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NSG 3850 MIDTERM EXAM PATHOPHYSIOLOGY FOR NURSES
II – MIDTERM EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES | ALREADY GRADED
A+||BRAND NEW VERSION!!.
1.
A 68-year-old patient with a long history of poorly controlled hypertension is
admitted with progressive fatigue, bilateral lower-extremity edema, decreased
urine output, and shortness of breath that has worsened over several months.
Laboratory testing reveals an elevated serum creatinine and blood urea nitrogen,
while the estimated glomerular filtration rate is significantly decreased. The nurse
recognizes that the patient's symptoms are most consistent with progressive loss of
functioning renal tissue. Which pathophysiologic process best explains the patient's
condition?
A. Acute tubular necrosis caused by a transient reduction in renal perfusion
B. Chronic kidney disease caused by progressive nephron loss and compensatory
hyperfiltration
C. Nephrotic syndrome caused exclusively by increased glomerular permeability
D. Postrenal obstruction caused by an acute blockage of the urethra
Answer: B
2.
A patient with chronic obstructive pulmonary disease has experienced increasing
dyspnea, chronic productive cough, and worsening exercise intolerance over
several years. Arterial blood gas analysis demonstrates an elevated PaCO₂ and an
elevated bicarbonate concentration, indicating that the kidneys have attempted to
compensate for a persistent respiratory abnormality. Which acid-base disturbance
is most likely present?
A. Uncompensated metabolic acidosis
B. Compensated respiratory acidosis
C. Uncompensated respiratory alkalosis
D. Compensated metabolic alkalosis
,2
Answer: B
3.
A 54-year-old patient with a history of myocardial infarction develops worsening
fatigue, orthopnea, paroxysmal nocturnal dyspnea, and bilateral dependent edema.
Echocardiography demonstrates reduced left ventricular contractility and a
decreased ejection fraction. The nurse understands that activation of compensatory
neurohormonal mechanisms may initially maintain cardiac output but eventually
contribute to worsening ventricular dysfunction. Which mechanism is primarily
responsible for this progression?
A. Persistent suppression of sympathetic nervous system activity
B. Activation of the renin-angiotensin-aldosterone system with sodium and water
retention
C. Increased parasympathetic stimulation resulting in severe vasodilation
D. Complete inhibition of antidiuretic hormone release
Answer: B
4.
A 72-year-old patient suddenly develops facial drooping, unilateral arm weakness,
difficulty speaking, and confusion while eating breakfast. The symptoms began
approximately 30 minutes before arrival at the emergency department. The nurse
recognizes that the neurologic deficits may result from interruption of cerebral
blood flow to a specific vascular territory. Which pathophysiologic event is most
likely responsible?
A. Cerebral ischemia resulting from an arterial thrombus or embolus
B. Diffuse demyelination of peripheral nerves
C. Increased cerebrospinal fluid production causing hydrocephalus
D. Degeneration of dopamine-producing neurons in the substantia nigra
Answer: A
,3
5.
A patient with severe vomiting for several days develops weakness, muscle
cramps, dizziness, and cardiac dysrhythmias. Laboratory testing demonstrates a
significantly decreased serum potassium concentration. The nurse understands that
potassium is essential for normal neuromuscular and cardiac electrical activity.
Which cellular consequence is most closely associated with significant
hypokalemia?
A. Increased extracellular potassium causing persistent depolarization
B. Altered resting membrane potential with increased cellular excitability
abnormalities
C. Complete inhibition of sodium movement across all cell membranes
D. Increased calcium deposition within skeletal muscle cells
Answer: B
6.
A 45-year-old patient with a history of chronic alcohol misuse presents with severe
epigastric pain radiating to the back, nausea, vomiting, and elevated serum lipase.
Imaging reveals inflammation of the pancreas. Which pathophysiologic
mechanism is most directly associated with acute pancreatitis?
A. Premature activation of pancreatic digestive enzymes within the pancreas
B. Complete inhibition of pancreatic enzyme secretion
C. Excessive bile production causing direct destruction of pancreatic tissue
D. Autoimmune destruction of the pancreatic islets exclusively
Answer: A
7.
A patient with severe liver disease develops confusion, personality changes, altered
level of consciousness, and a flapping tremor when the hands are extended. The
nurse recognizes that these neurologic findings are associated with accumulation of
, 4
substances that the damaged liver can no longer adequately detoxify. Which
substance is particularly implicated in this condition?
A. Ammonia
B. Sodium
C. Calcium
D. Albumin
Answer: A
8.
A 36-year-old patient presents with polyuria, polydipsia, fatigue, blurred vision,
and an unexplained 10-kg weight loss over the previous two months. Laboratory
studies reveal markedly elevated blood glucose and the presence of ketones. Which
pathophysiologic process best explains the patient's symptoms?
A. Excessive insulin activity causing intracellular glucose accumulation
B. Insulin deficiency or ineffective insulin action causing hyperglycemia and
increased fat breakdown
C. Increased glucose uptake by skeletal muscle causing cellular starvation
D. Excessive aldosterone secretion causing glucose loss through the kidneys
Answer: B
9.
A patient with diabetic ketoacidosis presents with deep, rapid respirations,
dehydration, nausea, abdominal pain, and altered mental status. Arterial blood gas
analysis demonstrates a low pH and low bicarbonate level. Which respiratory
response would the nurse expect as the body attempts to compensate?
A. Slow, shallow respirations
B. Complete cessation of respiratory activity
C. Deep and rapid respirations to eliminate carbon dioxide
D. Decreased respiratory rate to conserve bicarbonate
NSG 3850 MIDTERM EXAM PATHOPHYSIOLOGY FOR NURSES
II – MIDTERM EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES | ALREADY GRADED
A+||BRAND NEW VERSION!!.
1.
A 68-year-old patient with a long history of poorly controlled hypertension is
admitted with progressive fatigue, bilateral lower-extremity edema, decreased
urine output, and shortness of breath that has worsened over several months.
Laboratory testing reveals an elevated serum creatinine and blood urea nitrogen,
while the estimated glomerular filtration rate is significantly decreased. The nurse
recognizes that the patient's symptoms are most consistent with progressive loss of
functioning renal tissue. Which pathophysiologic process best explains the patient's
condition?
A. Acute tubular necrosis caused by a transient reduction in renal perfusion
B. Chronic kidney disease caused by progressive nephron loss and compensatory
hyperfiltration
C. Nephrotic syndrome caused exclusively by increased glomerular permeability
D. Postrenal obstruction caused by an acute blockage of the urethra
Answer: B
2.
A patient with chronic obstructive pulmonary disease has experienced increasing
dyspnea, chronic productive cough, and worsening exercise intolerance over
several years. Arterial blood gas analysis demonstrates an elevated PaCO₂ and an
elevated bicarbonate concentration, indicating that the kidneys have attempted to
compensate for a persistent respiratory abnormality. Which acid-base disturbance
is most likely present?
A. Uncompensated metabolic acidosis
B. Compensated respiratory acidosis
C. Uncompensated respiratory alkalosis
D. Compensated metabolic alkalosis
,2
Answer: B
3.
A 54-year-old patient with a history of myocardial infarction develops worsening
fatigue, orthopnea, paroxysmal nocturnal dyspnea, and bilateral dependent edema.
Echocardiography demonstrates reduced left ventricular contractility and a
decreased ejection fraction. The nurse understands that activation of compensatory
neurohormonal mechanisms may initially maintain cardiac output but eventually
contribute to worsening ventricular dysfunction. Which mechanism is primarily
responsible for this progression?
A. Persistent suppression of sympathetic nervous system activity
B. Activation of the renin-angiotensin-aldosterone system with sodium and water
retention
C. Increased parasympathetic stimulation resulting in severe vasodilation
D. Complete inhibition of antidiuretic hormone release
Answer: B
4.
A 72-year-old patient suddenly develops facial drooping, unilateral arm weakness,
difficulty speaking, and confusion while eating breakfast. The symptoms began
approximately 30 minutes before arrival at the emergency department. The nurse
recognizes that the neurologic deficits may result from interruption of cerebral
blood flow to a specific vascular territory. Which pathophysiologic event is most
likely responsible?
A. Cerebral ischemia resulting from an arterial thrombus or embolus
B. Diffuse demyelination of peripheral nerves
C. Increased cerebrospinal fluid production causing hydrocephalus
D. Degeneration of dopamine-producing neurons in the substantia nigra
Answer: A
,3
5.
A patient with severe vomiting for several days develops weakness, muscle
cramps, dizziness, and cardiac dysrhythmias. Laboratory testing demonstrates a
significantly decreased serum potassium concentration. The nurse understands that
potassium is essential for normal neuromuscular and cardiac electrical activity.
Which cellular consequence is most closely associated with significant
hypokalemia?
A. Increased extracellular potassium causing persistent depolarization
B. Altered resting membrane potential with increased cellular excitability
abnormalities
C. Complete inhibition of sodium movement across all cell membranes
D. Increased calcium deposition within skeletal muscle cells
Answer: B
6.
A 45-year-old patient with a history of chronic alcohol misuse presents with severe
epigastric pain radiating to the back, nausea, vomiting, and elevated serum lipase.
Imaging reveals inflammation of the pancreas. Which pathophysiologic
mechanism is most directly associated with acute pancreatitis?
A. Premature activation of pancreatic digestive enzymes within the pancreas
B. Complete inhibition of pancreatic enzyme secretion
C. Excessive bile production causing direct destruction of pancreatic tissue
D. Autoimmune destruction of the pancreatic islets exclusively
Answer: A
7.
A patient with severe liver disease develops confusion, personality changes, altered
level of consciousness, and a flapping tremor when the hands are extended. The
nurse recognizes that these neurologic findings are associated with accumulation of
, 4
substances that the damaged liver can no longer adequately detoxify. Which
substance is particularly implicated in this condition?
A. Ammonia
B. Sodium
C. Calcium
D. Albumin
Answer: A
8.
A 36-year-old patient presents with polyuria, polydipsia, fatigue, blurred vision,
and an unexplained 10-kg weight loss over the previous two months. Laboratory
studies reveal markedly elevated blood glucose and the presence of ketones. Which
pathophysiologic process best explains the patient's symptoms?
A. Excessive insulin activity causing intracellular glucose accumulation
B. Insulin deficiency or ineffective insulin action causing hyperglycemia and
increased fat breakdown
C. Increased glucose uptake by skeletal muscle causing cellular starvation
D. Excessive aldosterone secretion causing glucose loss through the kidneys
Answer: B
9.
A patient with diabetic ketoacidosis presents with deep, rapid respirations,
dehydration, nausea, abdominal pain, and altered mental status. Arterial blood gas
analysis demonstrates a low pH and low bicarbonate level. Which respiratory
response would the nurse expect as the body attempts to compensate?
A. Slow, shallow respirations
B. Complete cessation of respiratory activity
C. Deep and rapid respirations to eliminate carbon dioxide
D. Decreased respiratory rate to conserve bicarbonate
