A nurse is teaching a group of nurses about the administration of nitroglycerin. Which of the following routes of administration provides the most rapid onset for the client?
Topical ointment
Sustained-release
Sublingual
Transdermal patch
The Correct Answer is C
Choice A: Topical ointment Topical ointment forms of nitroglycerin are used for their long-acting effects. The medication is absorbed slowly through the skin, providing a steady level of drug in the bloodstream. This form is not designed for rapid relief of acute angina attacks but rather for prevention.
Choice B: Sustained-release Sustained-release forms of nitroglycerin are designed to release the medication slowly over an extended period. This route is also not suitable for treating acute symptoms because it does not provide immediate relief but is used for long-term management of angina pectoris. Nitroglycerin is a medication used primarily to treat angina pectoris (chest pain) and heart failure. It works by relaxing the smooth muscles and dilating the blood vessels, which increases blood flow to the heart and decreases its workload. The route of administration can significantly affect the onset and duration of the medication’s action.
Choice C: Sublingual The sublingual route, where the medication is placed under the tongue, allows for rapid absorption into the bloodstream through the rich supply of blood vessels found in the area. This form of nitroglycerin acts quickly, usually within 1 to 3 minutes, and is the preferred choice for immediate relief of angina pain. When rapid onset is required for relief from acute angina symptoms, the sublingual route is the most appropriate choice for administering nitroglycerin. It provides quick absorption and fast action, making it an essential treatment option for patients experiencing chest pain due to angina.
Choice D: Transdermal patch Transdermal patches release nitroglycerin slowly through the skin and into the bloodstream. Like topical ointments and sustained-release forms, they are used for long-term prophylaxis of angina and not for rapid relief.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Occasional bubbling in the water-seal chamber can indicate an air leak, which is not necessarily a sign of lung re-expansion. It could suggest that the lung has not fully re-expanded or that there is a persistent air leak.
Choice B reason: While the absence of pleuritic chest pain is a positive sign, it is not a definitive indicator of lung re-expansion. Pleuritic chest pain can subside even if the lung has not fully re-expanded.
Choice C reason: No tidaling in the water-seal chamber is a strong indicator that the lung has re-expanded. When the lung is fully expanded, it presses against the chest wall, eliminating the space where air could collect and thus stopping the water level from fluctuating with respiration.
Choice D reason: An oxygen saturation of 95% is within normal limits and suggests adequate oxygenation, but it does not specifically indicate lung re-expansion. Oxygen saturation can be maintained with supplemental oxygen or other supportive measures even if the lung has not fully re-expanded.
Correct Answer is A
Explanation
Choice A: Hyperglycemia The reason hyperglycemia is a risk when the prescribed dwell time is not maintained is due to the glucose present in the dialysate. The dialysate used in PD often contains glucose, which acts as an osmotic agent to facilitate fluid removal from the blood. If the dwell time is too short, there may not be enough time for the glucose to be absorbed, leading to higher levels of glucose in the blood. Conversely, if the dwell time is too long, excessive glucose absorption can occur, also leading to hyperglycemia. For patients with diabetes mellitus, maintaining the prescribed dwell time is essential to manage their blood glucose levels effectively. The normal range for fasting blood glucose is typically between 70 to 99 mg/dL, and for diabetes patients, maintaining blood glucose levels as close to the normal range as possible is crucial to prevent complications.
Choice B: Disequilibrium Syndrome Disequilibrium syndrome is characterized by neurological symptoms resulting from rapid changes in the composition of extracellular fluids during dialysis. This condition is more commonly associated with hemodialysis due to the rapid shifts that can occur with this modality. In PD, the risk of disequilibrium syndrome is significantly lower because the exchange of solutes and fluids is more gradual. Therefore, while important to consider, it is not the primary complication associated with the maintenance of dwell time in PD.
Choice C: Peritonitis Peritonitis, an infection of the peritoneal cavity, is a serious complication of PD but is not directly related to the duration of dwell time. It is typically caused by contamination during the exchange process or catheter-related infections. While proper technique and hygiene are critical in preventing peritonitis, the dwell time itself does not influence the risk of developing this infection.
Choice D: Hyperphosphatemia Hyperphosphatemia refers to elevated levels of phosphate in the blood and is a concern in patients with renal failure due to the kidneys’ inability to excrete phosphate effectively. The dwell time in PD may affect the removal of phosphate to some extent; however, it is not the primary concern related to the maintenance of dwell time. Phosphate binders and dietary restrictions are commonly used to manage phosphate levels in PD patients.
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