WGU D236 PATHOPHYSIOLOGY OA EXAM LATEST
COMPLETE ACTUAL REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT VERIFIED
ANSWERS) NEWEST UPDATED VERSION | ALREADY
GRADED A+ (REVISED EXAM)
A patient presents with a fever, tachycardia, and tachypnea following a severe
bacterial infection. Which pathophysiologic process best describes this systemic
response?
A. Autoimmune reaction
B. Systemic inflammatory response syndrome (SIRS)
C. Anaphylactic shock
D. Neurogenic shock
ANS: B
Explanation: SIRS is a systemic inflammatory response triggered by infection,
trauma, or other insults, characterized by fever or hypothermia, tachycardia,
tachypnea, and leukocytosis or leukopenia. Anaphylactic shock involves IgE-
,mediated hypersensitivity, and neurogenic shock results from loss of sympathetic
tone. Autoimmune reactions are not the primary mechanism in acute bacterial
sepsis.
Which of the following best describes the role of histamine in the inflammatory
response?
A. Vasoconstriction and decreased permeability
B. Vasodilation and increased vascular permeability
C. Inhibition of leukocyte migration
D. Suppression of cytokine release
ANS: B
Explanation: Histamine released from mast cells causes vasodilation and
increased vascular permeability, leading to redness, heat, swelling, and pain. It
does not cause vasoconstriction or suppress leukocyte migration; rather, it
promotes leukocyte infiltration.
,A 45-year-old male with a history of alcohol abuse presents with fatty liver,
hepatomegaly, and elevated liver enzymes. Which pathophysiologic mechanism
best explains his condition?
A. Viral infection of hepatocytes
B. Accumulation of triglycerides in hepatocytes
C. Autoimmune destruction of bile ducts
D. Iron overload in the liver
ANS: B
Explanation: Alcoholic fatty liver disease is characterized by accumulation of
triglycerides in hepatocytes due to increased lipogenesis and decreased fatty acid
oxidation. Viral infection, autoimmune destruction, and iron overload are different
causes of liver disease.
, Which electrolyte imbalance is most commonly associated with prolonged
vomiting?
A. Hyperkalemia and metabolic acidosis
B. Hypokalemia and metabolic alkalosis
C. Hypernatremia and metabolic acidosis
D. Hypocalcemia and respiratory alkalosis
ANS: B
Explanation: Prolonged vomiting leads to loss of hydrogen ions (metabolic
alkalosis) and potassium (hypokalemia). Hyperkalemia, hypernatremia, and
hypocalcemia are not typical primary findings of vomiting.
A patient with chronic kidney disease has a glomerular filtration rate (GFR) of 25
mL/min. Which stage of CKD does this represent?
COMPLETE ACTUAL REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT VERIFIED
ANSWERS) NEWEST UPDATED VERSION | ALREADY
GRADED A+ (REVISED EXAM)
A patient presents with a fever, tachycardia, and tachypnea following a severe
bacterial infection. Which pathophysiologic process best describes this systemic
response?
A. Autoimmune reaction
B. Systemic inflammatory response syndrome (SIRS)
C. Anaphylactic shock
D. Neurogenic shock
ANS: B
Explanation: SIRS is a systemic inflammatory response triggered by infection,
trauma, or other insults, characterized by fever or hypothermia, tachycardia,
tachypnea, and leukocytosis or leukopenia. Anaphylactic shock involves IgE-
,mediated hypersensitivity, and neurogenic shock results from loss of sympathetic
tone. Autoimmune reactions are not the primary mechanism in acute bacterial
sepsis.
Which of the following best describes the role of histamine in the inflammatory
response?
A. Vasoconstriction and decreased permeability
B. Vasodilation and increased vascular permeability
C. Inhibition of leukocyte migration
D. Suppression of cytokine release
ANS: B
Explanation: Histamine released from mast cells causes vasodilation and
increased vascular permeability, leading to redness, heat, swelling, and pain. It
does not cause vasoconstriction or suppress leukocyte migration; rather, it
promotes leukocyte infiltration.
,A 45-year-old male with a history of alcohol abuse presents with fatty liver,
hepatomegaly, and elevated liver enzymes. Which pathophysiologic mechanism
best explains his condition?
A. Viral infection of hepatocytes
B. Accumulation of triglycerides in hepatocytes
C. Autoimmune destruction of bile ducts
D. Iron overload in the liver
ANS: B
Explanation: Alcoholic fatty liver disease is characterized by accumulation of
triglycerides in hepatocytes due to increased lipogenesis and decreased fatty acid
oxidation. Viral infection, autoimmune destruction, and iron overload are different
causes of liver disease.
, Which electrolyte imbalance is most commonly associated with prolonged
vomiting?
A. Hyperkalemia and metabolic acidosis
B. Hypokalemia and metabolic alkalosis
C. Hypernatremia and metabolic acidosis
D. Hypocalcemia and respiratory alkalosis
ANS: B
Explanation: Prolonged vomiting leads to loss of hydrogen ions (metabolic
alkalosis) and potassium (hypokalemia). Hyperkalemia, hypernatremia, and
hypocalcemia are not typical primary findings of vomiting.
A patient with chronic kidney disease has a glomerular filtration rate (GFR) of 25
mL/min. Which stage of CKD does this represent?
