### Advanced Pathophysiology Nursing Exam
Cycle 2025/2026 | University Prep Notes |
NCLEX-Style Comprehensive Study Pack
**100 Questions with Verified Rationales**
---
**1. A patient presents with severe metabolic acidosis. Which of the following laboratory values would
the nurse expect to see?**
💫ANSWER✔️✔️: Serum bicarbonate of 12 mEq/L and pH of 7.25.
💫RATIONALE✔️✔️: Metabolic acidosis is characterized by a primary decrease in serum bicarbonate
(HCO3-) and a subsequent decrease in pH. A bicarbonate level of 12 mEq/L (normal 22-26) and a pH of
7.25 (normal 7.35-7.45) are classic findings.
**2. Which of the following is the most common cause of chronic liver disease in the United States?**
💫ANSWER✔️✔️: Non-alcoholic fatty liver disease (NAFLD).
💫RATIONALE✔️✔️: NAFLD has become the leading cause of chronic liver disease in the US, driven by the
increasing prevalence of obesity, metabolic syndrome, and type 2 diabetes mellitus. It encompasses a
spectrum from simple steatosis to non-alcoholic steatohepatitis (NASH) and cirrhosis.
**3. A nurse is reviewing the pathophysiology of type 1 diabetes mellitus. Which of the following
statements accurately describes the underlying mechanism?**
💫ANSWER✔️✔️: Autoimmune destruction of pancreatic beta cells leads to absolute insulin deficiency.
💫RATIONALE✔️✔️: Type 1 diabetes is an autoimmune disease where the body's immune system attacks
and destroys the insulin-producing beta cells in the islets of Langerhans of the pancreas. This results in
an absolute deficiency of insulin, requiring exogenous insulin for survival.
,**4. A patient with heart failure develops peripheral edema. This is primarily due to which of the
following mechanisms?**
💫ANSWER✔️✔️: Increased hydrostatic pressure in the venous circulation.
💫RATIONALE✔️✔️: In heart failure, the heart's reduced pumping ability causes blood to back up in the
venous circulation. This increases the hydrostatic pressure within the capillaries, forcing fluid out into
the interstitial space, leading to peripheral edema.
**5. The nurse is caring for a patient with a diagnosis of syndrome of inappropriate antidiuretic
hormone (SIADH). Which of the following electrolyte imbalances is a hallmark of this condition?**
💫ANSWER✔️✔️: Hyponatremia.
💫RATIONALE✔️✔️: SIADH is characterized by excessive release of antidiuretic hormone (ADH), leading to
water retention by the kidneys. This excess water dilutes the sodium in the blood, resulting in dilutional
hyponatremia.
**6. A patient is diagnosed with Graves' disease. Which pathophysiological mechanism is responsible for
this condition?**
💫ANSWER✔️✔️: Autoantibodies stimulate the thyroid-stimulating hormone (TSH) receptor, causing
hyperthyroidism.
💫RATIONALE✔️✔️: Graves' disease is an autoimmune disorder where thyroid-stimulating
immunoglobulins (TSIs) bind to and activate the TSH receptors on the thyroid gland. This stimulates
excessive thyroid hormone production, independent of normal negative feedback regulation.
**7. A nurse is assessing a patient with chronic obstructive pulmonary disease (COPD). Which of the
following is the primary pathophysiological change?**
💫ANSWER✔️✔️: Airflow limitation that is not fully reversible due to airway inflammation and
destruction of lung parenchyma.
💫RATIONALE✔️✔️: COPD is characterized by chronic, progressive, and irreversible airflow limitation. It
involves a combination of small airway disease (bronchiolitis) and parenchymal destruction
(emphysema), leading to obstruction and gas trapping.
**8. The nurse is reviewing the pathophysiology of acute kidney injury (AKI). Which of the following is a
pre-renal cause of AKI?**
💫ANSWER✔️✔️: Severe dehydration.
, 💫RATIONALE✔️✔️: Pre-renal AKI is caused by decreased renal blood flow, leading to reduced glomerular
filtration. Severe dehydration, hemorrhage, and heart failure are common pre-renal causes that
compromise renal perfusion.
**9. A patient with a history of sickle cell disease experiences a vaso-occlusive crisis. What is the
underlying mechanism for this event?**
💫ANSWER✔️✔️: Deoxygenated hemoglobin S polymerizes, causing red blood cells to become sickle-
shaped and obstruct microcirculation.
💫RATIONALE✔️✔️: In sickle cell disease, the abnormal hemoglobin S (HbS) polymerizes when
deoxygenated, distorting the red blood cells into a sickle shape. These rigid, sickled cells aggregate and
occlude small blood vessels, causing ischemia, pain, and tissue damage.
**10. A client is diagnosed with pernicious anemia. Which of the following pathophysiological
mechanisms is responsible?**
💫ANSWER✔️✔️: Lack of intrinsic factor prevents the absorption of vitamin B12.
💫RATIONALE✔️✔️: Pernicious anemia is caused by the absence of intrinsic factor, a protein produced by
parietal cells in the stomach that is required for vitamin B12 absorption in the ileum. This leads to a
deficiency of vitamin B12, which is essential for red blood cell maturation.
**11. Which of the following best describes the pathophysiology of a myocardial infarction (MI)?**
💫ANSWER✔️✔️: Plaque rupture with thrombus formation causing complete occlusion of a coronary
artery.
💫RATIONALE✔️✔️: The majority of MIs occur when an atherosclerotic plaque in a coronary artery
ruptures, exposing collagen and other thrombogenic substances. This triggers platelet aggregation and
the formation of a thrombus, which completely occludes the vessel, leading to myocardial ischemia and
necrosis.
**12. A patient is in septic shock. Which of the following is the primary pathophysiological cause of the
profound hypotension observed?**
💫ANSWER✔️✔️: Widespread vasodilation due to the release of inflammatory mediators.
💫RATIONALE✔️✔️: Sepsis triggers a massive systemic inflammatory response, leading to the release of
potent vasodilators like nitric oxide. This causes widespread vasodilation, significantly reducing systemic
vascular resistance (SVR) and leading to life-threatening hypotension.
Cycle 2025/2026 | University Prep Notes |
NCLEX-Style Comprehensive Study Pack
**100 Questions with Verified Rationales**
---
**1. A patient presents with severe metabolic acidosis. Which of the following laboratory values would
the nurse expect to see?**
💫ANSWER✔️✔️: Serum bicarbonate of 12 mEq/L and pH of 7.25.
💫RATIONALE✔️✔️: Metabolic acidosis is characterized by a primary decrease in serum bicarbonate
(HCO3-) and a subsequent decrease in pH. A bicarbonate level of 12 mEq/L (normal 22-26) and a pH of
7.25 (normal 7.35-7.45) are classic findings.
**2. Which of the following is the most common cause of chronic liver disease in the United States?**
💫ANSWER✔️✔️: Non-alcoholic fatty liver disease (NAFLD).
💫RATIONALE✔️✔️: NAFLD has become the leading cause of chronic liver disease in the US, driven by the
increasing prevalence of obesity, metabolic syndrome, and type 2 diabetes mellitus. It encompasses a
spectrum from simple steatosis to non-alcoholic steatohepatitis (NASH) and cirrhosis.
**3. A nurse is reviewing the pathophysiology of type 1 diabetes mellitus. Which of the following
statements accurately describes the underlying mechanism?**
💫ANSWER✔️✔️: Autoimmune destruction of pancreatic beta cells leads to absolute insulin deficiency.
💫RATIONALE✔️✔️: Type 1 diabetes is an autoimmune disease where the body's immune system attacks
and destroys the insulin-producing beta cells in the islets of Langerhans of the pancreas. This results in
an absolute deficiency of insulin, requiring exogenous insulin for survival.
,**4. A patient with heart failure develops peripheral edema. This is primarily due to which of the
following mechanisms?**
💫ANSWER✔️✔️: Increased hydrostatic pressure in the venous circulation.
💫RATIONALE✔️✔️: In heart failure, the heart's reduced pumping ability causes blood to back up in the
venous circulation. This increases the hydrostatic pressure within the capillaries, forcing fluid out into
the interstitial space, leading to peripheral edema.
**5. The nurse is caring for a patient with a diagnosis of syndrome of inappropriate antidiuretic
hormone (SIADH). Which of the following electrolyte imbalances is a hallmark of this condition?**
💫ANSWER✔️✔️: Hyponatremia.
💫RATIONALE✔️✔️: SIADH is characterized by excessive release of antidiuretic hormone (ADH), leading to
water retention by the kidneys. This excess water dilutes the sodium in the blood, resulting in dilutional
hyponatremia.
**6. A patient is diagnosed with Graves' disease. Which pathophysiological mechanism is responsible for
this condition?**
💫ANSWER✔️✔️: Autoantibodies stimulate the thyroid-stimulating hormone (TSH) receptor, causing
hyperthyroidism.
💫RATIONALE✔️✔️: Graves' disease is an autoimmune disorder where thyroid-stimulating
immunoglobulins (TSIs) bind to and activate the TSH receptors on the thyroid gland. This stimulates
excessive thyroid hormone production, independent of normal negative feedback regulation.
**7. A nurse is assessing a patient with chronic obstructive pulmonary disease (COPD). Which of the
following is the primary pathophysiological change?**
💫ANSWER✔️✔️: Airflow limitation that is not fully reversible due to airway inflammation and
destruction of lung parenchyma.
💫RATIONALE✔️✔️: COPD is characterized by chronic, progressive, and irreversible airflow limitation. It
involves a combination of small airway disease (bronchiolitis) and parenchymal destruction
(emphysema), leading to obstruction and gas trapping.
**8. The nurse is reviewing the pathophysiology of acute kidney injury (AKI). Which of the following is a
pre-renal cause of AKI?**
💫ANSWER✔️✔️: Severe dehydration.
, 💫RATIONALE✔️✔️: Pre-renal AKI is caused by decreased renal blood flow, leading to reduced glomerular
filtration. Severe dehydration, hemorrhage, and heart failure are common pre-renal causes that
compromise renal perfusion.
**9. A patient with a history of sickle cell disease experiences a vaso-occlusive crisis. What is the
underlying mechanism for this event?**
💫ANSWER✔️✔️: Deoxygenated hemoglobin S polymerizes, causing red blood cells to become sickle-
shaped and obstruct microcirculation.
💫RATIONALE✔️✔️: In sickle cell disease, the abnormal hemoglobin S (HbS) polymerizes when
deoxygenated, distorting the red blood cells into a sickle shape. These rigid, sickled cells aggregate and
occlude small blood vessels, causing ischemia, pain, and tissue damage.
**10. A client is diagnosed with pernicious anemia. Which of the following pathophysiological
mechanisms is responsible?**
💫ANSWER✔️✔️: Lack of intrinsic factor prevents the absorption of vitamin B12.
💫RATIONALE✔️✔️: Pernicious anemia is caused by the absence of intrinsic factor, a protein produced by
parietal cells in the stomach that is required for vitamin B12 absorption in the ileum. This leads to a
deficiency of vitamin B12, which is essential for red blood cell maturation.
**11. Which of the following best describes the pathophysiology of a myocardial infarction (MI)?**
💫ANSWER✔️✔️: Plaque rupture with thrombus formation causing complete occlusion of a coronary
artery.
💫RATIONALE✔️✔️: The majority of MIs occur when an atherosclerotic plaque in a coronary artery
ruptures, exposing collagen and other thrombogenic substances. This triggers platelet aggregation and
the formation of a thrombus, which completely occludes the vessel, leading to myocardial ischemia and
necrosis.
**12. A patient is in septic shock. Which of the following is the primary pathophysiological cause of the
profound hypotension observed?**
💫ANSWER✔️✔️: Widespread vasodilation due to the release of inflammatory mediators.
💫RATIONALE✔️✔️: Sepsis triggers a massive systemic inflammatory response, leading to the release of
potent vasodilators like nitric oxide. This causes widespread vasodilation, significantly reducing systemic
vascular resistance (SVR) and leading to life-threatening hypotension.
