--The Ultimate ATI RN Concept-Based
Level 3 Proctored 2025/2026 Mastery
Blueprint: High-Fidelity Practice
Questions with Step-by-Step Clinical
Rationales, Prioritization Frameworks,
and NGN-Ready Strategies for a
Guaranteed A+ Grade."-
## SECTION 1: CARDIOVASCULAR DISORDERS (Questions 1–20)
**QUESTION 1**
A client with heart failure has 2+ pitting edema in the lower extremities. Which
intervention should the nurse implement first?
A) Administer a diuretic as prescribed
B) Elevate the head of the bed
C) Encourage ambulation
D) Restrict fluid intake
**Answer: A) Administer a diuretic as prescribed**
**Rationale:** Administering a prescribed diuretic addresses fluid overload,
which is the priority in managing heart failure with edema. While elevating the
head of the bed may help with breathing and fluid restriction may be part of the
,plan, pharmacological intervention to remove excess fluid is the most direct and
immediate action.
**QUESTION 2**
Which lab value indicates effective anticoagulant therapy with warfarin?
A) INR 1.0
B) INR 2.5
C) PT 10 seconds
D) Platelets 250,000/mm³
**Answer: B) INR 2.5**
**Rationale:** The therapeutic INR range for most indications (atrial fibrillation,
DVT, pulmonary embolism) is 2–3. An INR of 2.5 falls within this therapeutic
window. INR 1.0 is subtherapeutic, and PT without INR standardization is not
reliable for monitoring warfarin.
**QUESTION 3**
A client receiving morphine via PCA becomes difficult to arouse, with a respiratory
rate of 8 breaths/min. Which action should the nurse perform first?
A) Administer naloxone
B) Notify the provider
C) Stop the PCA infusion
D) Apply supplemental oxygen
**Answer: C) Stop the PCA infusion**
,**Rationale:** The priority action is to stop the morphine infusion to prevent
further respiratory depression. After stopping the infusion, the nurse should then
administer naloxone (an opioid antagonist) and notify the provider. The ABCs
(Airway, Breathing, Circulation) guide prioritization—stopping the source of the
problem comes first.
**QUESTION 4**
A client is prescribed furosemide. Which electrolyte imbalance is most concerning
for a patient on furosemide?
A) Hypernatremia
B) Hypokalemia
C) Hypercalcemia
D) Hypophosphatemia
**Answer: B) Hypokalemia**
**Rationale:** Furosemide is a loop diuretic that causes potassium wasting.
Hypokalemia can lead to cardiac arrhythmias, making it the most concerning
electrolyte imbalance.
**QUESTION 5**
A nurse is caring for a client who is receiving heparin therapy and has an aPTT of
92 seconds. Which medication should the nurse anticipate the provider might
prescribe?
A) Leucovorin
B) Vitamin K
C) Deferoxamine
D) Protamine sulfate
, **Answer: D) Protamine sulfate**
**Rationale:** Protamine sulfate is the specific antidote for heparin. An aPTT of
92 seconds is significantly elevated (therapeutic range is typically 60–80 seconds
for heparin), indicating a risk of bleeding.
**QUESTION 6**
A client with angina is prescribed nitroglycerin sublingually. Which instruction
should the nurse include in the teaching?
A) "Take one tablet every 15 minutes for up to three doses."
B) "Chew the tablet thoroughly before swallowing."
C) "Swallow the tablet whole with a full glass of water."
D) "Place the tablet under your tongue and allow it to dissolve."
**Answer: D) "Place the tablet under your tongue and allow it to dissolve."**
**Rationale:** Nitroglycerin is administered sublingually for rapid absorption. It
should not be chewed or swallowed. The standard protocol is one tablet every 5
minutes for up to three doses; if pain persists, seek emergency care.
**QUESTION 7**
Which of the following findings is an early sign of left-sided heart failure?
A) Jugular venous distention
B) Peripheral edema
C) Crackles in the lung bases
D) Hepatomegaly
Level 3 Proctored 2025/2026 Mastery
Blueprint: High-Fidelity Practice
Questions with Step-by-Step Clinical
Rationales, Prioritization Frameworks,
and NGN-Ready Strategies for a
Guaranteed A+ Grade."-
## SECTION 1: CARDIOVASCULAR DISORDERS (Questions 1–20)
**QUESTION 1**
A client with heart failure has 2+ pitting edema in the lower extremities. Which
intervention should the nurse implement first?
A) Administer a diuretic as prescribed
B) Elevate the head of the bed
C) Encourage ambulation
D) Restrict fluid intake
**Answer: A) Administer a diuretic as prescribed**
**Rationale:** Administering a prescribed diuretic addresses fluid overload,
which is the priority in managing heart failure with edema. While elevating the
head of the bed may help with breathing and fluid restriction may be part of the
,plan, pharmacological intervention to remove excess fluid is the most direct and
immediate action.
**QUESTION 2**
Which lab value indicates effective anticoagulant therapy with warfarin?
A) INR 1.0
B) INR 2.5
C) PT 10 seconds
D) Platelets 250,000/mm³
**Answer: B) INR 2.5**
**Rationale:** The therapeutic INR range for most indications (atrial fibrillation,
DVT, pulmonary embolism) is 2–3. An INR of 2.5 falls within this therapeutic
window. INR 1.0 is subtherapeutic, and PT without INR standardization is not
reliable for monitoring warfarin.
**QUESTION 3**
A client receiving morphine via PCA becomes difficult to arouse, with a respiratory
rate of 8 breaths/min. Which action should the nurse perform first?
A) Administer naloxone
B) Notify the provider
C) Stop the PCA infusion
D) Apply supplemental oxygen
**Answer: C) Stop the PCA infusion**
,**Rationale:** The priority action is to stop the morphine infusion to prevent
further respiratory depression. After stopping the infusion, the nurse should then
administer naloxone (an opioid antagonist) and notify the provider. The ABCs
(Airway, Breathing, Circulation) guide prioritization—stopping the source of the
problem comes first.
**QUESTION 4**
A client is prescribed furosemide. Which electrolyte imbalance is most concerning
for a patient on furosemide?
A) Hypernatremia
B) Hypokalemia
C) Hypercalcemia
D) Hypophosphatemia
**Answer: B) Hypokalemia**
**Rationale:** Furosemide is a loop diuretic that causes potassium wasting.
Hypokalemia can lead to cardiac arrhythmias, making it the most concerning
electrolyte imbalance.
**QUESTION 5**
A nurse is caring for a client who is receiving heparin therapy and has an aPTT of
92 seconds. Which medication should the nurse anticipate the provider might
prescribe?
A) Leucovorin
B) Vitamin K
C) Deferoxamine
D) Protamine sulfate
, **Answer: D) Protamine sulfate**
**Rationale:** Protamine sulfate is the specific antidote for heparin. An aPTT of
92 seconds is significantly elevated (therapeutic range is typically 60–80 seconds
for heparin), indicating a risk of bleeding.
**QUESTION 6**
A client with angina is prescribed nitroglycerin sublingually. Which instruction
should the nurse include in the teaching?
A) "Take one tablet every 15 minutes for up to three doses."
B) "Chew the tablet thoroughly before swallowing."
C) "Swallow the tablet whole with a full glass of water."
D) "Place the tablet under your tongue and allow it to dissolve."
**Answer: D) "Place the tablet under your tongue and allow it to dissolve."**
**Rationale:** Nitroglycerin is administered sublingually for rapid absorption. It
should not be chewed or swallowed. The standard protocol is one tablet every 5
minutes for up to three doses; if pain persists, seek emergency care.
**QUESTION 7**
Which of the following findings is an early sign of left-sided heart failure?
A) Jugular venous distention
B) Peripheral edema
C) Crackles in the lung bases
D) Hepatomegaly
