A client in DKA is ordered regular insulin at 7 units per hour for the current blood glucose level. The institution protocol is to add 100 units of regular insulin to a 150 ml bag of normal saline. What is the correct rate for the nurse to set the IV pump for this dose?

(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["10.5"]

Step 1: Determine the concentration of insulin in the IV bag. 100 units of insulin are added to 150 mL of normal saline.

100 units ÷ 150 mL = (100 ÷ 150) = 0.6667 units per mL Result: 0.6667 units per mL

Step 2: Calculate the rate in mL per hour needed to deliver 7 units per hour. 7 units per hour ÷ 0.6667 units per mL = (7 ÷ 0.6667) = 10.5 mL per hour Result: 10.5 mL per hour

The correct rate for the nurse to set the IV pump is 10.5 mL per hour.

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Correct Answer is D

Explanation

d. Emesis from purging corrodes the tooth enamel

Explanation of Choices

Choice A Reason: Food is Rapidly Ingested Without Proper Chewing

While individuals with bulimia nervosa may engage in rapid eating during binge episodes, this behavior alone does not directly cause dental deterioration. Rapid ingestion of food can lead to other gastrointestinal issues, but it is not the primary cause of dental problems seen in bulimia nervosa. The main dental issues arise from the purging behavior that follows binge eating.

Choice B Reason: Poor Dental and Oral Hygiene Leads to Dental Caries

Poor dental and oral hygiene can indeed lead to dental caries (cavities), but this is not the primary issue in bulimia nervosa. The dental deterioration observed in bulimia nervosa is more specifically related to the effects of repeated vomiting, which introduces stomach acid into the mouth. While maintaining good oral hygiene is important, it does not fully address the unique dental challenges posed by bulimia.

Choice C Reason: Purging Causes the Depletion of Dietary Calcium

Purging can lead to various nutritional deficiencies, including calcium, but the depletion of dietary calcium is not the main cause of dental deterioration in bulimia nervosa. The primary issue is the direct effect of stomach acid on the teeth. Calcium depletion can contribute to overall bone health issues, but it is not the specific cause of the dental erosion seen in bulimia.

Choice D Reason: Emesis from Purging Corrodes the Tooth Enamel

Emesis (vomiting) from purging is the primary cause of dental deterioration in bulimia nervosa. When individuals with bulimia vomit, stomach acid comes into contact with the teeth, leading to enamel erosion. This acid is highly corrosive and can wear away the protective enamel layer, resulting in increased tooth sensitivity, cavities, and other dental issues. This repeated exposure to stomach acid is the most significant factor in the dental deterioration observed in bulimia nervosa.

Correct Answer is ["2"]

Explanation

Step 1: Identify the dosage required and the concentration available.

Required dosage: 40 mg
Available concentration: 20 mg/mL

Step 2: Calculate the volume to be administered.

Volume to be administered = Required dosage ÷ Available concentration
Volume to be administered = 40 mg ÷ 20 mg/mL

Step 3: Perform the division.

Volume to be administered = 40 ÷ 20
Volume to be administered = 2 mL

Step 4: Round the answer to the nearest whole number (if necessary).

Volume to be administered = 2 mL (no rounding needed)

The nurse should administer 2 mL.

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Naxlex Comprehensive Predictor Exams

The nurse observes dental deterioration when assessing a client diagnosed with Bulimia Nervosa. Which best explains this assessment finding?

Correct Answer is D

Explanation

A nurse is preparing to administer fluoxetine 40 mg PO daily. The amount available is fluoxetine 20 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["2"]

Explanation

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