A nurse is preparing regular and NPH insulin in the same syringe for a client who has diabetes mellitus.
Which of the following actions should the nurse take?
Administer the mixture within 5 minutes of preparing it.
Inject air into the regular insulin vial before injecting air into the NPH vial.
Withdraw the NPH insulin before the regular insulin.
Shake both insulin vials for 2 minutes before withdrawing the doses.
The Correct Answer is A
Choice A rationale
Regular insulin is a rapid-acting insulin, and NPH is an intermediate-acting insulin. When mixed in the same syringe, the regular insulin molecules can bind to the protamine in the NPH suspension. This can alter the absorption profile of the regular insulin, delaying its onset of action. Administering the mixture within 5 minutes prevents this molecular interaction and ensures the regular insulin retains its rapid-acting properties.
Choice B rationale
It is crucial to inject air into the NPH insulin vial first, followed by the regular insulin vial, and then withdraw the regular insulin dose before the NPH. This specific order prevents the NPH from contaminating the regular insulin vial with protamine, which would alter the potency and action profile of the regular insulin for future use. The regular insulin is then drawn up first.
Choice C rationale
The correct procedure is to withdraw the regular insulin before the NPH insulin. The sequence is to inject air into both vials, then draw up the clear, rapid-acting regular insulin first, followed by the cloudy, intermediate-acting NPH insulin. This sequence is essential to prevent contamination of the regular insulin vial with the NPH insulin, which could affect its rapid-acting properties.
Choice D rationale
Shaking insulin vials is generally discouraged as it can lead to the formation of air bubbles, which can result in an inaccurate dose. Instead of shaking, the NPH insulin vial should be gently rolled between the palms of the hands. This action warms the insulin and resuspends the particles uniformly without causing bubbles, ensuring an accurate and consistent dose is administered. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
A nonstress test (NST) does not require the client to fast. The client can eat and drink normally, and sometimes a sugary beverage is even encouraged to stimulate fetal movement, as the test aims to record fetal heart rate accelerations in response to these movements.
Choice B rationale
The nonstress test is a screening tool used to assess fetal well-being by measuring the fetal heart rate's response to fetal movement. It does not provide information about genetic problems, which are typically identified through genetic testing or prenatal diagnostic procedures such as amniocentesis.
Choice C rationale
A key component of the nonstress test involves the mother noting fetal movements. The client is given a marker, often a button, to press each time she feels the baby move. This action correlates the mother's perception of movement with the fetal heart rate accelerations recorded on the monitor.
Choice D rationale
Oxytocin is not administered during a nonstress test. The purpose of this test is to assess the baby's baseline heart rate and accelerations without external stimulation. Oxytocin is used in a contraction stress test, which is a different procedure to evaluate how the baby handles uterine contractions. *.
Correct Answer is D
Explanation
Choice A rationale
A guardian's statement that a child fell off a swing is a common and plausible explanation for a fractured arm. This type of injury is consistent with the normal activities of a preschooler, and it does not inherently suggest abuse. The nurse should continue with a thorough physical assessment and gather additional history, but this statement alone is not a red flag.
Choice B rationale
Crying loudly when a fractured arm is moved is a normal, expected reaction to pain. The child is experiencing acute pain from the injury, and any movement of the affected limb would cause a significant increase in discomfort. This is not a warning sign of maltreatment but rather a natural physiological response to a painful stimulus.
Choice C rationale
A guardian wanting to accompany a child to the radiology department is a typical and often protective behavior. Many parents wish to provide emotional support to their child during stressful medical procedures. This action demonstrates parental involvement and concern for the child's well-being and is not indicative of abuse or neglect.
Choice D rationale
A delay in seeking medical care for a significant injury, such as a fractured arm, is a major red flag for child maltreatment. This delay suggests that the guardian may be attempting to hide the cause of the injury or is neglectful of the child's health needs. Timely medical attention for a painful injury is the standard of care. .
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