a nurse is preparing to draw a blood specimen from an adult clients central line all of the following actions for this procedure are correct except
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NCLEX-RN

Health Promotion and Maintenance NCLEX RN Questions

1. A healthcare professional is preparing to draw a blood specimen from an adult client's central line. All of the following actions for this procedure are correct EXCEPT:

Correct answer: B

Rationale: When drawing a blood specimen from a central line, the healthcare professional should disconnect any infusions that are currently running and that could contaminate the specimen. It is important to use a minimum size of a 10 cc syringe when using a central line to avoid placing too much pressure on the catheter. Cleaning the cap with alcohol and attaching a 5 cc syringe is not appropriate as a larger syringe size should be used for this procedure. Drawing 5 cc of a blood sample to discard and flushing with saline after the sample are correct steps in the process of drawing a blood specimen from a central line.

2. A client with asthma is being admitted for breathing difficulties. His arterial blood gas results are pH 7.26, PCO2 49, PaO2 90, and HCO3- 21. Which of the following best describes this condition?

Correct answer: A

Rationale: In this case, the client's arterial blood gas results show a pH of 7.26 and a PCO2 of 49, both of which are abnormal. A pH below the normal range of 7.35-7.45 indicates acidosis. The elevated PCO2 of 49 mmHg suggests respiratory acidosis as the primary issue. The normal range for PCO2 is 35-45 mmHg, so a value of 49 indicates the retention of excess CO2, leading to acidosis. The low HCO3- level of 21 also supports the presence of metabolic acidosis; however, the primary abnormality is respiratory, making this an uncompensated respiratory acidosis. Therefore, the correct answer is 'Uncompensated respiratory acidosis.' Choice B, 'Compensated respiratory alkalosis,' is incorrect because the client's pH is acidic, not alkalotic. Additionally, there is no compensation occurring for the primary respiratory acidosis indicated by the elevated PCO2. Choice C, 'Uncompensated metabolic acidosis,' is incorrect because while the HCO3- level is low, the primary issue indicated by the elevated PCO2 is respiratory acidosis. Choice D, 'Compensated metabolic alkalosis,' is incorrect since the arterial blood gas results do not support a metabolic alkalosis. The low HCO3- level would typically be seen in metabolic acidosis, but in this case, the primary issue is respiratory acidosis.

3. As a nursing supervisor in a long-term care facility, you prioritize strict infection control prevention measures due to the understanding that the normal aging process weakens the body's defenses. Which theory of aging supports the necessity of strict infection control prevention measures?

Correct answer: B

Rationale: The theory of aging that aligns with the need for strict infection control prevention measures is the Immunological Theory of Aging. This theory posits that aging leads to a decline in the body's immune defenses and a reduced ability of antibodies to protect against infections. The other theories do not directly address the impact of aging on the immune system. The Programmed Longevity Theory focuses on genetic changes affecting aging, the Endocrine Theory emphasizes hormonal changes, and the Rate of Living Theory relates longevity to the rate of oxygen metabolism.

4. Which of the following is an example of libel?

Correct answer: B

Rationale: Libel involves making defamatory statements against another person in written form. These statements can harm the person's reputation or feelings. In this scenario, the correct answer is when a client reads disparaging remarks that a nurse has written about him in his chart. This constitutes libel because the negative remarks are written down and can potentially damage the client's reputation. Choices A, C, and D do not involve libel. Choice A describes a verbal statement, not written, so it does not constitute libel. Choice C involves a failure to notify a physician, which is a different issue unrelated to libel. Choice D pertains to administering medication without an order, which is a matter of improper practice rather than libel.

5. Which of the following reasons would be legal when considering a patient's medical record?

Correct answer: B

Rationale: The correct answer is not allowing a patient to view her own chart because the physician feels this information would be detrimental to her wellbeing. Physicians have a duty to withhold certain health information from patients if disclosing it could potentially harm the patient. In situations where revealing certain information may have a significantly negative impact on the patient's mental or physical health, healthcare providers have the legal right to withhold that information. Allowing a patient's brother to view her chart for non-medical reasons like sending a card is not a valid legal reason for disclosing patient information. Similarly, refusing access based on financial reasons is not a legal ground for restricting access to a patient's medical record as patient care should not be influenced by financial matters.

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