Question

A nurse is reviewing the electrolyte panel of a patient who reports muscle cramps, tremors, and a positive Chvostek's sign. Based on this clinical presentation, which electrolyte imbalance is most concerning?

Answer 1

Correct Answers:

Low calcium level

Rationale :

🔹 Chvostek’s sign is a hallmark sign of hypocalcemia, caused by neuromuscular excitability.

🔹 Low calcium also produces tetany, cramps, and muscle spasms.

🔹 Calcium is essential for neuromuscular transmission and muscle relaxation.

🔹 Other electrolyte imbalances (Na, K, Phosphorus) do not trigger Chvostek’s sign.

🔹 Prompt recognition is critical to prevent laryngeal spasms and seizures.

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Answer 2

Correct Answers:

Cytotoxic T cells

Rationale :

🔸 Cytotoxic T cells (CD8+) directly destroy virus-infected cells.

🔸 They recognize antigens via the MHC class I pathway.

🔸 They induce apoptosis, protecting the body from cancer cell growth.

🔸 Antibodies (IgA, IgG) only tag pathogens, they don’t kill directly.

🔸 B cells produce antibodies but are not direct killers.

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Answer 3

Correct Answers:

The "Seroconversion" is the time in which an infected person converts from being negative for HIV antibodies in the blood, to being positive for HIV antibodies in the blood.

Rationale :

🟢 Seroconversion = period when HIV antibodies become detectable.

🟢 Opportunistic infections increase, not decrease, as CD4 falls.

🟢 HIV attacks CD4 T helper cells, not B memory cells.

🟢 A CD4 >1000 is normal; AIDS = CD4 <200 or opportunistic infections.

🟢 Early recognition helps identify the window period of HIV.

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Answer 4

Correct Answers:

Increased blood glucose

Rationale :

⚡ Epinephrine stimulates the liver to break down glycogen → glucose release.

⚡ Provides energy for fight-or-flight response.

⚡ Also causes bronchodilation, not bronchoconstriction.

⚡ Stress hormones speed up breathing (tachypnea), not bradypnea.

⚡ Water retention is mediated by aldosterone/ADH, not epinephrine.

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Answer 5

Correct Answers:

Intravascular fluid space

Rationale :

💧 Plasma is the liquid portion of blood, circulating in vessels.

💧 It contains water, electrolytes, proteins, and clotting factors.

💧 It belongs to the intravascular compartment.

💧 Interstitial fluid surrounds cells; intracellular fluid is inside cells.

💧 Plasma is essential for nutrient, oxygen, and waste transport.

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Answer 6

Correct Order:

Order : 1 : No answer text available
Order : 2 : No answer text available
Order : 3 : No answer text available
Order : 4 : No answer text available

Rationale :

🔹 Low BP triggers kidneys to release renin.

🔹 Renin converts angiotensinogen → angiotensin I.

🔹 Angiotensin I is converted to angiotensin II by ACE in lungs.

🔹 Angiotensin II causes vasoconstriction + aldosterone release → raises BP.

🔹 Final outcome = restored blood pressure.

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Answer 7

Correct Answers:

Vaccines stimulate production of antibodies.

Rationale :

🟢 Vaccines expose immune system to antigens, not full disease.

🟢 The body produces antibodies + memory cells.

🟢 Many vaccines require boosters to maintain immunity.

🟢 Some vaccines are live-attenuated, others inactivated—not all dead.

🟢 Vaccines provide active immunity, unlike passive immunity (antibody transfer).

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Answer 8

Correct Answers:

Hyperkalemia and Hypernatremia

Rationale :

🔸 Na+ high → hypernatremia = excessive thirst, dehydration signs.

🔸 K+ high → hyperkalemia = cardiac rhythm disturbances.

🔸 These can occur with renal impairment or dehydration.

🔸 Hypercalcemia would not match these findings.

🔸 Hypokalemia would show muscle weakness, not arrhythmia here.

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Answer 9

Correct Answers:

Osmotic pressure

Rationale :

💧 Water shifts follow osmotic gradients (high solute pulls water).

💧 Electrolyte concentration drives fluid across membranes.

💧 ADH regulates water retention, not direct movement.

💧 Chemical buffers regulate pH, not fluid distribution.

💧 Pulse pressure has no role in cellular water balance.

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Answer 10

Correct Answers:

Gastrointestinal (GI) tract, skin, and respiratory tract

Rationale :

🛡️ Skin = first line, physical barrier.

🛡️ GI tract has acidic gastric secretions & gut flora.

🛡️ Respiratory tract has cilia + mucus barrier.

🛡️ Together they form the largest defense system.

🛡️ GU and lymph contribute, but not the primary strongest set.

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NR412-EXAM 1

No.

1 :
A nurse is reviewing the electrolyte panel of a patient who reports muscle cramps, tremors, and a positive Chvostek's sign. Based on this clinical presentation, which electrolyte imbalance is most concerning?

2 :
Which immune cells are responsible for targeting and eliminating cancer cells and cells infected by viruses?

3 :
A group of student nurses are presenting on the topic of HIV/AIDs to their classmates. Which one of the following statements, if made by the student nurses, would be accurate?

4 :
Which physiologic change occurs when epinephrine is released during the stress response?

5 :
Where is blood plasma primarily found in the body?

6 :
Drag and drop the following steps into the correct order to show how the RAAS system responds to low blood pressure.

Available Items

Arrange Your Answers

7 :
What does the nurse include in patient education on a characteristic of vaccines?

9 :
How does water move between intracellular and extracellular compartments?

10 :
Which system(s) provide the best protection from damage and infection?

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NR412-EXAM 1

No.

1 : A nurse is reviewing the electrolyte panel of a patient who reports muscle cramps, tremors, and a positive Chvostek's sign. Based on this clinical presentation, which electrolyte imbalance is most concerning?

2 : Which immune cells are responsible for targeting and eliminating cancer cells and cells infected by viruses?

3 : A group of student nurses are presenting on the topic of HIV/AIDs to their classmates. Which one of the following statements, if made by the student nurses, would be accurate?

4 : Which physiologic change occurs when epinephrine is released during the stress response?

5 : Where is blood plasma primarily found in the body?

6 : Drag and drop the following steps into the correct order to show how the RAAS system responds to low blood pressure.

Available Items

Arrange Your Answers

7 : What does the nurse include in patient education on a characteristic of vaccines?

9 : How does water move between intracellular and extracellular compartments?

10 : Which system(s) provide the best protection from damage and infection?

1 :
A nurse is reviewing the electrolyte panel of a patient who reports muscle cramps, tremors, and a positive Chvostek's sign. Based on this clinical presentation, which electrolyte imbalance is most concerning?

2 :
Which immune cells are responsible for targeting and eliminating cancer cells and cells infected by viruses?

3 :
A group of student nurses are presenting on the topic of HIV/AIDs to their classmates. Which one of the following statements, if made by the student nurses, would be accurate?

4 :
Which physiologic change occurs when epinephrine is released during the stress response?

5 :
Where is blood plasma primarily found in the body?

6 :
Drag and drop the following steps into the correct order to show how the RAAS system responds to low blood pressure.

7 :
What does the nurse include in patient education on a characteristic of vaccines?

9 :
How does water move between intracellular and extracellular compartments?

10 :
Which system(s) provide the best protection from damage and infection?