ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who is experiencing an acid-base imbalance. The clients arterial blood gas values are pH 7.34, PaO2 88 mm Hg, PaCO2 38 mm Hg, and HCO3 19 mEq/L. Which assessment should the nurse perform first?
- A. . Cardiac rate and rhythm
- B. Skin and mucous membranes
- C. Musculoskeletal strength
- D. Level of orientation
Correct answer: . Cardiac rate and rhythm
Rationale:
2. Blood cells are produced in the organs of the _______ system.
- A. endocrine
- B. skeletal
- C. superior to
- D. inferior to
Correct answer: superior to
Rationale: Blood cells are produced in the organs of the hematopoietic system. The correct answer is 'superior to' as this refers to the location of the organs responsible for blood cell production, typically bone marrow found in bones such as the vertebrae, ribs, and skull. 'Endocrine' (Choice A) refers to a different system responsible for hormone production. 'Skeletal' (Choice B) relates to bones but not specifically to the production of blood cells. Choices C and D, 'superior to' and 'inferior to,' do not make sense in the context of blood cell production and are incorrect.
3. A healthcare provider is reviewing a client's lab results. Which of the following lab values should the provider report?
- A. Magnesium 1.9 mEq/L
- B. Potassium 3.6 mEq/L
- C. Sodium 126 mEq/L
- D. Chloride 99 mEq/L
Correct answer: C
Rationale: The correct answer is C: Sodium 126 mEq/L. A sodium level of 126 mEq/L is below the normal range, indicating hyponatremia, which can have serious health implications and should be reported to the healthcare provider for further evaluation and intervention. Choices A, B, and D are within or close to the normal ranges for magnesium, potassium, and chloride, respectively, and do not require immediate reporting as they are not significantly abnormal.
4. The nurse provides medication instructions to a client with peptic ulcer disease. Which statement, if made by the client, indicates the best understanding of the medication therapy?
- A. The cimetidine (Tagamet) will cause me to produce less stomach acid.
- B. Sucralfate (Carafate) will change the fluid in my stomach.
- C. Antacids will coat my stomach.
- D. Omeprazole (Prilosec) will coat the ulcer and help it heal.
Correct answer: A
Rationale: Cimetidine (Tagamet) works by reducing stomach acid production, which helps to manage peptic ulcer disease.
5. A child is experiencing difficulty with chewing and swallowing. The nurse knows that which cells may be innervating specialized gut-related receptors that provide taste and smell?
- A. Special somatic afferent fibers
- B. General somatic afferents
- C. Special visceral afferent cells
- D. General visceral afferent neurons
Correct answer: C
Rationale: The correct answer is C: Special visceral afferent cells. These cells are responsible for innervating taste and smell receptors related to the gut. Special somatic afferent fibers (choice A) are involved in sensations like touch and proprioception, not taste and smell. General somatic afferents (choice B) carry sensory information from the skin and musculoskeletal system, not taste and smell. General visceral afferent neurons (choice D) transmit sensory information from internal organs, but not specifically related to taste and smell sensations.
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