blood into the systemic venous
circulation. This results in clinical signs such as peripheral edema, hepatomegaly, and
jugular venous distention. Pulmonary symptoms like crackles and dyspnea are typically
associated with left-sided heart failure.
2. Which electrolyte imbalance is most commonly associated with the development of
Torsades de Pointes?
A. Hypernatremia
B. Hypomagnesemia
C. Hypercalcemia
,D. Hypochloremia
Answer: B
Rationale: Hypomagnesemia is a well-known risk factor for the prolongation of the QT
interval. This prolongation can lead to a specific type of polymorphic ventricular
tachycardia known as Torsades de Pointes. Correcting magnesium levels is a critical
intervention in the management of this cardiac emergency.
3. In the pathophysiology of Type 1 Diabetes Mellitus, what is the primary cause of insulin
deficiency?
A. Autoimmune destruction of pancreatic beta cells
B. Insulin resistance in peripheral tissues
C. Excessive glucagon secretion from alpha cells
D. Chronic pancreatitis leading to fibrosis
Answer: A
Rationale: Type 1 Diabetes Mellitus is characterized by an absolute deficiency of insulin.
This occurs because the body’s immune system mistakenly attacks and destroys the
insulin-producing beta cells in the Islets of Langerhans. Consequently, patients require
exogenous insulin to sustain life and prevent ketoacidosis.
4. A patient with Chronic Kidney Disease (CKD) presents with a hemoglobin of 8.2 g/dL. What
is the most likely cause of this anemia?
A. Vitamin B12 deficiency
, B. Reduced production of erythropoietin
C. Chronic occult gastrointestinal bleeding
D. Iron toxicity
Answer: B
Rationale: The kidneys are responsible for producing erythropoietin, a hormone that
stimulates red blood cell production in the bone marrow. As renal function declines in CKD,
the production of this hormone decreases significantly. This results in a normocytic,
normochromic anemia that often requires treatment with erythropoiesis-stimulating
agents.
5. What is the primary pathophysiological mechanism behind the development of
emphysema?
A. Permanent enlargement of gas-exchange airways with alveolar wall destruction
B. Hypertrophy of mucus-secreting glands
C. Reversible bronchospasm and airway inflammation
D. Infection and consolidation of the lung parenchyma
Answer: A
Rationale: Emphysema involves the destruction of alveolar walls and the loss of elastic
recoil in the lungs. This leads to the permanent enlargement of air spaces distal to the
