NRS 455
Pathophysiology
Q & A w/ Rationales
2024
,A patient presents with dyspnea, fatigue, and peripheral
edema. Which of the following pathophysiological
mechanisms is most likely responsible for these
symptoms?
A. Decreased cardiac output
B. Increased systemic vascular resistance
C. Hypervolemia
D. Pulmonary hypertension
Answer: A
Rationale: The symptoms described are consistent with
heart failure, which is primarily characterized by
decreased cardiac output leading to systemic and
pulmonary congestion.
A patient is diagnosed with type 2 diabetes mellitus.
Which of the following pathophysiological processes is
primarily responsible for the development of
hyperglycemia in this condition?
A. Insulin resistance and impaired insulin secretion
B. Autoimmune destruction of beta cells
C. Deficiency of amylin hormone
D. Increased glucagon secretion
Answer: A
Rationale: Type 2 diabetes mellitus is characterized by
insulin resistance and impaired insulin secretion, leading
to elevated blood glucose levels.
A patient presents with severe abdominal pain, nausea,
,and vomiting. Laboratory tests reveal elevated serum
lipase and amylase. Which of the following
pathophysiological conditions is most likely to be
responsible for these findings?
A. Acute cholecystitis
B. Acute pancreatitis
C. Peptic ulcer disease
D. Intestinal obstruction
Answer: B
Rationale: Elevated serum lipase and amylase levels are
indicative of pancreatic injury, which is a hallmark of
acute pancreatitis.
A patient presents with joint pain, stiffness, and swelling,
particularly in the small joints of the hands. Which of the
following pathophysiological processes is most likely
responsible for these symptoms?
A. Synovial inflammation and hyperplasia
B. Cartilage degradation and bone erosion
C. Immune complex deposition in the joints
D. Dysregulation of cytokine signaling
Answer: A
Rationale: The described symptoms are consistent with
the inflammatory process of rheumatoid arthritis,
characterized by synovial inflammation and hyperplasia.
A patient with a history of chronic kidney disease presents
with elevated serum potassium levels. Which of the
following pathophysiological mechanisms is most likely
, responsible for this finding?
A. Decreased renal potassium excretion
B. Excessive dietary intake of potassium-rich foods
C. Altered potassium distribution between intracellular
and extracellular compartments
D. Impaired potassium uptake by skeletal muscles
Answer: A
Rationale: In chronic kidney disease, the impaired renal
function leads to decreased potassium excretion, resulting
in elevated serum potassium levels.
A patient presents with sudden-onset vision changes,
including floaters and flashes of light. Which of the
following pathophysiological conditions should be
suspected in this patient?
A. Retinal detachment
B. Glaucoma
C. Macular degeneration
D. Optic neuritis
Answer: A
Rationale: The described symptoms are consistent with
the clinical presentation of retinal detachment, which
requires prompt medical attention to prevent permanent
vision loss.
A patient with a history of liver cirrhosis presents with
ascites, jaundice, and coagulopathy. Which of the
following pathophysiological mechanisms is most likely
responsible for these findings?
Pathophysiology
Q & A w/ Rationales
2024
,A patient presents with dyspnea, fatigue, and peripheral
edema. Which of the following pathophysiological
mechanisms is most likely responsible for these
symptoms?
A. Decreased cardiac output
B. Increased systemic vascular resistance
C. Hypervolemia
D. Pulmonary hypertension
Answer: A
Rationale: The symptoms described are consistent with
heart failure, which is primarily characterized by
decreased cardiac output leading to systemic and
pulmonary congestion.
A patient is diagnosed with type 2 diabetes mellitus.
Which of the following pathophysiological processes is
primarily responsible for the development of
hyperglycemia in this condition?
A. Insulin resistance and impaired insulin secretion
B. Autoimmune destruction of beta cells
C. Deficiency of amylin hormone
D. Increased glucagon secretion
Answer: A
Rationale: Type 2 diabetes mellitus is characterized by
insulin resistance and impaired insulin secretion, leading
to elevated blood glucose levels.
A patient presents with severe abdominal pain, nausea,
,and vomiting. Laboratory tests reveal elevated serum
lipase and amylase. Which of the following
pathophysiological conditions is most likely to be
responsible for these findings?
A. Acute cholecystitis
B. Acute pancreatitis
C. Peptic ulcer disease
D. Intestinal obstruction
Answer: B
Rationale: Elevated serum lipase and amylase levels are
indicative of pancreatic injury, which is a hallmark of
acute pancreatitis.
A patient presents with joint pain, stiffness, and swelling,
particularly in the small joints of the hands. Which of the
following pathophysiological processes is most likely
responsible for these symptoms?
A. Synovial inflammation and hyperplasia
B. Cartilage degradation and bone erosion
C. Immune complex deposition in the joints
D. Dysregulation of cytokine signaling
Answer: A
Rationale: The described symptoms are consistent with
the inflammatory process of rheumatoid arthritis,
characterized by synovial inflammation and hyperplasia.
A patient with a history of chronic kidney disease presents
with elevated serum potassium levels. Which of the
following pathophysiological mechanisms is most likely
, responsible for this finding?
A. Decreased renal potassium excretion
B. Excessive dietary intake of potassium-rich foods
C. Altered potassium distribution between intracellular
and extracellular compartments
D. Impaired potassium uptake by skeletal muscles
Answer: A
Rationale: In chronic kidney disease, the impaired renal
function leads to decreased potassium excretion, resulting
in elevated serum potassium levels.
A patient presents with sudden-onset vision changes,
including floaters and flashes of light. Which of the
following pathophysiological conditions should be
suspected in this patient?
A. Retinal detachment
B. Glaucoma
C. Macular degeneration
D. Optic neuritis
Answer: A
Rationale: The described symptoms are consistent with
the clinical presentation of retinal detachment, which
requires prompt medical attention to prevent permanent
vision loss.
A patient with a history of liver cirrhosis presents with
ascites, jaundice, and coagulopathy. Which of the
following pathophysiological mechanisms is most likely
responsible for these findings?
