HESI Pathophysiology Exam 2 HU NSG120 Actual
Exam Questions & Verified Answers with Rationales |
Graded A+ | 150 High-Yield Questions | Herzing
University 2026/2027
Introduction
Ace your HESI Pathophysiology Exam 2 (HU NSG120) with this comprehensive, 150-
question practice bank designed specifically for nursing students aiming for first-attempt
success. This premium study resource is divided into three high-yield sections to help you
master every essential pathophysiology domain:
Section 1: Cellular & Systemic Basics: Deep-dive into cellular adaptation, fluid
and electrolyte shifts (e.g., hyponatremia, hypokalemia), and acid-base regulation
(ABG interpretation).
Section 2: Inflammation & Immunity: Master the exact mechanisms of
acute/chronic inflammation, hypersensitivity reactions (Types I-IV), and autoimmune
disorders like SLE and Rheumatoid Arthritis.
, Section 3: Complex Organ Systems: Focused review of high-yield cardiovascular
diseases, respiratory conditions (COPD, emphysema), renal pathology (AKI, CKD),
and endocrine dysfunctions.
SECTION 1: Cellular Alterations, Fluid/Electrolyte Imbalances, & Fluid Shifting (Q1–
Q50)
Q1. A client with chronic kidney disease presents with a serum potassium level of 6.2
mEq/L. Which pathophysiological consequence is the nurse's primary concern?
A. Skeletal muscle flaccidity due to hyperpolarization of the resting membrane potential.
B. Increased cardiac excitability and risk of lethal dysrhythmias due to a narrowed gradient
between resting membrane potential and threshold.
C. Prolonged PR intervals indicating accelerated sinoatrial node firing.
D. Intestinal ileus resulting from smoothed muscle hyper-motility.
Correct Answer: B
Rationale: A potassium level of 6.2 mEq/L represents severe hyperkalemia. Extracellular
potassium elevation alters the chemical gradient, partially depolarizing the resting
membrane potential of cardiomyocytes. This narrows the gap between the resting potential
, and the threshold, making the cells hyper-excitable initially, which can quickly destabilize
cardiac conduction and cause ventricular fibrillation or cardiac arrest. Muscle weakness (A),
rather than flaccidity, occurs later. Hyperkalemia causes tall, peaked T waves, not
accelerated SA firing (C). It typically causes GI cramping or diarrhea, not an ileus (D).
Q2. During a myocardial infarction, lack of oxygen leads to a rapid decline in cellular
ATP production. Which cellular malfunction directly causes the subsequent hydropic
swelling (cellular edema)?
A. Failure of the calcium-calmodulin complex to bind to troponin.
B. Failure of the Na⁺/K⁺ ATPase pump, leading to an intracellular accumulation of sodium
and an osmotic influx of water.
C. Structural collapse of the nuclear envelope due to respiratory alkalosis.
D. Excessive activation of lysosomes releasing alkaline phosphatase into the interstitium.
Correct Answer: B
Rationale: Ischemia deprives cells of oxygen, halting oxidative phosphorylation and
crashing ATP levels. Without ATP, the energy-dependent Na⁺/K⁺ ATPase pump fails.
Sodium builds up inside the cell instead of being pumped out. This creates an osmotic
gradient that pulls water into the cell, causing hydropic swelling, organelle distortion, and
eventual membrane rupture if ischemia persists.
, Q3. A client presents with severe protein-calorie malnutrition (kwashiorkor) and
exhibits profound generalized edema and ascites. Which Starling force alteration
explains this clinical presentation?
A. Increased capillary hydrostatic pressure (\(P_{c}\)) from fluid volume overload.
B. Decreased interstitial fluid hydrostatic pressure (\(P_{if}\)) from structural skin collapse.
C. Decreased capillary oncotic pressure (\(\pi _{c}\)) due to a profound lack of circulating
albumin.
D. Increased interstitial fluid oncotic pressure (\(\pi _{if}\)) via lymphatic vessel hyper-
filtration.
Correct Answer: C
Rationale: Malnutrition leads to hypoalbuminemia because the liver lacks the amino acids
needed to synthesize plasma proteins. Albumin provides the primary osmotic pulling force
(\(\pi _{c}\)) that keeps water inside the vascular compartment. When capillary oncotic
pressure drops, fluid is no longer reabsorbed at the venular end of the capillary bed, leaking
into the interstitial spaces and causing severe edema and ascites.
Q4. A client with severe hyperparathyroidism develops a serum calcium level of 12.8
mg/dL. Which neuromuscular manifestation should the nurse anticipate based on the
pathophysiology of this electrolyte imbalance?
Exam Questions & Verified Answers with Rationales |
Graded A+ | 150 High-Yield Questions | Herzing
University 2026/2027
Introduction
Ace your HESI Pathophysiology Exam 2 (HU NSG120) with this comprehensive, 150-
question practice bank designed specifically for nursing students aiming for first-attempt
success. This premium study resource is divided into three high-yield sections to help you
master every essential pathophysiology domain:
Section 1: Cellular & Systemic Basics: Deep-dive into cellular adaptation, fluid
and electrolyte shifts (e.g., hyponatremia, hypokalemia), and acid-base regulation
(ABG interpretation).
Section 2: Inflammation & Immunity: Master the exact mechanisms of
acute/chronic inflammation, hypersensitivity reactions (Types I-IV), and autoimmune
disorders like SLE and Rheumatoid Arthritis.
, Section 3: Complex Organ Systems: Focused review of high-yield cardiovascular
diseases, respiratory conditions (COPD, emphysema), renal pathology (AKI, CKD),
and endocrine dysfunctions.
SECTION 1: Cellular Alterations, Fluid/Electrolyte Imbalances, & Fluid Shifting (Q1–
Q50)
Q1. A client with chronic kidney disease presents with a serum potassium level of 6.2
mEq/L. Which pathophysiological consequence is the nurse's primary concern?
A. Skeletal muscle flaccidity due to hyperpolarization of the resting membrane potential.
B. Increased cardiac excitability and risk of lethal dysrhythmias due to a narrowed gradient
between resting membrane potential and threshold.
C. Prolonged PR intervals indicating accelerated sinoatrial node firing.
D. Intestinal ileus resulting from smoothed muscle hyper-motility.
Correct Answer: B
Rationale: A potassium level of 6.2 mEq/L represents severe hyperkalemia. Extracellular
potassium elevation alters the chemical gradient, partially depolarizing the resting
membrane potential of cardiomyocytes. This narrows the gap between the resting potential
, and the threshold, making the cells hyper-excitable initially, which can quickly destabilize
cardiac conduction and cause ventricular fibrillation or cardiac arrest. Muscle weakness (A),
rather than flaccidity, occurs later. Hyperkalemia causes tall, peaked T waves, not
accelerated SA firing (C). It typically causes GI cramping or diarrhea, not an ileus (D).
Q2. During a myocardial infarction, lack of oxygen leads to a rapid decline in cellular
ATP production. Which cellular malfunction directly causes the subsequent hydropic
swelling (cellular edema)?
A. Failure of the calcium-calmodulin complex to bind to troponin.
B. Failure of the Na⁺/K⁺ ATPase pump, leading to an intracellular accumulation of sodium
and an osmotic influx of water.
C. Structural collapse of the nuclear envelope due to respiratory alkalosis.
D. Excessive activation of lysosomes releasing alkaline phosphatase into the interstitium.
Correct Answer: B
Rationale: Ischemia deprives cells of oxygen, halting oxidative phosphorylation and
crashing ATP levels. Without ATP, the energy-dependent Na⁺/K⁺ ATPase pump fails.
Sodium builds up inside the cell instead of being pumped out. This creates an osmotic
gradient that pulls water into the cell, causing hydropic swelling, organelle distortion, and
eventual membrane rupture if ischemia persists.
, Q3. A client presents with severe protein-calorie malnutrition (kwashiorkor) and
exhibits profound generalized edema and ascites. Which Starling force alteration
explains this clinical presentation?
A. Increased capillary hydrostatic pressure (\(P_{c}\)) from fluid volume overload.
B. Decreased interstitial fluid hydrostatic pressure (\(P_{if}\)) from structural skin collapse.
C. Decreased capillary oncotic pressure (\(\pi _{c}\)) due to a profound lack of circulating
albumin.
D. Increased interstitial fluid oncotic pressure (\(\pi _{if}\)) via lymphatic vessel hyper-
filtration.
Correct Answer: C
Rationale: Malnutrition leads to hypoalbuminemia because the liver lacks the amino acids
needed to synthesize plasma proteins. Albumin provides the primary osmotic pulling force
(\(\pi _{c}\)) that keeps water inside the vascular compartment. When capillary oncotic
pressure drops, fluid is no longer reabsorbed at the venular end of the capillary bed, leaking
into the interstitial spaces and causing severe edema and ascites.
Q4. A client with severe hyperparathyroidism develops a serum calcium level of 12.8
mg/dL. Which neuromuscular manifestation should the nurse anticipate based on the
pathophysiology of this electrolyte imbalance?
