NURSING 500 TEST BANK QUESTIONS//
ANSWERS// RATIONALES 100% CORRECT
ANSWERS // 2025
Question 1:
What is the most effective way to prevent the spread of infections in a healthcare
setting?
A. Wearing gloves at all times
B. Proper hand hygiene
C. Using antimicrobial wipes on all surfaces
D. Administering antibiotics to all patients
Answer:
B. Proper hand hygiene
Rationale:
Hand hygiene is the single most effective way to prevent the spread of infections.
Proper washing or sanitizing of hands removes pathogens and decreases the risk of
transmitting infections between patients, staff, and visitors.
Question 2:
A patient with severe vomiting is at risk for which electrolyte imbalance?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypophosphatemia
Answer:
B. Hypokalemia
,Rationale:
Severe vomiting leads to the loss of gastric contents, which are rich in potassium.
This results in hypokalemia, characterized by muscle weakness, arrhythmias, and
fatigue.
Topic: Cardiovascular System
Question 3:
Which is the priority nursing intervention for a patient experiencing chest pain?
A. Administer prescribed nitroglycerin
B. Perform a 12-lead electrocardiogram (ECG)
C. Monitor blood pressure
D. Place the patient in a supine position
Answer:
A. Administer prescribed nitroglycerin
Rationale:
Nitroglycerin helps dilate coronary arteries and improve blood flow, relieving
chest pain caused by myocardial ischemia. While performing an ECG and
monitoring blood pressure are important, relieving pain and preventing further
damage is the priority.
Question 4:
Which of the following is a hallmark symptom of type 1 diabetes mellitus?
A. Gradual weight gain
B. Polyuria, polydipsia, and polyphagia
C. Nausea and vomiting
D. Vision changes
Answer:
B. Polyuria, polydipsia, and polyphagia
Rationale:
These three "Ps" (polyuria, polydipsia, polyphagia) are classic signs of type 1
diabetes. They occur due to hyperglycemia, osmotic diuresis, and the body’s
inability to utilize glucose effectively.
,Question 5:
A nurse is caring for a patient with pneumonia. Which assessment finding is most
concerning?
A. Productive cough with green sputum
B. Respiratory rate of 28 breaths per minute
C. Oxygen saturation of 88% on room air
D. Crackles heard on auscultation
Answer:
C. Oxygen saturation of 88% on room air
Rationale:
An oxygen saturation of 88% indicates hypoxemia, which requires immediate
intervention to prevent further complications such as respiratory failure. Other
symptoms, while concerning, are expected findings in pneumonia.
Question 6:
What is a common early sign of acute kidney injury (AKI)?
A. Hypercalcemia
B. Oliguria
C. Increased hematocrit
D. Hypotension
Answer:
B. Oliguria
Rationale:
Oliguria, defined as a urine output of less than 400 mL/day, is a hallmark early
sign of AKI. It reflects reduced kidney function and the body’s inability to
eliminate waste effectively.
Topic: Neurological System
Question 7:
A patient is admitted with a suspected stroke. What is the priority assessment?
, A. Pupil size and reaction to light
B. Airway, breathing, and circulation
C. Blood pressure monitoring
D. Reflex assessment
Answer:
B. Airway, breathing, and circulation
Rationale:
In any emergency situation, the priority is to assess and secure airway, breathing,
and circulation (ABCs). Compromised airway or breathing in a stroke patient can
lead to further brain damage or death.
Question 8:
What is the best position for a patient experiencing shortness of breath?
A. Supine position
B. Trendelenburg position
C. High Fowler’s position
D. Prone position
Answer:
C. High Fowler’s position
Rationale:
High Fowler’s position (sitting upright) allows for maximal lung expansion and
improves oxygenation by reducing the pressure on the diaphragm, making it easier
for the patient to breathe.
Question 9:
Which of the following lab values is most concerning in a patient receiving
furosemide (Lasix)?
A. Sodium 140 mEq/L
B. Potassium 3.0 mEq/L
C. Chloride 100 mEq/L
D. Calcium 9.0 mg/dL