,WGU D236 Pathophysiology Exam Review | Comprehensive
Practice Questions with Detailed Answer Explanations |
Updated 2026 Study Guide for Objective Assessment
Preparation
1. A client presents with fatigue, confusion, deep rapid
breathing, an increased anion gap, and a serum bicarbonate
level of 𝟏𝟓 mEq/L. Which condition is most likely indicated?
• A) Respiratory Alkalosis
• B) Diabetic Ketoacidosis (DKA)
• C) Metabolic Alkalosis
• D) Respiratory Acidosis
• Answer: B
• Rationale: DKA features high blood glucose leading to
ketoacidosis, which presents with an increased anion gap
and a depleted bicarbonate level.
2. How does the Renin-Angiotensin-Aldosterone System
(RAAS) respond to a drop in systemic blood pressure?
• A) By causing systemic vasodilation and excreting sodium
• B) By releasing renin from the kidneys, which ultimately
leads to vasoconstriction and sodium/water retention
• C) By decreasing heart rate and increasing urine output
, • D) By shutting down aldosterone production entirely
• Answer: B
• Rationale: RAAS restores blood pressure and volume via
vasoconstriction and renal retention of sodium and water.
3. Which clinical manifestation is classically associated with
Amyotrophic Lateral Sclerosis (ALS)?
• A) Butterfly facial rash
• B) Head drop due to cervical muscle weakness
• C) Exquisitely high blood pressure above 180/120 mmHg as
an isolated sign
• D) Uncontrolled joint stiffness in the morning only
• Answer: B
• Rationale: Progressive muscle wasting in ALS commonly
affects neck flexors, leading to a characteristic "head
drop".
4. What are known physiological triggers for vaso-occlusive
crises in patients with Sickle Cell Disease?
• A) High-altitude oxygen therapy and rest
• B) Acidosis and dehydration
• C) Warm environments and high fluid intake
• D) Alkalosis and relaxation
, • Answer: B
• Rationale: Dehydration and acidosis promote red blood
cell sickling and microvascular occlusion.
5. Which autoimmune disorder involves antibodies attacking
postsynaptic acetylcholine receptors at the neuromuscular
junction, resulting in progressive skeletal muscle weakness
throughout the day?
• A) Systemic Lupus Erythematosus
• B) Myasthenia Gravis
• C) Multiple Sclerosis
• D) Rheumatoid Arthritis
• Answer: B
• Rationale: Myasthenia Gravis is characterized by antibody-
mediated destruction of acetylcholine receptors, leading to
fatigue and muscle weakness with repetitive use.
6. What is a primary supportive treatment goal for a client
experiencing Disseminated Intravascular Coagulation (DIC)?
• A) Administering high-dose anticoagulants exclusively
• B) Transfusing fresh frozen plasma and platelets to
replenish consumed clotting factors
• C) Fluid restriction to prevent heart failure
Practice Questions with Detailed Answer Explanations |
Updated 2026 Study Guide for Objective Assessment
Preparation
1. A client presents with fatigue, confusion, deep rapid
breathing, an increased anion gap, and a serum bicarbonate
level of 𝟏𝟓 mEq/L. Which condition is most likely indicated?
• A) Respiratory Alkalosis
• B) Diabetic Ketoacidosis (DKA)
• C) Metabolic Alkalosis
• D) Respiratory Acidosis
• Answer: B
• Rationale: DKA features high blood glucose leading to
ketoacidosis, which presents with an increased anion gap
and a depleted bicarbonate level.
2. How does the Renin-Angiotensin-Aldosterone System
(RAAS) respond to a drop in systemic blood pressure?
• A) By causing systemic vasodilation and excreting sodium
• B) By releasing renin from the kidneys, which ultimately
leads to vasoconstriction and sodium/water retention
• C) By decreasing heart rate and increasing urine output
, • D) By shutting down aldosterone production entirely
• Answer: B
• Rationale: RAAS restores blood pressure and volume via
vasoconstriction and renal retention of sodium and water.
3. Which clinical manifestation is classically associated with
Amyotrophic Lateral Sclerosis (ALS)?
• A) Butterfly facial rash
• B) Head drop due to cervical muscle weakness
• C) Exquisitely high blood pressure above 180/120 mmHg as
an isolated sign
• D) Uncontrolled joint stiffness in the morning only
• Answer: B
• Rationale: Progressive muscle wasting in ALS commonly
affects neck flexors, leading to a characteristic "head
drop".
4. What are known physiological triggers for vaso-occlusive
crises in patients with Sickle Cell Disease?
• A) High-altitude oxygen therapy and rest
• B) Acidosis and dehydration
• C) Warm environments and high fluid intake
• D) Alkalosis and relaxation
, • Answer: B
• Rationale: Dehydration and acidosis promote red blood
cell sickling and microvascular occlusion.
5. Which autoimmune disorder involves antibodies attacking
postsynaptic acetylcholine receptors at the neuromuscular
junction, resulting in progressive skeletal muscle weakness
throughout the day?
• A) Systemic Lupus Erythematosus
• B) Myasthenia Gravis
• C) Multiple Sclerosis
• D) Rheumatoid Arthritis
• Answer: B
• Rationale: Myasthenia Gravis is characterized by antibody-
mediated destruction of acetylcholine receptors, leading to
fatigue and muscle weakness with repetitive use.
6. What is a primary supportive treatment goal for a client
experiencing Disseminated Intravascular Coagulation (DIC)?
• A) Administering high-dose anticoagulants exclusively
• B) Transfusing fresh frozen plasma and platelets to
replenish consumed clotting factors
• C) Fluid restriction to prevent heart failure
