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 B
Explanation
Choice A rationale:
Calcitonin (Fortical) is a hormone that lowers blood calcium levels. It is not indicated for the treatment of hypocalcemia caused by parathyroid hormone deficiency. In fact, it could worsen the condition by further reducing calcium levels.
Calcitonin is primarily used to treat hypercalcemia (high calcium levels) and osteoporosis.
It works by inhibiting osteoclast activity, which reduces bone resorption and calcium release into the bloodstream.
Choice B rationale:
Calcium is the essential mineral for treating hypocalcemia. It directly replenishes calcium levels in the blood.
Calcium can be administered orally (PO) or intravenously (IVPB), depending on the severity of the hypocalcemia and the patient's condition.
Oral calcium is often preferred for mild to moderate hypocalcemia, while IV calcium is typically used for severe hypocalcemia or when rapid correction is necessary.
Calcium supplements are available in various forms, including calcium carbonate, calcium citrate, and calcium gluconate. The dosage of calcium will be individualized based on the patient's serum calcium levels and clinical response.
Choice C rationale:
Vitamin B12 is not directly involved in calcium regulation. It is essential for red blood cell production and nerve function. While vitamin B12 deficiency can sometimes be associated with hypocalcemia, it is not a primary treatment for this condition. Choice D rationale:
Vitamin D3 (Calcitriol) is a hormone that aids in calcium absorption from the intestines. It is often used in conjunction with calcium supplements to treat hypocalcemia.
However, vitamin D3 alone is not sufficient to treat hypocalcemia caused by parathyroid hormone deficiency. Parathyroid hormone is essential for activating vitamin D3 in the kidneys, so its deficiency limits the effectiveness of vitamin D3.
Correct Answer is C
Explanation
Choice A rationale:
Respiratory distress is not a direct side effect of metformin. While metformin can cause a rare condition called lactic acidosis, which can lead to rapid breathing, respiratory distress is not a primary concern with metformin use.
Respiratory distress typically involves difficulty breathing due to other causes such as asthma, pneumonia, heart failure, or chronic obstructive pulmonary disease (COPD).
Choice B rationale:
Seizures are not a known side effect of metformin.
Seizures are typically associated with neurological conditions, such as epilepsy, or metabolic disturbances such as hypoglycemia or electrolyte imbalances.
Metformin does not directly affect the central nervous system in a way that would increase the risk of seizures.
Choice C rationale:
Lactic acidosis:
This is a rare but serious condition that can occur with metformin use.
It happens when lactic acid builds up in the bloodstream, causing the blood to become too acidic. Symptoms of lactic acidosis include:
Rapid breathing Nausea and vomiting Abdominal pain Muscle weakness Unusual sleepiness Feeling cold
Risk factors for lactic acidosis in patients taking metformin include:
Kidney disease Congestive heart failure Liver disease Dehydration
Excessive alcohol intake Recent surgery or heart attack
It's important to note that lactic acidosis is rare, occurring in about 3 to 10 cases per 100,000 people taking metformin per year.
Renal failure:
Metformin is primarily eliminated by the kidneys.
If kidney function is impaired, metformin can build up in the body, increasing the risk of lactic acidosis. Additionally, metformin can potentially cause kidney damage in rare cases, further worsening kidney function. It's crucial to monitor kidney function regularly in patients taking metformin.
Choice D rationale:
Hyperglycemia (high blood sugar) is not a side effect of metformin.
In fact, metformin is a medication used to lower blood sugar levels in people with type 2 diabetes. It works by:
Decreasing the amount of glucose produced by the liver Improving the body's sensitivity to insulin
Slowing the absorption of glucose from the intestines
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.