BSN 246 PATHOPHYSIOLOGY
COMPREHENSIVE EXAM STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS
|100% CORRECT| GRADE A+
NIGHTINGALE
1. In the context of Cardiogenic Shock, which hemodynamic parameter is most
characteristically increased?
A. Pulmonary Artery Wedge Pressure (PAWP)
B. Cardiac Index
C. Mixed Venous Oxygen Saturation (SvO2)
D. Mean Arterial Pressure (MAP)
Answer: A
Conceptual Explanation: In cardiogenic shock, the heart fails to pump effectively, leading
to blood backing up into the pulmonary circulation, which increases the PAWP. Cardiac
index, SvO2, and MAP typically decrease.
2. Which of the following describes the primary pathophysiology of Type II Hypersensitivity
reactions?
A. IgE-mediated mast cell degranulation
,B. Immune complex deposition in tissues
C. Antibody-mediated cell destruction or dysfunction
D. T-cell mediated delayed response
Answer: C
Conceptual Explanation: Type II hypersensitivity involves IgG or IgM antibodies binding
to antigens on cell surfaces, leading to cell lysis (e.g., hemolytic transfusion reactions).
3. A patient with Chronic Kidney Disease (CKD) presents with a high serum phosphorus level.
What is the compensatory mechanism that leads to secondary hyperparathyroidism?
A. Excessive Vitamin D activation by the kidneys
B. Increased renal excretion of calcium
C. Decreased production of Erythropoietin
D. Hypocalcemia resulting from hyperphosphatemia
Answer: D
Conceptual Explanation: High phosphorus levels bind with calcium, lowering serum
calcium levels. The parathyroid glands respond to hypocalcemia by secreting PTH to pull
calcium from the bones.
4. What is the hallmark finding on an EKG for a patient experiencing Hyperkalemia?
A. Prominent U waves
B. Tall, peaked T waves
, C. Prolonged QT interval
D. ST-segment depression
Answer: B
Conceptual Explanation: Tall, peaked T waves are one of the earliest signs of
hyperkalemia. As levels rise, the PR interval prolongs and the QRS widens.
5. Which electrolyte imbalance is a patient most at risk for when experiencing Syndrome of
Inappropriate Antidiuretic Hormone (SIADH)?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hyponatremia
Answer: D
Conceptual Explanation: SIADH causes excessive water retention, which dilutes the
serum sodium, leading to dilutional hyponatremia.
6. A patient is admitted with Acute Respiratory Distress Syndrome (ARDS). Which phase is
characterized by the formation of hyaline membranes?
A. Proliferative Phase
B. Exudative Phase
C. Fibrotic Phase
COMPREHENSIVE EXAM STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS
|100% CORRECT| GRADE A+
NIGHTINGALE
1. In the context of Cardiogenic Shock, which hemodynamic parameter is most
characteristically increased?
A. Pulmonary Artery Wedge Pressure (PAWP)
B. Cardiac Index
C. Mixed Venous Oxygen Saturation (SvO2)
D. Mean Arterial Pressure (MAP)
Answer: A
Conceptual Explanation: In cardiogenic shock, the heart fails to pump effectively, leading
to blood backing up into the pulmonary circulation, which increases the PAWP. Cardiac
index, SvO2, and MAP typically decrease.
2. Which of the following describes the primary pathophysiology of Type II Hypersensitivity
reactions?
A. IgE-mediated mast cell degranulation
,B. Immune complex deposition in tissues
C. Antibody-mediated cell destruction or dysfunction
D. T-cell mediated delayed response
Answer: C
Conceptual Explanation: Type II hypersensitivity involves IgG or IgM antibodies binding
to antigens on cell surfaces, leading to cell lysis (e.g., hemolytic transfusion reactions).
3. A patient with Chronic Kidney Disease (CKD) presents with a high serum phosphorus level.
What is the compensatory mechanism that leads to secondary hyperparathyroidism?
A. Excessive Vitamin D activation by the kidneys
B. Increased renal excretion of calcium
C. Decreased production of Erythropoietin
D. Hypocalcemia resulting from hyperphosphatemia
Answer: D
Conceptual Explanation: High phosphorus levels bind with calcium, lowering serum
calcium levels. The parathyroid glands respond to hypocalcemia by secreting PTH to pull
calcium from the bones.
4. What is the hallmark finding on an EKG for a patient experiencing Hyperkalemia?
A. Prominent U waves
B. Tall, peaked T waves
, C. Prolonged QT interval
D. ST-segment depression
Answer: B
Conceptual Explanation: Tall, peaked T waves are one of the earliest signs of
hyperkalemia. As levels rise, the PR interval prolongs and the QRS widens.
5. Which electrolyte imbalance is a patient most at risk for when experiencing Syndrome of
Inappropriate Antidiuretic Hormone (SIADH)?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hyponatremia
Answer: D
Conceptual Explanation: SIADH causes excessive water retention, which dilutes the
serum sodium, leading to dilutional hyponatremia.
6. A patient is admitted with Acute Respiratory Distress Syndrome (ARDS). Which phase is
characterized by the formation of hyaline membranes?
A. Proliferative Phase
B. Exudative Phase
C. Fibrotic Phase
