which of the following arterial blood gas values indicates a patient may be experiencing a condition of metabolic acidosis
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NCLEX-PN

NCLEX PN Exam Cram

1. Which of the following arterial blood gas values indicates a patient may be experiencing a condition of metabolic acidosis?

Correct answer: B

Rationale: The correct answer is B: Bicarbonate 15 mEq/L. In metabolic acidosis, the bicarbonate levels are lower than normal. A bicarbonate value of 15 mEq/L indicates a deficit in the buffer system, contributing to the acidosis. Choices A, C, and D are incorrect. Choice A, PaO2 90 mm Hg, reflects oxygen partial pressure and is not directly related to metabolic acidosis. Choice C, CO2 47 mm Hg, represents carbon dioxide levels and is more indicative of respiratory status. Choice D, pH 7.34, falls within the normal range (7.35-7.45) and does not confirm metabolic acidosis.

2. One drug can alter the absorption of another drug. One drug increases intestinal motility. Which effect does this have on the second drug?

Correct answer: D

Rationale: When one drug increases intestinal motility, it accelerates the movement of the second drug through the system. Since most oral medications are absorbed in the intestine, the faster transit time decreases the absorption of the second drug. Therefore, less of the second drug is absorbed. Choice A is incorrect because the increased gut motility does affect the absorption of the second drug. Choice C is incorrect as the effect of increased intestinal motility on drug absorption can be predicted based on pharmacokinetic principles. Choice B is incorrect as increased gut motility would not increase but decrease the absorption of the second drug.

3. A 27-year-old woman has delivered twins in the OB unit. The patient develops a condition of 5-centimeter diastasis recti abdominis. Which of the following statements is the most accurate when instructing the patient?

Correct answer: C

Rationale: After experiencing diastasis recti abdominis, it is crucial for the patient to protect and guard the abdominal region to facilitate healing. Choice A is correct since avoiding sit-ups is important to prevent worsening the condition by increasing intra-abdominal pressure. Choice B is accurate as not all cases of diastasis recti abdominis require surgery; conservative management is often effective. Choice D is also correct as antibiotics are not indicated for diastasis recti abdominis since it is a separation of the abdominal muscles and not an infectious condition.

4. Why must the nurse be careful not to cut through or disrupt any tears, holes, bloodstains, or dirt present on the clothing of a client who has experienced trauma?

Correct answer: C

Rationale: In cases of trauma, the clothing of a client can hold crucial evidence that may have legal implications. It is essential for the nurse to avoid cutting through or disrupting any tears, holes, bloodstains, or dirt present on the clothing to preserve this potential evidence. The correct answer highlights the legal importance of preserving the clothing for potential legal implications. Choice B is related but does not emphasize the legal aspect explicitly. Choice C is vague in mentioning further investigation without specifying the legal significance. Choice D focuses more on forensic analysis rather than the legal implications of preserving the clothing.

5. Which nursing diagnosis has the highest priority for a client with insomnia?

Correct answer: A

Rationale: The correct answer is 'A: Ineffective breathing pattern.' When a client presents with insomnia, assessing for underlying causes is crucial. Sleep apnea, an airway issue, may be a contributing factor to the client's insomnia, making 'Ineffective breathing pattern' the priority. 'Disturbed sensory perception' focuses on alterations in touch, taste, or vision, which are not directly related to insomnia. 'Ineffective coping' addresses a client's inability to manage stress, which, although important, is not the priority in this case. 'Sleep deprivation' is a consequence of insomnia rather than a primary nursing diagnosis.

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