WGU D115 OA ADVANCED PATHOPHYSIOLOGY EXAM 2 VERSIONS 2026/2027 BANK
ACTUAL QUESTIONS WITH DETAILED ANSWERS AND OA READINESS PRACTICE
EXAM TEST BANK WITH STUDY GUIDEEXPERT VERIFIED FOR GUARANTEED
PASS/ALREADY GRADED A+
Question 1
In a patient with liver cirrhosis, what is the primary pathophysiological mechanism leading to the
development of ascites?
A) Increased oncotic pressure and decreased portal vein pressure
B) Portal hypertension and decreased synthesis of albumin
C) Chronic renal failure leading to fluid retention
D) Excessive dietary sodium intake and water consumption
E) Obstruction of the bile duct leading to gallbladder inflammation
Correct Answer: B) Portal hypertension and decreased synthesis of albumin
Rationale: Ascites in cirrhosis is primarily caused by two factors: portal hypertension,
which increases hydrostatic pressure in the peritoneal capillaries, and hypoalbuminemia
(low albumin). Because the liver is scarred, it cannot produce enough albumin, leading to a
decrease in plasma oncotic pressure, which allows fluid to leak into the abdominal cavity.
Question 2
A newborn presents with a high-pitched, cat-like cry, microcephaly, and intellectual disability.
Which genetic condition is the most likely cause?
A) Trisomy 21 (Down Syndrome)
B) Trisomy 18 (Edward Syndrome)
C) Trisomy 13 (Patau Syndrome)
D) Cri du Chat Syndrome
E) Klinefelter Syndrome
Correct Answer: D) Cri du Chat Syndrome
Rationale: Cri du Chat ("cry of the cat") syndrome is caused by a deletion of the short arm
of chromosome 5. The characteristic high-pitched cry is due to abnormal laryngeal
development. Other features include microcephaly, wide-set eyes, and severe cognitive
impairment.
Question 3
What is the underlying cause of the hyperthyroidism observed in Graves’ Disease?
A) A viral infection of the thyroid follicles
B) A deficiency in dietary iodine leading to compensation
C) Production of thyroid-stimulating immunoglobulins (TSI) that mimic TSH
D) A benign adenoma secreting excessive T3 and T4
E) Destruction of the thyroid gland by T-cytotoxic cells
Correct Answer: C) Production of thyroid-stimulating immunoglobulins (TSI) that mimic
TSH
Rationale: Graves' Disease is an autoimmune disorder where B-lymphocytes produce
antibodies (TSI) that bind to and activate the TSH receptors on the thyroid gland. This
, 2
leads to the overproduction of thyroid hormones (T3 and T4) and enlargement of the gland
(goiter).
Question 4
Which laboratory finding is hallmark for the Syndrome of Inappropriate Antidiuretic Hormone
(SIADH)?
A) Serum hypernatremia and high serum osmolality
B) Dilutional hyponatremia and low serum osmolality
C) Hyperglycemia and metabolic acidosis
D) Hypokalemia and increased urine output
E) Elevated BUN and creatinine levels
Correct Answer: B) Hyponatremia and low serum osmolality
Rationale: In SIADH, there is an excessive release of ADH, causing the kidneys to reabsorb
too much water. This results in an increase in total body water, which dilutes the sodium in
the blood (hyponatremia) and lowers the overall concentration of the blood (low serum
osmolality).
Question 5
A 2-year-old child is brought to the clinic after the parents noticed a white reflection in the pupil
during a flash photograph. This sign, known as leukocoria, is the hallmark of:
A) Retinoblastoma
B) Congenital cataracts
C) Glaucoma
D) Macular degeneration
E) Strabismus
Correct Answer: A) Retinoblastoma
Rationale: Retinoblastoma is a rare form of eye cancer that affects the retina in young
children. Leukocoria (the "cat's eye reflex" or white pupillary reflex) occurs because the
tumor reflects the light back rather than the normal red reflex of the vascular retina.
Question 6
A patient presents to the emergency department complaining of "flashing lights" and a sensation
of a "curtain" being pulled over their field of vision. These symptoms are classic for:
A) Acute angle-closure glaucoma
B) Nuclear cataracts
C) Retinal detachment
D) Age-related macular degeneration
E) Diabetic retinopathy
Correct Answer: C) Retinal detachment
Rationale: Retinal detachment occurs when the retina peels away from its underlying layer
of support tissue. The flashing lights (photopsia) are caused by the vitreous pulling on the
, 3
retina, and the "curtain" represents the area where the retina has actually detached and is
no longer receiving visual input.
Question 7
A patient presents with a severe sore throat, difficulty swallowing, and a "hot potato" voice. On
examination, the uvula is deviated to the left. What is the most likely diagnosis?
A) Acute epiglottitis
B) Streptococcal pharyngitis
C) Peritonsillar abscess
D) Laryngotracheobronchitis (Croup)
E) Infectious mononucleosis
Correct Answer: C) Peritonsillar abscess
Rationale: A peritonsillar abscess is a complication of tonsillitis where pus collects behind
the tonsil. The accumulation of pus pushes the tonsil toward the midline and causes the
uvula to deviate to the opposite side. The "hot potato" voice is due to the swelling and pain
in the oropharynx.
Question 8
A 4-year-old presents with a "strawberry tongue," high fever for 6 days, and edema of the hands
and feet. Which condition should be suspected?
A) Measles (Rubeola)
B) Scarlet Fever
C) Hand-foot-mouth disease
D) Kawasaki Disease
E) Roseola
Correct Answer: D) Kawasaki Disease
Rationale: Kawasaki Disease is an acute vasculitis of childhood. The diagnostic criteria
include a fever for at least 5 days plus four out of five other signs: "strawberry tongue" (or
red cracked lips), bilateral conjunctivitis, erythema/edema of hands/feet, skin rash, and
cervical lymphadenopathy.
Question 9
The pathophysiology of Multiple Organ Dysfunction Syndrome (MODS) is best described as:
A) A localized infection that causes swelling in one limb
B) The progressive failure of two or more organ systems resulting from an uncontrolled
inflammatory response
C) An acute myocardial infarction leading to sudden cardiac arrest
D) The formation of kidney stones leading to hydronephrosis
E) A chronic autoimmune attack on the myelin sheath
Correct Answer: A) Progressive failure of 2+ organ systems due to uncontrolled
inflammation
ACTUAL QUESTIONS WITH DETAILED ANSWERS AND OA READINESS PRACTICE
EXAM TEST BANK WITH STUDY GUIDEEXPERT VERIFIED FOR GUARANTEED
PASS/ALREADY GRADED A+
Question 1
In a patient with liver cirrhosis, what is the primary pathophysiological mechanism leading to the
development of ascites?
A) Increased oncotic pressure and decreased portal vein pressure
B) Portal hypertension and decreased synthesis of albumin
C) Chronic renal failure leading to fluid retention
D) Excessive dietary sodium intake and water consumption
E) Obstruction of the bile duct leading to gallbladder inflammation
Correct Answer: B) Portal hypertension and decreased synthesis of albumin
Rationale: Ascites in cirrhosis is primarily caused by two factors: portal hypertension,
which increases hydrostatic pressure in the peritoneal capillaries, and hypoalbuminemia
(low albumin). Because the liver is scarred, it cannot produce enough albumin, leading to a
decrease in plasma oncotic pressure, which allows fluid to leak into the abdominal cavity.
Question 2
A newborn presents with a high-pitched, cat-like cry, microcephaly, and intellectual disability.
Which genetic condition is the most likely cause?
A) Trisomy 21 (Down Syndrome)
B) Trisomy 18 (Edward Syndrome)
C) Trisomy 13 (Patau Syndrome)
D) Cri du Chat Syndrome
E) Klinefelter Syndrome
Correct Answer: D) Cri du Chat Syndrome
Rationale: Cri du Chat ("cry of the cat") syndrome is caused by a deletion of the short arm
of chromosome 5. The characteristic high-pitched cry is due to abnormal laryngeal
development. Other features include microcephaly, wide-set eyes, and severe cognitive
impairment.
Question 3
What is the underlying cause of the hyperthyroidism observed in Graves’ Disease?
A) A viral infection of the thyroid follicles
B) A deficiency in dietary iodine leading to compensation
C) Production of thyroid-stimulating immunoglobulins (TSI) that mimic TSH
D) A benign adenoma secreting excessive T3 and T4
E) Destruction of the thyroid gland by T-cytotoxic cells
Correct Answer: C) Production of thyroid-stimulating immunoglobulins (TSI) that mimic
TSH
Rationale: Graves' Disease is an autoimmune disorder where B-lymphocytes produce
antibodies (TSI) that bind to and activate the TSH receptors on the thyroid gland. This
, 2
leads to the overproduction of thyroid hormones (T3 and T4) and enlargement of the gland
(goiter).
Question 4
Which laboratory finding is hallmark for the Syndrome of Inappropriate Antidiuretic Hormone
(SIADH)?
A) Serum hypernatremia and high serum osmolality
B) Dilutional hyponatremia and low serum osmolality
C) Hyperglycemia and metabolic acidosis
D) Hypokalemia and increased urine output
E) Elevated BUN and creatinine levels
Correct Answer: B) Hyponatremia and low serum osmolality
Rationale: In SIADH, there is an excessive release of ADH, causing the kidneys to reabsorb
too much water. This results in an increase in total body water, which dilutes the sodium in
the blood (hyponatremia) and lowers the overall concentration of the blood (low serum
osmolality).
Question 5
A 2-year-old child is brought to the clinic after the parents noticed a white reflection in the pupil
during a flash photograph. This sign, known as leukocoria, is the hallmark of:
A) Retinoblastoma
B) Congenital cataracts
C) Glaucoma
D) Macular degeneration
E) Strabismus
Correct Answer: A) Retinoblastoma
Rationale: Retinoblastoma is a rare form of eye cancer that affects the retina in young
children. Leukocoria (the "cat's eye reflex" or white pupillary reflex) occurs because the
tumor reflects the light back rather than the normal red reflex of the vascular retina.
Question 6
A patient presents to the emergency department complaining of "flashing lights" and a sensation
of a "curtain" being pulled over their field of vision. These symptoms are classic for:
A) Acute angle-closure glaucoma
B) Nuclear cataracts
C) Retinal detachment
D) Age-related macular degeneration
E) Diabetic retinopathy
Correct Answer: C) Retinal detachment
Rationale: Retinal detachment occurs when the retina peels away from its underlying layer
of support tissue. The flashing lights (photopsia) are caused by the vitreous pulling on the
, 3
retina, and the "curtain" represents the area where the retina has actually detached and is
no longer receiving visual input.
Question 7
A patient presents with a severe sore throat, difficulty swallowing, and a "hot potato" voice. On
examination, the uvula is deviated to the left. What is the most likely diagnosis?
A) Acute epiglottitis
B) Streptococcal pharyngitis
C) Peritonsillar abscess
D) Laryngotracheobronchitis (Croup)
E) Infectious mononucleosis
Correct Answer: C) Peritonsillar abscess
Rationale: A peritonsillar abscess is a complication of tonsillitis where pus collects behind
the tonsil. The accumulation of pus pushes the tonsil toward the midline and causes the
uvula to deviate to the opposite side. The "hot potato" voice is due to the swelling and pain
in the oropharynx.
Question 8
A 4-year-old presents with a "strawberry tongue," high fever for 6 days, and edema of the hands
and feet. Which condition should be suspected?
A) Measles (Rubeola)
B) Scarlet Fever
C) Hand-foot-mouth disease
D) Kawasaki Disease
E) Roseola
Correct Answer: D) Kawasaki Disease
Rationale: Kawasaki Disease is an acute vasculitis of childhood. The diagnostic criteria
include a fever for at least 5 days plus four out of five other signs: "strawberry tongue" (or
red cracked lips), bilateral conjunctivitis, erythema/edema of hands/feet, skin rash, and
cervical lymphadenopathy.
Question 9
The pathophysiology of Multiple Organ Dysfunction Syndrome (MODS) is best described as:
A) A localized infection that causes swelling in one limb
B) The progressive failure of two or more organ systems resulting from an uncontrolled
inflammatory response
C) An acute myocardial infarction leading to sudden cardiac arrest
D) The formation of kidney stones leading to hydronephrosis
E) A chronic autoimmune attack on the myelin sheath
Correct Answer: A) Progressive failure of 2+ organ systems due to uncontrolled
inflammation
