Nursing Elites

1. Why is a pulse oximeter attached to Mr. Dizon's finger?

• A. To determine if the patient's hemoglobin level is low and if he requires a blood transfusion
• B. To check the level of the patient's tissue perfusion
• C. To measure the effectiveness of the patient's anti-hypertensive medications
• D. To detect oxygen saturation of arterial blood before symptoms of hypoxemia develop

Correct answer: D

Rationale: A pulse oximeter is used to detect the oxygen saturation levels in arterial blood before the onset of hypoxemia symptoms. This device provides essential information about the effectiveness of oxygen transportation to the body's tissues. Choice A is incorrect because a pulse oximeter does not directly measure hemoglobin levels nor determine the need for a blood transfusion. Choice B is incorrect because a pulse oximeter is designed specifically to assess oxygen saturation, not tissue perfusion. Choice C is incorrect because a pulse oximeter is not used to measure the efficacy of anti-hypertensive medications, but rather to monitor oxygen levels in the blood.

2. During early tooth development, vitamin A deficiency leads to enamel hypoplasia and defective dentin formation. Because of its effect on soft tissues and bone, vitamin A contributes to normal spacing of teeth.

• A. Both statements are true.
• B. Both statements are false.
• C. The first statement is true; the second is false.
• D. The first statement is false; the second is true.

Correct answer: A

Rationale: Both statements are true. The effect of vitamin A on the growth of soft tissues and bones naturally extends to the teeth and surrounding structures. Enamel hypoplasia, involving defective enamel matrix and incomplete calcification of enamel and dentin, can be due to vitamin A deficiency. The effect of this vitamin upon surrounding bone directly affects spacing patterns of the teeth within the bone and dentition. Choice A is correct because both statements accurately describe the influence of vitamin A on tooth development. Choices B, C, and D are incorrect as they do not reflect the accuracy of the statements provided.

3. Select all that apply. You are interested in learning about the effect of eating diet soft drinks on your health. Your internet search leads you to a website with the ending .com, which tells you that diet soft drinks contain sugar alcohols that can cause harm. Which of the following actions are logical?

• A. notice if there are any ads on the page that suggest conflicts of interest
• B. read about consuming diet soft drinks in the dietary guidelines for Americans
• C. visit a more credible website and compare information
• D. all of the above

Correct answer: D

Rationale: Logical steps include evaluating the credibility of the website, reading official guidelines, comparing information from credible sources, and verifying the author's qualifications.

4. A nurse is reinforcing teaching about food choices with the mother of an 8-month-old infant. Which of the following statements by the mother indicates a need for further teaching?

• A. I will give my child strained carrots and mashed egg yolks.
• B. I will give my child rice cereal and crackers.
• C. I will give my child pureed liver and strained pears.
• D. I will give my child applesauce and green peas.

Correct answer: B

Rationale: Choice B, 'I will give my child rice cereal and crackers,' indicates a need for further teaching. Infants should not be given crackers at 8 months of age due to the risk of choking. Rice cereal is appropriate for infants, but it should be introduced carefully to avoid digestive issues. Choices A, C, and D are appropriate food choices for an 8-month-old infant, providing a variety of nutrients and textures suitable for their age and developmental stage.

5. Which ethnic group has the lowest rates of type 2 diabetes?

• A. Caucasians
• B. Asian Indians
• C. Pacific Islanders
• D. African Americans

Correct answer: A

Rationale: Statistical data suggest that Caucasians generally have lower rates of type 2 diabetes compared to the other ethnic groups listed in the choices. This is not to say that Caucasians are immune to the disease, but rather that they have fewer reported instances. On the other hand, African Americans and Pacific Islanders are often identified as groups with a significantly higher risk and prevalence of type 2 diabetes. Asian Indians also exhibit higher rates compared to Caucasians. It is important to note that these are general trends observed in statistical data, and individual health outcomes can vary based on various factors such as lifestyle, diet, and genetics, among others. Therefore, the correct answer is A: Caucasians because they generally have the lowest rates of type 2 diabetes when compared to the other ethnic groups mentioned.

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