RBC 2 Test Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A 65-year-old patient presents with sudden shortness of breath,
chest pain, and a history of DVT. What is the most likely diagnosis?
A. Pneumonia
B. Myocardial infarction
C. Pulmonary embolism
D. Asthma
C. Pulmonary embolism
Rationale: Sudden onset dyspnea, pleuritic chest pain, and history
of DVT are classic signs of a pulmonary embolism.
2. Which lab value is most critical to monitor in a patient receiving
warfarin therapy?
A. Platelet count
B. INR
C. Hemoglobin
D. WBC count
B. INR
Rationale: INR measures coagulation and guides warfarin dosing
to prevent bleeding or clotting.
3. What is the primary nursing intervention for a patient with
hypovolemic shock?
A. Administer diuretics
, B. Provide IV fluids
C. Encourage bed rest
D. Administer oxygen only
B. Provide IV fluids
Rationale: Hypovolemic shock is caused by fluid loss; rapid IV fluid
replacement restores perfusion.
4. Which electrolyte imbalance is associated with peaked T waves on
ECG?
A. Hypokalemia
B. Hyperkalemia
C. Hypocalcemia
D. Hypernatremia
B. Hyperkalemia
Rationale: Elevated potassium levels cause characteristic peaked T
waves on ECG.
5. A patient with chronic kidney disease is most at risk for which
electrolyte imbalance?
A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypercalcemia
B. Hyperkalemia
Rationale: Impaired kidney function reduces potassium excretion,
increasing risk for hyperkalemia.
6. What is the first-line treatment for anaphylaxis?
A. Corticosteroids
B. Antihistamines
, C. Epinephrine
D. Oxygen therapy
C. Epinephrine
Rationale: Epinephrine reverses airway constriction and
hypotension during anaphylaxis.
7. A 72-year-old patient with heart failure develops sudden weight
gain and edema. What is the priority intervention?
A. Administer diuretics
B. Restrict fluids
C. Elevate legs
D. Encourage ambulation
A. Administer diuretics
Rationale: Sudden weight gain and edema indicate fluid overload;
diuretics help remove excess fluid.
8. Which heart sound is commonly heard in left-sided heart failure?
A. S1
B. S2
C. S3
D. S4
C. S3
Rationale: An S3 heart sound, or "ventricular gallop," indicates
increased left ventricular filling pressure.
9. Which is the primary cause of type 1 diabetes mellitus?
A. Obesity
B. Autoimmune destruction of beta cells
C. Insulin resistance
D. Sedentary lifestyle
, B. Autoimmune destruction of beta cells
Rationale: Type 1 diabetes is an autoimmune condition leading to
insulin deficiency.
10. A patient with type 2 diabetes presents with fruity breath,
nausea, and vomiting. Which condition is most likely?
A. Hypoglycemia
B. Diabetic ketoacidosis (DKA)
C. Hyperosmolar hyperglycemic state (HHS)
D. Lactic acidosis
B. Diabetic ketoacidosis (DKA)
Rationale: Fruity breath and vomiting are classic signs of DKA due
to ketone accumulation.
11. Which is the earliest sign of hypoxia in a hospitalized
patient?
A. Cyanosis
B. Confusion
C. Tachycardia
D. Bradycardia
C. Tachycardia
Rationale: The body initially compensates for low oxygen with
increased heart rate before cyanosis or mental changes.
12. What is the most appropriate nursing action for a patient
with a nasogastric tube experiencing nausea?
A. Reposition tube
B. Clamp tube
C. Irrigate tube
D. Assess tube placement and patency
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A 65-year-old patient presents with sudden shortness of breath,
chest pain, and a history of DVT. What is the most likely diagnosis?
A. Pneumonia
B. Myocardial infarction
C. Pulmonary embolism
D. Asthma
C. Pulmonary embolism
Rationale: Sudden onset dyspnea, pleuritic chest pain, and history
of DVT are classic signs of a pulmonary embolism.
2. Which lab value is most critical to monitor in a patient receiving
warfarin therapy?
A. Platelet count
B. INR
C. Hemoglobin
D. WBC count
B. INR
Rationale: INR measures coagulation and guides warfarin dosing
to prevent bleeding or clotting.
3. What is the primary nursing intervention for a patient with
hypovolemic shock?
A. Administer diuretics
, B. Provide IV fluids
C. Encourage bed rest
D. Administer oxygen only
B. Provide IV fluids
Rationale: Hypovolemic shock is caused by fluid loss; rapid IV fluid
replacement restores perfusion.
4. Which electrolyte imbalance is associated with peaked T waves on
ECG?
A. Hypokalemia
B. Hyperkalemia
C. Hypocalcemia
D. Hypernatremia
B. Hyperkalemia
Rationale: Elevated potassium levels cause characteristic peaked T
waves on ECG.
5. A patient with chronic kidney disease is most at risk for which
electrolyte imbalance?
A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypercalcemia
B. Hyperkalemia
Rationale: Impaired kidney function reduces potassium excretion,
increasing risk for hyperkalemia.
6. What is the first-line treatment for anaphylaxis?
A. Corticosteroids
B. Antihistamines
, C. Epinephrine
D. Oxygen therapy
C. Epinephrine
Rationale: Epinephrine reverses airway constriction and
hypotension during anaphylaxis.
7. A 72-year-old patient with heart failure develops sudden weight
gain and edema. What is the priority intervention?
A. Administer diuretics
B. Restrict fluids
C. Elevate legs
D. Encourage ambulation
A. Administer diuretics
Rationale: Sudden weight gain and edema indicate fluid overload;
diuretics help remove excess fluid.
8. Which heart sound is commonly heard in left-sided heart failure?
A. S1
B. S2
C. S3
D. S4
C. S3
Rationale: An S3 heart sound, or "ventricular gallop," indicates
increased left ventricular filling pressure.
9. Which is the primary cause of type 1 diabetes mellitus?
A. Obesity
B. Autoimmune destruction of beta cells
C. Insulin resistance
D. Sedentary lifestyle
, B. Autoimmune destruction of beta cells
Rationale: Type 1 diabetes is an autoimmune condition leading to
insulin deficiency.
10. A patient with type 2 diabetes presents with fruity breath,
nausea, and vomiting. Which condition is most likely?
A. Hypoglycemia
B. Diabetic ketoacidosis (DKA)
C. Hyperosmolar hyperglycemic state (HHS)
D. Lactic acidosis
B. Diabetic ketoacidosis (DKA)
Rationale: Fruity breath and vomiting are classic signs of DKA due
to ketone accumulation.
11. Which is the earliest sign of hypoxia in a hospitalized
patient?
A. Cyanosis
B. Confusion
C. Tachycardia
D. Bradycardia
C. Tachycardia
Rationale: The body initially compensates for low oxygen with
increased heart rate before cyanosis or mental changes.
12. What is the most appropriate nursing action for a patient
with a nasogastric tube experiencing nausea?
A. Reposition tube
B. Clamp tube
C. Irrigate tube
D. Assess tube placement and patency
