A nurse is teaching a client who is newly diagnosed with type 1 diabetes mellitus about insulin safety. Which of the following statements by the nurse is appropriate?
Insulin is stable at room temperature for one month.
Insulins can be mixed in the same syringe.
Storing insulin in the freezer will prolong its stability.
Clients with type 1 diabetes mellitus should keep backup medication and supplies in their car.
The Correct Answer is A
The correct answer is a. Insulin is stable at room temperature for one month.
Choice A Reason:
Insulin is stable at room temperature (between 59°F and 86°F) for up to one month. This is important for patients to know, especially if they do not have immediate access to refrigeration. However, it is crucial to avoid exposing insulin to extreme temperatures, such as direct sunlight or freezing conditions, as these can degrade the medication’s effectiveness.
Choice B Reason:
While some types of insulin can be mixed in the same syringe, this practice is not universally applicable to all insulin types. For example, rapid-acting and intermediate-acting insulins can sometimes be mixed, but long-acting insulins should not be mixed with other insulins. Therefore, this statement is not entirely accurate and should be clarified based on the specific types of insulin being used.
Choice C Reason:
Storing insulin in the freezer is not recommended as freezing can damage the insulin, rendering it ineffective. Insulin should be stored in a refrigerator at temperatures between 36°F and 46°F. If insulin is accidentally frozen, it should not be used.
Choice D Reason:
While it is advisable for clients with type 1 diabetes to have backup medication and supplies, storing them in a car is not recommended due to the potential for extreme temperature fluctuations. Insulin and other diabetes supplies should be kept in a stable, controlled environment to ensure their efficacy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Coronary arteries do not become more elastic with age. Instead, they tend to become less elastic due to the buildup of plaque, a condition known as atherosclerosis. This buildup narrows the arteries and restricts blood flow, which can lead to coronary artery disease (CAD). The heart not receiving enough oxygen is a result of this narrowing, not increased elasticity.
Choice B Reason:
Coronary arteries decrease in diameter due to the buildup of plaque, which consists of fats, cholesterol, and other substances. This narrowing restricts the flow of blood, oxygen, and nutrients to the heart muscle, leading to symptoms such as chest pain (angina) and shortness of breath. This is the primary mechanism behind coronary artery disease.
Choice C Reason:
This choice is essentially a repetition of Choice B and is correct for the same reasons. The narrowing of the coronary arteries due to plaque buildup leads to insufficient blood flow, causing the heart muscle to receive less oxygen and nutrients.
Choice D Reason:
Manifestations of coronary artery disease are not due to the dilation of coronary arteries. Instead, they are due to the narrowing of these arteries. Increased blood flow and pressure are not typical causes of CAD symptoms. The primary issue is the restricted blood flow due to narrowed arteries.
Choice E Reason:
While it is true that the heart and coronary arteries can weaken over time, leading to poor perfusion and angina, this statement does not accurately describe the primary mechanism of coronary artery disease. The main issue in CAD is the narrowing of the arteries due to plaque buildup, which restricts blood flow to the heart muscle.
Correct Answer is B
Explanation
Choice A Reason:
Conivaptan hydrochloride is a vasopressin receptor antagonist used to treat hyponatremia in patients with SIADH. It works by blocking the action of vasopressin, thereby promoting water excretion without significant loss of sodium. This helps to correct the water imbalance caused by SIADH. Conivaptan is typically administered intravenously and is effective in increasing serum sodium levels.
Choice B Reason:
Vasopressin, also known as antidiuretic hormone (ADH), is contraindicated in patients with SIADH because it exacerbates the condition. SIADH is characterized by excessive release of ADH, leading to water retention and hyponatremia. Administering vasopressin would further increase water reabsorption in the kidneys, worsening the hyponatremia.
Choice C Reason:
Sodium chloride tablets are used to manage hyponatremia in SIADH by increasing sodium intake. This helps to counteract the dilutional hyponatremia caused by excessive water retention. Sodium chloride tablets are often prescribed alongside fluid restriction to help raise serum sodium levels.
Choice D Reason:
Tolvaptan is another vasopressin receptor antagonist used to treat hyponatremia in SIADH. It works similarly to conivaptan by blocking the action of vasopressin, promoting water excretion, and increasing serum sodium levels. Tolvaptan is typically administered orally and is effective in managing SIADH.
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