when dehydration begins to occur

ATI RN

ATI Fluid and Electrolytes

1. When does dehydration begin to occur?

A. the body reduces fluid output to zero.
B. the body increases the release of ANH.
C. the salivary secretions decrease.
D. the salivary secretions increase.

Correct answer: C

Rationale: Dehydration leads to a decrease in the body's fluid levels, causing the salivary glands to produce less saliva, resulting in a dry mouth. Therefore, when dehydration begins to occur, salivary secretions decrease. Choice A is incorrect because the body does not reduce fluid output to zero during dehydration; it tries to conserve fluids. Choice B is incorrect as dehydration does not directly increase the release of ANH (Atrial Natriuretic Hormone). Choice D is incorrect because salivary secretions do not increase but decrease during dehydration.

2. A nurse is caring for a client who is having a subclavian central venous catheter inserted. The client begins to report chest pain and difficulty breathing. After administering oxygen, which action should the nurse take next?

A. Administer a sublingual nitroglycerin tablet
B. Prepare to assist with chest tube insertion.
C. . Place a sterile dressing over the IV site
D. Re-position the client into the Trendelenburg position.

Correct answer: B

Rationale:

3. A nurse is planning care for a client who is hyperventilating. The clients arterial blood gas values are pH 7.30, PaO2 94 mm Hg, PaCO2 31 mm Hg, and HCO3 26 mEq/L. Which question should the nurse ask when developing this clients plan of care?

A. Do you take any over-the-counter medications?
B. You appear anxious. What is causing your distress?
C. Do you have a history of anxiety attacks?
D. You are breathing fast. Is this causing you to feel light-headed?

Correct answer: B

Rationale:

4. Diagnostic testing has been ordered to differentiate between normal anion gap acidosis and high anion gap acidosis in an acutely ill patient. What health problem typically precedes normal anion gap acidosis?

A. Metastases
B. Excessive potassium intake
C. Water intoxication
D. Excessive administration of chloride

Correct answer: D

Rationale:

5. Who would have the greatest percentage of body water?

A. an obese male
B. a nonobese male
C. a nonobese female
D. a newborn

Correct answer: D

Rationale: Newborns have a higher percentage of body water compared to adults due to their higher body fluid content. Factors such as the higher ratio of body surface area to body volume and lower body fat content contribute to this. This is why a newborn would have the greatest percentage of body water. Choices A, B, and C are incorrect because obesity and gender do not determine the percentage of body water in individuals. Therefore, the correct answer is a newborn.