A patient with type 1 diabetes reports mixing NPH and regular insulin to allow for one injection. The nurse knows:

NPH insulin should only be mixed with insulin glargine

These two forms of insulin are not compatible and cannot be mixed

Mixing these two forms of insulin may increase the overall potency of the products

This is an acceptable practice

Answer and Explanation

The Correct Answer is D

Choice A reason: NPH insulin is not mixed with insulin glargine, as glargine’s pH and formulation cause precipitation or altered pharmacokinetics when combined. NPH can be mixed with regular insulin, as they are compatible, making this choice incorrect for the patient’s reported practice.

Choice B reason: NPH and regular insulin are compatible and routinely mixed in one syringe to provide both intermediate and short-acting coverage. They don’t react chemically or lose efficacy when combined properly, making this choice incorrect, as mixing is a standard practice in diabetes management.

Choice C reason: Mixing NPH and regular insulin does not increase potency; it combines their pharmacokinetics for basal and prandial glucose control. The mixture delivers the additive effects of each insulin’s profile without enhancing overall potency, making this choice inaccurate for their combined action.

Choice D reason: Mixing NPH (intermediate-acting) and regular insulin (short-acting) is an accepted practice to manage type 1 diabetes with one injection, covering basal and prandial needs. Proper technique (drawing regular insulin first) ensures stability, making this the correct choice for the patient’s reported insulin administration.

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Correct Answer is D

Explanation

Choice A reason: For 10 mg at 5 mg/mL: 10 ÷ 5 = 2 mL. Choice A (0.5 mL) delivers 2.5 mg (0.5 × 5), underdosing Compazine, which may fail to control nausea or psychosis, making this choice incorrect for the prescribed dose.

Choice B reason: The correct volume is 10 mg ÷ 5 mg/mL = 2 mL. Choice B (4 mL) delivers 20 mg (4 × 5), overdosing Compazine, risking extrapyramidal symptoms or sedation, making this choice incorrect and potentially harmful for safe administration.

Choice C reason: For 10 mg, the volume is 2 mL (10 ÷ 5). Choice C (1 mL) delivers 5 mg (1 × 5), underdosing Compazine, which could be ineffective for nausea or psychiatric symptoms, making this choice inadequate for the ordered dose.

Choice D reason: Calculating 10 mg ÷ 5 mg/mL = 2 mL accurately delivers the ordered 10 mg of Compazine (prochlorperazine) for nausea or psychosis. This ensures therapeutic efficacy without overdose, aligning with safe intramuscular administration, making this the correct choice.

A. Fully Compensated Metabolic Acidosis B. Fully Compensated Metabolic Alkalosis C. Fully Compensated Respiratory Alkalosis D. Fully Compensated Respiratory Acidosis

Correct Answer is B

Explanation

Choice A reason: Metabolic acidosis involves low pH and HCO3-; here, pH is normal, and HCO3- is high. Elevated PaCO2 compensates for high HCO3-, so this is incorrect for the ABG values.

Choice B reason: Normal pH (7.39), high HCO3- (29), and high PaCO2 (47) indicate metabolic alkalosis fully compensated by respiratory retention of CO2. This matches the values, making it correct.

Choice C reason: Respiratory alkalosis has low PaCO2 and normal or low HCO3-. Here, PaCO2 and HCO3- are high, ruling this out, so it’s incorrect for the given ABG profile.

Choice D reason: Respiratory acidosis has high PaCO2 and low pH. Normal pH and high HCO3- suggest metabolic alkalosis, not respiratory acidosis, making this incorrect for the values.

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A patient with type 1 diabetes reports mixing NPH and regular insulin to allow for one injection. The nurse knows:

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Naxlex Comprehensive Predictor Exams

The healthcare provider orders Compazine 10 mg IM now. The concentration available is Compazine 5 mg/mL. How many mL will the patient receive?

Correct Answer is D

Explanation

Name the imbalance using the following Arterial Blood Gas (ABG) values: pH 7.39, PaCO2 47, HCO3- 29

Correct Answer is B

Explanation

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