WGU D115 OA ADVANCED PATHOPHYSIOLOGY
EXAM 1 2025 | ACTUAL EXAM QUESTIONS WITH
DETAILED ANSWERS WITH RATIONALES AND A
READINESS PRACTICE EXAM
1. A 45-year-old male with a history of hypertension presents with sudden onset
of severe chest pain, radiating to his left arm. His blood pressure is 180/110 mm
Hg, and his ECG shows ST-segment elevation in leads II, III, and aVF. What is the
most likely diagnosis?
A) Stable angina
B) Unstable angina
C) Myocardial infarction
D) Pericarditis
Answer: C) Myocardial infarction
Rationale:
The presentation of sudden, severe chest pain, radiating to the left arm, along
with elevated blood pressure and ST-segment elevation on the ECG, is consistent
with a myocardial infarction (MI). ST-segment elevation indicates myocardial
injury, typically seen in an acute STEMI (ST-Elevation Myocardial Infarction).
Stable and unstable angina would present differently and are not associated
with ST-segment elevation.
,2. A patient presents with a persistent dry cough, fever, night sweats, and weight
loss. A chest x-ray reveals a cavity in the upper lobe of the lung. Which of the
following is the most likely cause?
A) Acute bronchitis
B) Tuberculosis (TB)
C) Lung cancer
D) Pneumonia
Answer: B) Tuberculosis (TB)
Rationale:
The symptoms of persistent cough, fever, night sweats, and weight loss, coupled
with a lung cavity on x-ray, are highly suggestive of tuberculosis. TB typically
presents with these constitutional symptoms and can cause cavitary lesions in
the upper lung lobes. Acute bronchitis and pneumonia typically present with
more acute symptoms, and lung cancer can cause weight loss and cough but is
less likely to cause cavitary lesions without additional evidence of malignancy.
3. A patient with type 1 diabetes presents with fruity-smelling breath, deep and
rapid breathing, and a blood glucose level of 450 mg/dL. Which of the following is
the most likely diagnosis?
A) Diabetic ketoacidosis (DKA)
B) Hyperosmolar hyperglycemic state (HHS)
C) Hypoglycemia
,D) Diabetic retinopathy
Answer: A) Diabetic ketoacidosis (DKA)
Rationale:
Fruity-smelling breath and deep, rapid breathing (Kussmaul respirations) in a
patient with a blood glucose level of 450 mg/dL are characteristic signs of
diabetic ketoacidosis (DKA). DKA is common in type 1 diabetes and is caused by
a lack of insulin, leading to ketosis. Hyperosmolar hyperglycemic state (HHS)
typically occurs in type 2 diabetes and is associated with extremely high blood
glucose levels without ketosis. Hypoglycemia presents with symptoms such as
sweating, shakiness, and confusion, and diabetic retinopathy involves vision
changes.
4. A 60-year-old male presents with increasing fatigue, shortness of breath on
exertion, and swelling in his lower legs. His jugular venous pressure (JVP) is
elevated, and a heart murmur is heard on auscultation. Which of the following is
the most likely cause of his symptoms?
A) Myocardial infarction
B) Heart failure
C) Chronic obstructive pulmonary disease (COPD)
D) Pulmonary embolism
Answer: B) Heart failure
Rationale:
, The combination of fatigue, shortness of breath on exertion, lower extremity
swelling, elevated JVP, and a heart murmur is suggestive of heart failure. In
heart failure, the heart's inability to pump efficiently leads to fluid retention and
symptoms such as edema and shortness of breath. Myocardial infarction could
lead to heart failure, but the acute symptoms of a recent MI would be different.
COPD and pulmonary embolism are less likely to explain the combination of
symptoms.
5. A patient presents with fever, chills, and pain in the right lower quadrant of the
abdomen. Physical examination reveals tenderness on palpation, and a positive
rebound tenderness. Which of the following conditions is most likely?
A) Acute pancreatitis
B) Appendicitis
C) Gallbladder disease
D) Diverticulitis
Answer: B) Appendicitis
Rationale:
The fever, chills, right lower quadrant pain, and positive rebound tenderness are
classic signs of appendicitis. Rebound tenderness occurs when pressure on the
abdomen is released, causing pain due to inflammation of the peritoneum.
Acute pancreatitis usually causes upper abdominal pain, while gallbladder
disease typically presents with right upper quadrant pain. Diverticulitis can
cause lower abdominal pain but is more commonly seen on the left side.
6. A 24-year-old female presents with a butterfly-shaped rash across her cheeks
and nose, photosensitivity, and joint pain. Which of the following is the most
likely diagnosis?
EXAM 1 2025 | ACTUAL EXAM QUESTIONS WITH
DETAILED ANSWERS WITH RATIONALES AND A
READINESS PRACTICE EXAM
1. A 45-year-old male with a history of hypertension presents with sudden onset
of severe chest pain, radiating to his left arm. His blood pressure is 180/110 mm
Hg, and his ECG shows ST-segment elevation in leads II, III, and aVF. What is the
most likely diagnosis?
A) Stable angina
B) Unstable angina
C) Myocardial infarction
D) Pericarditis
Answer: C) Myocardial infarction
Rationale:
The presentation of sudden, severe chest pain, radiating to the left arm, along
with elevated blood pressure and ST-segment elevation on the ECG, is consistent
with a myocardial infarction (MI). ST-segment elevation indicates myocardial
injury, typically seen in an acute STEMI (ST-Elevation Myocardial Infarction).
Stable and unstable angina would present differently and are not associated
with ST-segment elevation.
,2. A patient presents with a persistent dry cough, fever, night sweats, and weight
loss. A chest x-ray reveals a cavity in the upper lobe of the lung. Which of the
following is the most likely cause?
A) Acute bronchitis
B) Tuberculosis (TB)
C) Lung cancer
D) Pneumonia
Answer: B) Tuberculosis (TB)
Rationale:
The symptoms of persistent cough, fever, night sweats, and weight loss, coupled
with a lung cavity on x-ray, are highly suggestive of tuberculosis. TB typically
presents with these constitutional symptoms and can cause cavitary lesions in
the upper lung lobes. Acute bronchitis and pneumonia typically present with
more acute symptoms, and lung cancer can cause weight loss and cough but is
less likely to cause cavitary lesions without additional evidence of malignancy.
3. A patient with type 1 diabetes presents with fruity-smelling breath, deep and
rapid breathing, and a blood glucose level of 450 mg/dL. Which of the following is
the most likely diagnosis?
A) Diabetic ketoacidosis (DKA)
B) Hyperosmolar hyperglycemic state (HHS)
C) Hypoglycemia
,D) Diabetic retinopathy
Answer: A) Diabetic ketoacidosis (DKA)
Rationale:
Fruity-smelling breath and deep, rapid breathing (Kussmaul respirations) in a
patient with a blood glucose level of 450 mg/dL are characteristic signs of
diabetic ketoacidosis (DKA). DKA is common in type 1 diabetes and is caused by
a lack of insulin, leading to ketosis. Hyperosmolar hyperglycemic state (HHS)
typically occurs in type 2 diabetes and is associated with extremely high blood
glucose levels without ketosis. Hypoglycemia presents with symptoms such as
sweating, shakiness, and confusion, and diabetic retinopathy involves vision
changes.
4. A 60-year-old male presents with increasing fatigue, shortness of breath on
exertion, and swelling in his lower legs. His jugular venous pressure (JVP) is
elevated, and a heart murmur is heard on auscultation. Which of the following is
the most likely cause of his symptoms?
A) Myocardial infarction
B) Heart failure
C) Chronic obstructive pulmonary disease (COPD)
D) Pulmonary embolism
Answer: B) Heart failure
Rationale:
, The combination of fatigue, shortness of breath on exertion, lower extremity
swelling, elevated JVP, and a heart murmur is suggestive of heart failure. In
heart failure, the heart's inability to pump efficiently leads to fluid retention and
symptoms such as edema and shortness of breath. Myocardial infarction could
lead to heart failure, but the acute symptoms of a recent MI would be different.
COPD and pulmonary embolism are less likely to explain the combination of
symptoms.
5. A patient presents with fever, chills, and pain in the right lower quadrant of the
abdomen. Physical examination reveals tenderness on palpation, and a positive
rebound tenderness. Which of the following conditions is most likely?
A) Acute pancreatitis
B) Appendicitis
C) Gallbladder disease
D) Diverticulitis
Answer: B) Appendicitis
Rationale:
The fever, chills, right lower quadrant pain, and positive rebound tenderness are
classic signs of appendicitis. Rebound tenderness occurs when pressure on the
abdomen is released, causing pain due to inflammation of the peritoneum.
Acute pancreatitis usually causes upper abdominal pain, while gallbladder
disease typically presents with right upper quadrant pain. Diverticulitis can
cause lower abdominal pain but is more commonly seen on the left side.
6. A 24-year-old female presents with a butterfly-shaped rash across her cheeks
and nose, photosensitivity, and joint pain. Which of the following is the most
likely diagnosis?
