Nokea
The lungs regulate acid-base balance b₃y⁻ all of the following except:
- A. Excreting HCO into the blood
- B. Controlling carbon dioxide levels
- C. Slowing ventilation
- D. Increasing ventilation
Correct Answer: C
Rationale: The correct answer is C: Slowing ventilation. The lungs regulate acid-base balance by controlling carbon dioxide levels through ventilation. Increasing ventilation helps expel excess carbon dioxide, thus regulating pH. Slowing ventilation would lead to CO2 buildup and an imbalance in acid-base levels. Excreting HCO3- into the blood (choice A) helps maintain pH, while increasing ventilation (choice D) aids in removing excess CO2. Therefore, slowing ventilation is the exception as it would disrupt the acid-base balance by not effectively regulating carbon dioxide levels.
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Which of the following terms indicates that the patient has a hearing loss caused by aging?
- A. Otoplasty
- B. Presbycusis
- C. Otalgia
- D. Tinnitus
Correct Answer: B
Rationale: The correct answer is B: Presbycusis. Presbycusis refers to age-related hearing loss, commonly affecting higher frequencies. As people age, changes in the inner ear structures can lead to hearing loss. Otoplasty (A) is a surgical procedure to correct ear deformities, not related to aging. Otalgia (C) refers to ear pain, not specifically related to aging. Tinnitus (D) is the perception of ringing or buzzing in the ears, which can occur at any age and is not exclusive to age-related hearing loss.
The nurse is developing a teaching plan for a client diagnosed with diabetes insipidus. The nurse should include information about which hormone lacking in clients with diabetes insipidus?
- A. antidiuretic hormone (ADH).
- B. follicle-stimulating hormone (FSH).
- C. thyroid-stimulating hormone (TSH).
- D. luteinizing hormone (LH).
Correct Answer: A
Rationale: The correct answer is A: antidiuretic hormone (ADH). In diabetes insipidus, there is a deficiency of ADH, which regulates water balance by reducing urine output. Without ADH, excessive urination and thirst occur. FSH, TSH, and LH are not related to water balance regulation. FSH and LH are involved in reproductive functions, while TSH regulates thyroid hormone production. Therefore, the nurse should focus on educating the client about the importance of ADH in managing diabetes insipidus.
Considering Mr. Franco’s conditions, which of the following is most important to include in preparing Franco’s bedside equipment?
- A. Hand bell and extra bed linen
- B. Footboard and splint
- C. Sandbag and trochanter rolls
- D. Suction machine and gloves
Correct Answer: B
Rationale: Step-by-step rationale for choice B: Footboard and splint:
1. Footboard helps prevent foot drop by maintaining proper alignment and preventing pressure ulcers.
2. Splint helps stabilize and support Franco's limbs to prevent contractures and maintain proper positioning.
3. Both items are essential for Franco's safety, comfort, and prevention of complications.
4. Hand bell and extra bed linen (Choice A) are not crucial for Franco's immediate care needs.
5. Sandbag and trochanter rolls (Choice C) are not directly relevant to Franco's specific conditions.
6. Suction machine and gloves (Choice D) are important for airway management but not the priority for bedside equipment in this case.
For a client with sickle cell anemia, how does the nurse assess for jaundice?
- A. The nurse assesses mental status, verbal ability, and motor strength
- B. The nurse observes the joints for signs of swelling
- C. The nurse inspects the skin and sclera for jaundice
- D. The nurse collects a urine specimen
Correct Answer: C
Rationale: The correct answer is C because jaundice is a common manifestation of sickle cell anemia due to the breakdown of red blood cells. The nurse should inspect the skin and sclera for the characteristic yellow discoloration indicating jaundice. This assessment is specific to identifying jaundice, which is directly related to the disease process.
Choice A is incorrect as it relates to assessing neurological function, not jaundice. Choice B is incorrect as joint swelling is not a typical sign of jaundice in sickle cell anemia. Choice D is incorrect as a urine specimen is not used to assess jaundice; skin and sclera inspection are more appropriate.
Which of the following intravenous solutions is hypotonic?
- A. Normal saline
- B. Ringer’s lactate
- C. 0.45% saline
- D. 5% dextrose in normal saline A1 PASSERS TRAINING, RESEARCH, REVIEW & DEVELOPMENT COMPANY MEDICAL SURGICAL NURSING SET F
Correct Answer: C
Rationale: The correct answer is C: 0.45% saline. This solution is hypotonic because it has a lower osmolarity compared to the intracellular fluid. It contains fewer solutes than the cells, causing water to move into the cells by osmosis, potentially causing them to swell.
Normal saline (A) and Ringer's lactate (B) are isotonic solutions, meaning they have a similar osmolarity to the intracellular fluid and do not cause significant water shifts.
5% dextrose in normal saline (D) is a hypertonic solution, containing more solutes than the cells, leading to water movement out of the cells.