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1. What is the primary characteristic of shock?
A) Hypertension
B) Inadequate tissue perfusion
C) Increased oxygen delivery
D) Increased cardiac output - Correct Answer: B) Inadequate tissue
perfusion
Rationale: Shock is defined by inadequate tissue perfusion, leading to
decreased oxygen and nutrient delivery to cells.
2. Which of the following best describes the primary consequence of
anaerobic metabolism in shock?
A) Increased ATP production
B) Increased oxygen consumption
C) Lactic acid accumulation
D) Enhanced cellular function - Correct Answer: C) Lactic acid
accumulation
Rationale: Anaerobic metabolism results in lactic acid accumulation, leading
to metabolic acidosis and further impairing cellular function.
,3. What is the major cause of metabolic acidosis in shock?
A) Hypoventilation
B) Excessive bicarbonate production
C) Lactic acid accumulation
D) Hyperkalemia - Correct Answer: C) Lactic acid accumulation
Rationale: Inadequate oxygen delivery forces cells into anaerobic
metabolism, leading to lactic acid accumulation and metabolic acidosis.
4. Which type of shock is caused by reduced blood volume?
A) Cardiogenic shock
B) Hypovolemic shock
C) Distributive shock
D) Neurogenic shock - Correct Answer: B) Hypovolemic shock
Rationale: Hypovolemic shock results from a significant decrease in blood
volume, leading to inadequate perfusion.
5. Which type of shock is primarily caused by heart failure?
A) Cardiogenic shock
B) Hypovolemic shock
C) Septic shock
D) Neurogenic shock - Correct Answer: A) Cardiogenic shock
Rationale: Cardiogenic shock results from decreased cardiac output due to
heart dysfunction, leading to poor tissue perfusion.
,6. What happens to sodium and water balance in cells during shock?
A) Sodium moves out of the cells
B) Water moves out of the cells
C) Sodium and water accumulate inside the cells
D) There is no change in sodium and water balance - Correct
Answer: C) Sodium and water accumulate inside the cells
Rationale: ATP depletion leads to Na+/K+ pump failure, causing sodium and
water to accumulate inside cells, leading to cellular swelling.
7. Why does tachycardia occur in shock?
A) To compensate for decreased cardiac output
B) To decrease oxygen demand
C) To reduce metabolic rate
D) To increase waste removal - Correct Answer: A) To compensate
for decreased cardiac output
Rationale: The body increases heart rate to compensate for low cardiac
output and maintain blood flow to vital organs.
8. What is the major cause of organ dysfunction in shock?
A) Increased blood pressure
B) Impaired oxygen and nutrient delivery
C) Enhanced cellular metabolism
D) Excessive waste removal - Correct Answer: B) Impaired oxygen
and nutrient delivery
, Rationale: Organ dysfunction results from inadequate oxygen and nutrient
supply, leading to cellular injury and failure.
9. Which type of shock is most commonly associated with systemic infections?
A) Hypovolemic shock
B) Cardiogenic shock
C) Septic shock
D) Neurogenic shock - Correct Answer: C) Septic shock
Rationale: Septic shock is caused by widespread infection, leading to
vasodilation, increased capillary permeability, and decreased perfusion.
10.Which metabolic process is most impaired during shock?
A) Protein synthesis
B) Glycolysis
C) Oxidative phosphorylation
D) Lipid metabolism - Correct Answer: C) Oxidative phosphorylation
Rationale: Inadequate oxygen delivery impairs oxidative phosphorylation,
leading to decreased ATP production and reliance on anaerobic metabolism.
11.What is the primary effect of metabolic acidosis in shock?
A) Increased enzyme function
B) Decreased pH and cellular dysfunction
C) Increased ATP production
D) Enhanced protein synthesis - Correct Answer: B) Decreased pH
and cellular dysfunction