NR 547 Midterm Exam Study Pack | Verified Questions
Correct Answers & Detailed Rationales | Latest Update
2026/2027 Frequently Most Tested Questions and
100% Accurate From Past papers | Graded A+ ,
Reviewed and Updated | 100% Guarantee Pass | Latest
Exam and Newest Version!!!
A provider is formulating an initial hypothesis during a differential diagnosis. What does
this initial hypothesis represent?
a. A definitive diagnosis based on the client's presenting symptoms
b. A working list of potential problems that may be associated with the initial or chief
complaint
c. A final determination of the client's primary psychiatric condition
d. A summary of the client's past medical history
✔️ Correct Answer: B
Rationale:
The initial hypothesis in a differential diagnosis is a working list of potential problems
that may be associated with the client's chief complaint. This list guides further
assessment and diagnostic testing. It is not a definitive diagnosis (A), a final
determination (C), or a summary of past history (D).
,A psychiatric provider is using the DSM-5-TR to guide clinical practice. What does the
DSM-5-TR primarily provide?
a. Treatment algorithms for psychiatric disorders
b. Guidance for identifying psychiatric diagnoses
c. Medication dosing guidelines
d. Psychotherapy techniques
✔️ Correct Answer: B
Rationale:
The DSM-5-TR provides standardized diagnostic criteria for psychiatric disorders,
enabling clinicians to accurately identify and classify mental health conditions. It does
not provide treatment algorithms (A), medication dosing (C), or psychotherapy
techniques (D).
A patient with chronic kidney disease has a serum potassium level of 6.5 mEq/L. Which
action should the nurse prioritize?
a. Administer a potassium supplement as prescribed
b. Place the patient on a cardiac monitor
c. Encourage the patient to eat high-potassium foods
d. Obtain an order for intravenous fluids
✔️ Correct Answer: B
Rationale:
Hyperkalemia (serum potassium >5.0 mEq/L) can cause life-threatening cardiac
arrhythmias. Continuous cardiac monitoring is the priority before any other intervention.
Option A would worsen the condition. Option C is contraindicated. Option D may be
appropriate but is not the priority.
Which pathophysiological mechanism is primarily responsible for the development of
metabolic acidosis in diabetic ketoacidosis (DKA)?
,a. Loss of bicarbonate through the kidneys
b. Accumulation of ketone bodies
c. Hypoventilation
d. Excess sodium retention
✔️ Correct Answer: B
Rationale:
In DKA, the accumulation of ketone bodies (acetoacetic acid, beta-hydroxybutyric acid)
decreases blood pH, causing metabolic acidosis. Option A describes renal tubular
acidosis. Option C causes respiratory acidosis. Option D is not a mechanism for
metabolic acidosis.
A patient with cirrhosis develops confusion and asterixis. Which laboratory value would
support a diagnosis of hepatic encephalopathy?
a. Serum ammonia 85 µmol/L
b. ALT 25 U/L
c. INR 1.0
d. Creatinine 0.9 mg/dL
✔️ Correct Answer: A
Rationale:
Elevated serum ammonia levels (>50 µmol/L) cross the blood-brain barrier and cause
neurotoxicity, leading to hepatic encephalopathy. Options B, C, and D are within normal
ranges and do not support this diagnosis.
Which class of antihypertensive medications reduces afterload by blocking the
conversion of angiotensin I to angiotensin II?
a. Beta-blockers
b. ACE inhibitors
c. Calcium channel blockers
d. Diuretics
✔️ Correct Answer: B
Rationale:
, ACE inhibitors prevent the conversion of angiotensin I to angiotensin II, reducing
systemic vasoconstriction and decreasing afterload. Beta-blockers (A) reduce heart rate
and contractility. Calcium channel blockers (C) cause vasodilation through a different
mechanism. Diuretics (D) reduce fluid volume.
A patient with sepsis presents with blood pressure 88/54 mmHg, heart rate 122
beats/min, and lactate 4.2 mmol/L. What is the immediate nursing action?
a. Administer IV fluids rapidly
b. Draw blood for cultures only
c. Give acetaminophen
d. Start antibiotics in 12 hours
✔️ Correct Answer: A
Rationale:
Early fluid resuscitation is critical in septic shock to restore tissue perfusion. A lactate
level >4 mmol/L indicates severe tissue hypoperfusion. Option B is important but should
follow fluid resuscitation. Option C does not address the underlying issue. Option D is
incorrect as antibiotics should be administered within 1 hour.
Which pathophysiological change occurs in chronic heart failure?
a. Decreased preload and afterload
b. Ventricular remodeling and dilation
c. Decreased sympathetic activation
d. Increased stroke volume
✔️ Correct Answer: B
Rationale:
Chronic heart failure leads to ventricular remodeling, including hypertrophy and dilation,
which impair cardiac output and increase arrhythmia risk. Option A is incorrect as
preload and afterload are typically elevated. Option C is incorrect because sympathetic
activation is increased. Option D is incorrect as stroke volume decreases.
Correct Answers & Detailed Rationales | Latest Update
2026/2027 Frequently Most Tested Questions and
100% Accurate From Past papers | Graded A+ ,
Reviewed and Updated | 100% Guarantee Pass | Latest
Exam and Newest Version!!!
A provider is formulating an initial hypothesis during a differential diagnosis. What does
this initial hypothesis represent?
a. A definitive diagnosis based on the client's presenting symptoms
b. A working list of potential problems that may be associated with the initial or chief
complaint
c. A final determination of the client's primary psychiatric condition
d. A summary of the client's past medical history
✔️ Correct Answer: B
Rationale:
The initial hypothesis in a differential diagnosis is a working list of potential problems
that may be associated with the client's chief complaint. This list guides further
assessment and diagnostic testing. It is not a definitive diagnosis (A), a final
determination (C), or a summary of past history (D).
,A psychiatric provider is using the DSM-5-TR to guide clinical practice. What does the
DSM-5-TR primarily provide?
a. Treatment algorithms for psychiatric disorders
b. Guidance for identifying psychiatric diagnoses
c. Medication dosing guidelines
d. Psychotherapy techniques
✔️ Correct Answer: B
Rationale:
The DSM-5-TR provides standardized diagnostic criteria for psychiatric disorders,
enabling clinicians to accurately identify and classify mental health conditions. It does
not provide treatment algorithms (A), medication dosing (C), or psychotherapy
techniques (D).
A patient with chronic kidney disease has a serum potassium level of 6.5 mEq/L. Which
action should the nurse prioritize?
a. Administer a potassium supplement as prescribed
b. Place the patient on a cardiac monitor
c. Encourage the patient to eat high-potassium foods
d. Obtain an order for intravenous fluids
✔️ Correct Answer: B
Rationale:
Hyperkalemia (serum potassium >5.0 mEq/L) can cause life-threatening cardiac
arrhythmias. Continuous cardiac monitoring is the priority before any other intervention.
Option A would worsen the condition. Option C is contraindicated. Option D may be
appropriate but is not the priority.
Which pathophysiological mechanism is primarily responsible for the development of
metabolic acidosis in diabetic ketoacidosis (DKA)?
,a. Loss of bicarbonate through the kidneys
b. Accumulation of ketone bodies
c. Hypoventilation
d. Excess sodium retention
✔️ Correct Answer: B
Rationale:
In DKA, the accumulation of ketone bodies (acetoacetic acid, beta-hydroxybutyric acid)
decreases blood pH, causing metabolic acidosis. Option A describes renal tubular
acidosis. Option C causes respiratory acidosis. Option D is not a mechanism for
metabolic acidosis.
A patient with cirrhosis develops confusion and asterixis. Which laboratory value would
support a diagnosis of hepatic encephalopathy?
a. Serum ammonia 85 µmol/L
b. ALT 25 U/L
c. INR 1.0
d. Creatinine 0.9 mg/dL
✔️ Correct Answer: A
Rationale:
Elevated serum ammonia levels (>50 µmol/L) cross the blood-brain barrier and cause
neurotoxicity, leading to hepatic encephalopathy. Options B, C, and D are within normal
ranges and do not support this diagnosis.
Which class of antihypertensive medications reduces afterload by blocking the
conversion of angiotensin I to angiotensin II?
a. Beta-blockers
b. ACE inhibitors
c. Calcium channel blockers
d. Diuretics
✔️ Correct Answer: B
Rationale:
, ACE inhibitors prevent the conversion of angiotensin I to angiotensin II, reducing
systemic vasoconstriction and decreasing afterload. Beta-blockers (A) reduce heart rate
and contractility. Calcium channel blockers (C) cause vasodilation through a different
mechanism. Diuretics (D) reduce fluid volume.
A patient with sepsis presents with blood pressure 88/54 mmHg, heart rate 122
beats/min, and lactate 4.2 mmol/L. What is the immediate nursing action?
a. Administer IV fluids rapidly
b. Draw blood for cultures only
c. Give acetaminophen
d. Start antibiotics in 12 hours
✔️ Correct Answer: A
Rationale:
Early fluid resuscitation is critical in septic shock to restore tissue perfusion. A lactate
level >4 mmol/L indicates severe tissue hypoperfusion. Option B is important but should
follow fluid resuscitation. Option C does not address the underlying issue. Option D is
incorrect as antibiotics should be administered within 1 hour.
Which pathophysiological change occurs in chronic heart failure?
a. Decreased preload and afterload
b. Ventricular remodeling and dilation
c. Decreased sympathetic activation
d. Increased stroke volume
✔️ Correct Answer: B
Rationale:
Chronic heart failure leads to ventricular remodeling, including hypertrophy and dilation,
which impair cardiac output and increase arrhythmia risk. Option A is incorrect as
preload and afterload are typically elevated. Option C is incorrect because sympathetic
activation is increased. Option D is incorrect as stroke volume decreases.
