Applied Pathophysiology a Conceptual Approach Fourth Edition Question Bank

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Sample questions from Applied Pathophysiology a Conceptual Approach Fourth Edition Question Bank

This material has 90 questions with answers and rationales. Here are the first 5.

1. 1.A patient with a bacterial infection develops redness, warmth, swelling, and pain at the affected site. Which mechanism most directly produces the swelling?

   • A.Increased vascular permeability allowing fluid and proteins to enter tissues
   • B.Reduced blood flow caused by persistent arteriolar constriction
   • C.Decreased leukocyte adhesion to the vascular endothelium
   • D.Increased plasma oncotic pressure drawing fluid into capillaries

   Rationale: Inflammatory mediators increase vascular permeability, allowing protein-rich fluid to move into the interstitial space and cause edema. Persistent vasoconstriction would reduce local flow rather than produce the classic warmth and redness, while decreased leukocyte adhesion would impair inflammation. Increased plasma oncotic pressure would favor fluid movement into capillaries, not tissue.

2. 2.A patient has a fever and an elevated hypothalamic temperature set point during an infection. Which mediator is most closely associated with this change?

   • A.Histamine
   • B.Prostaglandin E2
   • C.Bradykinin
   • D.Complement C3b

   Rationale: Pyrogenic cytokines promote prostaglandin E2 production in the hypothalamus, raising the temperature set point and causing fever. Histamine primarily contributes to vasodilation and permeability, while bradykinin contributes to pain and vascular changes. C3b is an opsonin that promotes phagocytosis, not a set-point mediator.

3. 3.A wound contains neutrophils during the first day after injury and increasing numbers of macrophages over the next several days. Which interpretation best explains this sequence?

   • A.Neutrophils initiate antibody production, then macrophages suppress it
   • B.Neutrophils arrive early for phagocytosis, while macrophages later clear debris and coordinate repair
   • C.Macrophages are the first circulating cells to enter every acute inflammatory site
   • D.The shift indicates that the inflammatory response has become an allergic reaction

   Rationale: Neutrophils are rapid early responders in acute inflammation, whereas monocytes enter tissues and mature into macrophages that remove debris and release repair signals. Antibody production is a function of B-cell derivatives, not neutrophils. Macrophages do not universally arrive first, and a change in cell populations alone does not indicate allergy.

4. 4.A patient develops tissue injury after antibodies bind to antigens on the patient's own cell surfaces and activate complement. Which hypersensitivity type is most likely?

   • A.Type I
   • B.Type II
   • C.Type III
   • D.Type IV

   Answer and rationale are in the full material.

5. 5.A patient with systemic lupus erythematosus develops inflammation from immune-complex deposition in the kidneys. Which hypersensitivity mechanism is responsible?

   • A.IgE-mediated mast-cell degranulation
   • B.Antibody-mediated destruction of a specific cell surface
   • C.Immune-complex deposition with complement activation
   • D.Delayed T-cell-mediated cytotoxicity

   Answer and rationale are in the full material.