The client asks the nurse about storing insulin. Which response by the nurse is correct?
Vials of insulin should be refrigerated.
Insulin will last longer if kept in the freezer.
Opened vials of insulin must be discarded.
Insulin pens never have to be refrigerated.
The Correct Answer is A
Choice A rationale:
Insulin is a protein-based hormone that is sensitive to heat and light. Exposure to high temperatures or direct sunlight can cause insulin to break down and become less effective.
Refrigeration helps to maintain the stability and potency of insulin. It is generally recommended to store unopened insulin vials in the refrigerator at a temperature between 36°F and 46°F (2°C and 8°C).
This temperature range helps to slow down the degradation process and ensure that the insulin remains effective until its expiration date.
Choice B rationale:
Insulin should never be frozen. Freezing can cause the insulin to crystallize and become unusable. Once insulin has been frozen, it cannot be thawed and used again.
Choice C rationale:
Opened vials of insulin do not need to be discarded immediately. They can be stored in the refrigerator for up to 28 days, depending on the type of insulin.
However, it is important to note the date that the vial was opened and to discard it after the recommended storage period.
Choice D rationale:
Insulin pens should be stored according to the manufacturer’s instructions. Some insulin pens can be stored at room temperature for a certain period of time, while others must be refrigerated.
It is important to read the instructions that come with the insulin pen to ensure that it is stored properly.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Erythromycin ointment does not have moisturizing properties. Its primary function is to act as an antibiotic to prevent bacterial infections.
While it may have a slightly lubricating effect due to its ointment base, this is not its intended purpose.
If moisture is the primary goal, artificial tears or other ophthalmic lubricants would be more appropriate choices.
Choice B rationale:
Chemical conjunctivitis is typically caused by irritants such as chlorine, smoke, or chemicals, not bacteria. Erythromycin is not effective in preventing or treating chemical conjunctivitis.
Treatment for chemical conjunctivitis usually involves flushing the eyes with saline or water and applying cool compresses, as well as potentially using topical antihistamines or corticosteroids to reduce inflammation.
Choice D rationale:
Erythromycin ointment is not typically used to treat active eye infections in newborns.
While it can be used for this purpose in certain cases, it is more commonly used as a prophylactic measure to prevent infections from developing in the first place.
If a newborn has a suspected eye infection, a healthcare provider would likely collect a sample of discharge for testing and culture to determine the specific causative organism and select the most appropriate antibiotic treatment.
Choice C rationale:
The primary purpose of applying erythromycin ointment to a newborn's eyes is to prevent bacterial eye infections, specifically ophthalmia neonatorum.
Ophthalmia neonatorum is a serious condition that can lead to vision loss if not treated promptly.
It is most commonly caused by the bacteria Neisseria gonorrhoeae and Chlamydia trachomatis, which can be transmitted to the newborn during childbirth if the mother is infected.
Erythromycin ointment is effective in preventing these infections by killing or inhibiting the growth of these bacteria. It is typically applied to the newborn's eyes within 1 hour of birth as a standard practice in many countries.
Correct Answer is B
Explanation
Choice A rationale:
Albuterol (Proventil) is a bronchodilator that is used to treat acute asthma attacks and chronic obstructive pulmonary disease (COPD). It works by relaxing the smooth muscles in the airways, which allows more air to flow into the lungs. While albuterol can be helpful in relieving shortness of breath, it is not the first-line treatment for a patient with chest pain and low oxygen saturation. This is because albuterol does not address the underlying cause of the chest pain, which is likely a lack of oxygen to the heart muscle.
Choice C rationale:
Nitroglycerin is a vasodilator that is used to treat angina (chest pain) and heart failure. It works by relaxing the blood vessels, which allows more blood to flow to the heart. Nitroglycerin can be helpful in relieving chest pain, but it is not the first-line treatment for a patient with low oxygen saturation. This is because nitroglycerin can actually worsen hypoxemia (low oxygen levels in the blood) by dilating blood vessels in the lungs.
Choice D rationale:
Aspirin is a blood thinner that is used to prevent and treat blood clots. It is often given to patients with chest pain who are suspected of having a heart attack. However, aspirin is not the first-line treatment for a patient with low oxygen saturation. This is because aspirin does not address the underlying cause of the low oxygen saturation, which is likely a problem with the lungs or heart.
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