During oxygenation, partial pressure of carbon dioxide in arterial blood should be maintained between:

Correct Answer: D

Rationale: Rationale for Correct Answer (D): The normal partial pressure of carbon dioxide (PaCO2) in arterial blood is 35-45 mmHg. This range is essential for maintaining acid-base balance. Deviations from this range can lead to respiratory acidosis or alkalosis. Therefore, maintaining PaCO2 within 35-45 mmHg is crucial for proper oxygenation and gas exchange. Summary of Incorrect Choices: A: 95-100% - This range is not relevant for partial pressure of carbon dioxide in arterial blood. It refers to oxygen saturation. B: 80-100 mmHg - This range is too broad and includes values outside the normal PaCO2 range. C: 22-26 mEq/l - This range refers to bicarbonate levels, not PaCO2.

Correct Answer: D

Rationale: The correct answer is D: Before age 20. Testicular examinations are important for early detection of testicular cancer, which is most common in young and middle-aged men. Teaching George before age 20 ensures he understands the importance of self-examinations and can detect any abnormalities early. Choice A is incorrect because sexual activity is not directly related to testicular health. Choice B is incorrect as waiting until after age 10 may miss the crucial window for early detection. Choice C is incorrect as waiting until after age 40 may miss the opportunity to detect testicular cancer early.

Correct Answer: B

Rationale: The correct answer is B: Bronchodilators. In acute asthma, bronchodilators are the first-line treatment to rapidly dilate airways and improve forced expiratory volume. Beta-adrenergic blockers (A) can worsen asthma symptoms. Inhaled steroids (C) are used for long-term control, not immediate relief. Oral steroids (D) are often used in acute exacerbations but are not the immediate first choice to improve forced expiratory volume.

Correct Answer: A

Rationale: The correct answer is A because cleaning the urinary meatus and adjacent skin periodically helps prevent infection and irritation. It maintains hygiene and reduces the risk of complications. Choice B is incorrect because fluid intake should be appropriate, not excessive. Choice C is incorrect because flushing the catheter without proper indication can introduce infection. Choice D is incorrect as perineal flushing is not recommended for clients with a retention catheter.

Correct Answer: B

Rationale: The correct answer is B: Anticipatory Grieving. This nursing diagnosis is appropriate because the client is expressing sadness about a potential loss (her breast). Anticipatory Grieving involves experiencing the feelings and behaviors associated with the normal process of grieving before an actual loss occurs. In this case, the client is already grieving the potential loss of her breast, which aligns with the definition of anticipatory grieving. Incorrect options: A: Ineffective Individual Coping - This diagnosis is more about the client's ability to cope with stressors or life events, rather than specifically related to grief. C: Knowledge Deficit - This diagnosis is about a lack of understanding or information, which is not the primary issue in this scenario. D: Fear - While fear may be a component of the client's emotional response, it does not fully capture the anticipatory grieving process that the client is going through.