aclient has chronic respiratory acidosis caused byend stage chronic obstructive pulmonary disease copd oxygen is delivered at 1 lmin per nasal cannula
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NCLEX-PN

NCLEX-PN Quizlet 2023

1. A client has chronic respiratory acidosis caused by end-stage chronic obstructive pulmonary disease (COPD). Oxygen is delivered at 1 L/min via nasal cannula. The nurse teaches the family that the reason for this is to avoid respiratory depression, based on which of the following explanations?

Correct answer: A

Rationale: In clients with COPD and chronic respiratory acidosis, they are compensating for low oxygen and high carbon dioxide levels. Hypoxia acts as the main stimulus to breathe in individuals with chronic hypercapnia. When oxygen is administered, it can decrease the respiratory drive by eliminating the hypoxic drive and reducing the stimulus to breathe. Therefore, delivering oxygen at 1 L/min via nasal cannula helps prevent respiratory depression by maintaining the hypoxic drive to breathe. The other options are incorrect: COPD clients do not depend on a low carbon dioxide level as they are chronically hypercapnic, they do not retain hydrogen ions with high oxygen doses, and they do not thrive on a high oxygen level.

2. A client comes to the clinic for assessment of his physical status and guidelines for starting a weight-reduction diet. The client's weight is 216 pounds and his height is 66 inches. The nurse identifies the BMI (body mass index) as:

Correct answer: C

Rationale: Obesity is defined by a BMI of 30 or more with no co-morbid conditions. It is calculated by utilizing a chart or nomogram that plots height and weight. This client's BMI is 35, indicating obesity. Choices A, B, and D are incorrect because the client's BMI is above 30, which falls under the obesity category. Therefore, a weight-reduction diet and increased physical activity are necessary to address the client's weight status and promote overall health.

3. A nurse is weighing a breastfed 6-month-old infant who has been brought to the pediatrician's office for a scheduled visit. The infant's weight at birth was 6 lb 8 oz. The nurse notes that the infant now weighs 13 lb. What action should the nurse take?

Correct answer: B

Rationale: The correct answer is to inform the mother that the infant's weight gain is normal. Infants typically double their birth weight by 6 months, which is precisely the case here, with the infant's weight increasing from 6 lb 8 oz to 13 lb. This weight gain indicates healthy growth and development. Therefore, there is no need to decrease feedings. The infant should continue with breast milk as it is providing adequate nutrition. Additionally, introducing semisolid foods is usually recommended between 4 and 6 months of age, so there is no indication to delay based on the infant's weight gain.

4. For a client with suspected appendicitis, in which quadrant should the nurse expect to find abdominal tenderness?

Correct answer: C

Rationale: The correct answer is C: lower right. Abdominal tenderness in the lower-right quadrant is a classic sign of appendicitis. The appendix is located in the lower right abdomen, so inflammation of the appendix typically causes tenderness in this specific area. Choices A, B, and D are incorrect because tenderness in the upper right, upper left, and lower left quadrants, respectively, is not typical in appendicitis cases. Therefore, the nurse should focus on assessing the lower right quadrant for tenderness when suspecting appendicitis.

5. What is the drug of choice for herpes simplex virus 1, herpes simplex virus 2, and varicella-zoster virus?

Correct answer: B

Rationale: Acyclovir (Zovirax) is the drug of choice for herpes simplex virus 1 (HSV-1), herpes simplex virus 2 (HSV-2), and varicella-zoster virus (VZV) infections. It works by inhibiting viral DNA replication. Acyclovir is excreted unchanged in the urine, so caution is needed in renal impairment. Choice A, HIV, is incorrect as acyclovir is not the drug of choice for HIV. Choice C, CMV, is incorrect as acyclovir is not the preferred treatment for cytomegalovirus (CMV) infections. Choice D, Influenza A viruses, is incorrect as acyclovir is not used to treat influenza viruses.

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