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.)

Choice A Reason: 0.8 mEq/L

The therapeutic range for lithium is typically between 0.6 and 1.2 mEq/L. A level of 0.8 mEq/L falls within this range and is considered normal. Therefore, it is unlikely that a client with this lithium level would present with symptoms such as mental confusion, frequent urination, and coarse tremors. These symptoms are more indicative of lithium toxicity, which occurs at higher levels.

Choice B Reason: 2.3 mEq/L

A lithium level of 2.3 mEq/L is significantly above the therapeutic range and indicates lithium toxicity. Symptoms of lithium toxicity include mental confusion, frequent urination, and coarse tremors, which match the client’s presentation. Severe toxicity can occur at levels above 2.0 mEq/L and can be life-threatening if not treated promptly. Therefore, this is the most likely lithium level for the client described.

Choice C Reason: 1.8 mEq/L

A lithium level of 1.8 mEq/L is above the therapeutic range but below the level typically associated with severe toxicity. While some symptoms of toxicity might appear at this level, they are generally less severe than those described in the scenario. The client’s symptoms suggest a more severe level of toxicity, making this choice less likely.

Choice D Reason: 1.2 mEq/L

A lithium level of 1.2 mEq/L is at the upper limit of the therapeutic range. While it is possible for some mild side effects to occur at this level, the severe symptoms described (mental confusion, frequent urination, and coarse tremors) are more indicative of a higher, toxic level of lithium. Therefore, this choice is also less likely.

d. Interview the client alone and assess for abuse

Explanation of Choices

Choice A Reason: Provide the Daughter and Client with Nutritional Counseling

While nutritional counseling is important, especially given the client’s malnourished state, it is not the immediate priority in this scenario. The client’s reluctance to speak and the daughter’s interruptions suggest that there may be underlying issues that need to be addressed first. Nutritional counseling can be provided later, once the immediate concerns have been resolved.

Choice B Reason: Request a Psychiatric Evaluation for the Client

Requesting a psychiatric evaluation may be necessary if there are signs of mental health issues, but it is not the first step in this situation. The priority is to ensure the client’s safety and well-being by addressing any immediate concerns, such as potential abuse. A psychiatric evaluation can be considered after the initial assessment and intervention.

Choice C Reason: Take the History from the Daughter Because of the Client’s Confusion

Taking the history from the daughter might seem practical due to the client’s confusion, but it is not the best approach in this case. The daughter’s constant interruptions and the client’s reluctance to speak raise concerns about the reliability of the information provided by the daughter. It is crucial to gather information directly from the client whenever possible to ensure an accurate assessment.

Choice D Reason: Interview the Client Alone and Assess for Abuse

Interviewing the client alone and assessing for abuse is the most appropriate intervention. The client’s reluctance to speak and the daughter’s interruptions could indicate that the client is being controlled or intimidated. Conducting a private interview allows the client to speak freely and provides an opportunity to identify any signs of abuse or neglect. Ensuring the client’s safety and addressing any immediate risks is the top priority.