HESI RN Pathophysiology Exam |
Complete Review Workbook |
2025/2026 Edition
Section 1: Introduction
This workbook offers comprehensive Q&A for disease mechanisms, risk factors,
signs/symptoms, and nursing interventions. Perfect for reinforcing pathophysiologic
concepts across systems and preparing for clinically based reasoning in the HESI
Patho Exam.
Section 2: Exam Questions and Full Answers
1. What is the primary pathophysiological mechanism of type 1 diabetes mellitus?
A. Insulin resistance
B. Autoimmune destruction of pancreatic beta cells
C. Excessive glucagon secretion
D. Impaired glucose uptake by cells
Full Answer: Answer B. Autoimmune destruction of pancreatic beta cells. This leads
to absolute insulin deficiency, causing hyperglycemia and metabolic disturbances.
2. What is the most common cause of hypertension in adults?
A. Renal artery stenosis
B. Primary (essential) hypertension
C. Pheochromocytoma
D. Coarctation of the aorta
Full Answer: Answer B. Primary (essential) hypertension. This accounts for 90-95%
of cases, linked to genetic and lifestyle factors.
3. What pathophysiological process is responsible for the edema in heart failure?
A. Increased capillary permeability
B. Decreased cardiac output and venous congestion
C. Excessive aldosterone secretion
D. Lymphatic obstruction
Full Answer: Answer B. Decreased cardiac output and venous congestion. This
causes fluid backup in tissues due to poor pumping efficiency.
4. What is the primary mechanism of acute respiratory distress syndrome (ARDS)?
A. Bronchoconstriction
B. Diffuse alveolar damage and surfactant dysfunction
C. Pulmonary embolism
D. Chronic obstructive changes
Full Answer: Answer B. Diffuse alveolar damage and surfactant dysfunction. This
results in non-cardiogenic pulmonary edema.
5. What is the underlying cause of rheumatoid arthritis?
A. Deposition of uric acid crystals
B. Autoimmune attack on synovial joints
C. Degenerative cartilage wear
D. Bacterial infection of joints
, Full Answer: Answer B. Autoimmune attack on synovial joints. This leads to chronic
inflammation and joint damage.
6. What pathophysiological change occurs in Parkinson’s disease?
A. Loss of dopaminergic neurons in the substantia nigra
B. Excessive acetylcholine production
C. Demyelination of motor neurons
D. Hyperactivity of the basal ganglia
Full Answer: Answer A. Loss of dopaminergic neurons in the substantia nigra. This
disrupts motor control, causing tremors.
7. What is the primary trigger for an asthma attack?
A. Increased parasympathetic tone
B. Airway inflammation and bronchoconstriction
C. Alveolar collapse
D. Pulmonary fibrosis
Full Answer: Answer B. Airway inflammation and bronchoconstriction. This is
triggered by allergens, leading to airflow obstruction.
8. What is the main pathophysiological process in cirrhosis of the liver?
A. Excessive bile production
B. Fibrosis and nodular regeneration
C. Increased hepatic glucose storage
D. Hypersecretion of albumin
Full Answer: Answer B. Fibrosis and nodular regeneration. This replaces healthy
tissue, impairing liver function.
9. What causes the muscle weakness in myasthenia gravis?
A. Autoimmune attack on neuromuscular junctions
B. Muscle fiber degeneration
C. Excessive calcium release
D. Mitochondrial dysfunction
Full Answer: Answer A. Autoimmune attack on neuromuscular junctions. This
reduces acetylcholine receptor activity.
10. What is the primary mechanism of acute kidney injury (AKI) due to hypovolemia?
A. Glomerular hypertension
B. Decreased renal perfusion
C. Obstruction of ureters
D. Excessive renin secretion
Full Answer: Answer B. Decreased renal perfusion. Hypovolemia reduces blood flow
to the kidneys, causing injury.
11. What pathophysiological process is responsible for the pain in osteoarthritis?
A. Autoimmune inflammation
B. Cartilage degeneration and bone remodeling
C. Uric acid crystal deposition
D. Synovial hypertrophy
Full Answer: Answer B. Cartilage degeneration and bone remodeling. This narrows
joint space, causing pain.
12. What is the primary cause of hyperthyroidism in Graves’ disease?
A. Iodine deficiency
B. Autoimmune stimulation of the thyroid
C. Pituitary adenoma
D. Thyroidectomy
, Full Answer: Answer B. Autoimmune stimulation of the thyroid. TSH receptor
antibodies overproduce thyroid hormones.
13. What is the underlying mechanism of sickle cell anemia?
A. Deficiency of hemoglobin
B. Abnormal hemoglobin polymerization
C. Increased red blood cell production
D. Iron overload
Full Answer: Answer B. Abnormal hemoglobin polymerization. This causes sickling
and vaso-occlusion.
14. What pathophysiological change occurs in Alzheimer’s disease?
A. Loss of myelin in the cortex
B. Accumulation of beta-amyloid plaques and tau tangles
C. Excessive dopamine levels
D. Gliosis in the brainstem
Full Answer: Answer B. Accumulation of beta-amyloid plaques and tau tangles. This
damages neurons, causing dementia.
15. What is the primary trigger for a myocardial infarction?
A. Coronary artery spasm
B. Plaque rupture and thrombus formation
C. Valvular stenosis
D. Pericardial effusion
Full Answer: Answer B. Plaque rupture and thrombus formation. This obstructs
coronary flow, causing ischemia.
16. What is the main pathophysiological process in chronic obstructive pulmonary disease
(COPD)?
A. Alveolar hyperinflation and airway obstruction
B. Increased surfactant production
C. Pulmonary vasodilation
D. Bronchial hyperresponsiveness
Full Answer: Answer A. Alveolar hyperinflation and airway obstruction. This results
from chronic inflammation.
17. What causes the jaundice in hepatitis?
A. Increased bilirubin conjugation
B. Liver inflammation and impaired bile excretion
C. Excessive red blood cell destruction
D. Gallbladder obstruction
Full Answer: Answer B. Liver inflammation and impaired bile excretion. This causes
bilirubin buildup.
18. What is the primary mechanism of hypertension in chronic kidney disease?
A. Increased cardiac output
B. Activation of the renin-angiotensin-aldosterone system
C. Vasodilation of renal arteries
D. Decreased sodium retention
Full Answer: Answer B. Activation of the renin-angiotensin-aldosterone system. This
raises blood pressure via fluid retention.
19. What pathophysiological process leads to the formation of gallstones?
A. Excessive bile acid secretion
B. Cholesterol supersaturation and crystallization
C. Increased pancreatic enzyme activity
D. Liver enzyme deficiency
Complete Review Workbook |
2025/2026 Edition
Section 1: Introduction
This workbook offers comprehensive Q&A for disease mechanisms, risk factors,
signs/symptoms, and nursing interventions. Perfect for reinforcing pathophysiologic
concepts across systems and preparing for clinically based reasoning in the HESI
Patho Exam.
Section 2: Exam Questions and Full Answers
1. What is the primary pathophysiological mechanism of type 1 diabetes mellitus?
A. Insulin resistance
B. Autoimmune destruction of pancreatic beta cells
C. Excessive glucagon secretion
D. Impaired glucose uptake by cells
Full Answer: Answer B. Autoimmune destruction of pancreatic beta cells. This leads
to absolute insulin deficiency, causing hyperglycemia and metabolic disturbances.
2. What is the most common cause of hypertension in adults?
A. Renal artery stenosis
B. Primary (essential) hypertension
C. Pheochromocytoma
D. Coarctation of the aorta
Full Answer: Answer B. Primary (essential) hypertension. This accounts for 90-95%
of cases, linked to genetic and lifestyle factors.
3. What pathophysiological process is responsible for the edema in heart failure?
A. Increased capillary permeability
B. Decreased cardiac output and venous congestion
C. Excessive aldosterone secretion
D. Lymphatic obstruction
Full Answer: Answer B. Decreased cardiac output and venous congestion. This
causes fluid backup in tissues due to poor pumping efficiency.
4. What is the primary mechanism of acute respiratory distress syndrome (ARDS)?
A. Bronchoconstriction
B. Diffuse alveolar damage and surfactant dysfunction
C. Pulmonary embolism
D. Chronic obstructive changes
Full Answer: Answer B. Diffuse alveolar damage and surfactant dysfunction. This
results in non-cardiogenic pulmonary edema.
5. What is the underlying cause of rheumatoid arthritis?
A. Deposition of uric acid crystals
B. Autoimmune attack on synovial joints
C. Degenerative cartilage wear
D. Bacterial infection of joints
, Full Answer: Answer B. Autoimmune attack on synovial joints. This leads to chronic
inflammation and joint damage.
6. What pathophysiological change occurs in Parkinson’s disease?
A. Loss of dopaminergic neurons in the substantia nigra
B. Excessive acetylcholine production
C. Demyelination of motor neurons
D. Hyperactivity of the basal ganglia
Full Answer: Answer A. Loss of dopaminergic neurons in the substantia nigra. This
disrupts motor control, causing tremors.
7. What is the primary trigger for an asthma attack?
A. Increased parasympathetic tone
B. Airway inflammation and bronchoconstriction
C. Alveolar collapse
D. Pulmonary fibrosis
Full Answer: Answer B. Airway inflammation and bronchoconstriction. This is
triggered by allergens, leading to airflow obstruction.
8. What is the main pathophysiological process in cirrhosis of the liver?
A. Excessive bile production
B. Fibrosis and nodular regeneration
C. Increased hepatic glucose storage
D. Hypersecretion of albumin
Full Answer: Answer B. Fibrosis and nodular regeneration. This replaces healthy
tissue, impairing liver function.
9. What causes the muscle weakness in myasthenia gravis?
A. Autoimmune attack on neuromuscular junctions
B. Muscle fiber degeneration
C. Excessive calcium release
D. Mitochondrial dysfunction
Full Answer: Answer A. Autoimmune attack on neuromuscular junctions. This
reduces acetylcholine receptor activity.
10. What is the primary mechanism of acute kidney injury (AKI) due to hypovolemia?
A. Glomerular hypertension
B. Decreased renal perfusion
C. Obstruction of ureters
D. Excessive renin secretion
Full Answer: Answer B. Decreased renal perfusion. Hypovolemia reduces blood flow
to the kidneys, causing injury.
11. What pathophysiological process is responsible for the pain in osteoarthritis?
A. Autoimmune inflammation
B. Cartilage degeneration and bone remodeling
C. Uric acid crystal deposition
D. Synovial hypertrophy
Full Answer: Answer B. Cartilage degeneration and bone remodeling. This narrows
joint space, causing pain.
12. What is the primary cause of hyperthyroidism in Graves’ disease?
A. Iodine deficiency
B. Autoimmune stimulation of the thyroid
C. Pituitary adenoma
D. Thyroidectomy
, Full Answer: Answer B. Autoimmune stimulation of the thyroid. TSH receptor
antibodies overproduce thyroid hormones.
13. What is the underlying mechanism of sickle cell anemia?
A. Deficiency of hemoglobin
B. Abnormal hemoglobin polymerization
C. Increased red blood cell production
D. Iron overload
Full Answer: Answer B. Abnormal hemoglobin polymerization. This causes sickling
and vaso-occlusion.
14. What pathophysiological change occurs in Alzheimer’s disease?
A. Loss of myelin in the cortex
B. Accumulation of beta-amyloid plaques and tau tangles
C. Excessive dopamine levels
D. Gliosis in the brainstem
Full Answer: Answer B. Accumulation of beta-amyloid plaques and tau tangles. This
damages neurons, causing dementia.
15. What is the primary trigger for a myocardial infarction?
A. Coronary artery spasm
B. Plaque rupture and thrombus formation
C. Valvular stenosis
D. Pericardial effusion
Full Answer: Answer B. Plaque rupture and thrombus formation. This obstructs
coronary flow, causing ischemia.
16. What is the main pathophysiological process in chronic obstructive pulmonary disease
(COPD)?
A. Alveolar hyperinflation and airway obstruction
B. Increased surfactant production
C. Pulmonary vasodilation
D. Bronchial hyperresponsiveness
Full Answer: Answer A. Alveolar hyperinflation and airway obstruction. This results
from chronic inflammation.
17. What causes the jaundice in hepatitis?
A. Increased bilirubin conjugation
B. Liver inflammation and impaired bile excretion
C. Excessive red blood cell destruction
D. Gallbladder obstruction
Full Answer: Answer B. Liver inflammation and impaired bile excretion. This causes
bilirubin buildup.
18. What is the primary mechanism of hypertension in chronic kidney disease?
A. Increased cardiac output
B. Activation of the renin-angiotensin-aldosterone system
C. Vasodilation of renal arteries
D. Decreased sodium retention
Full Answer: Answer B. Activation of the renin-angiotensin-aldosterone system. This
raises blood pressure via fluid retention.
19. What pathophysiological process leads to the formation of gallstones?
A. Excessive bile acid secretion
B. Cholesterol supersaturation and crystallization
C. Increased pancreatic enzyme activity
D. Liver enzyme deficiency
