A nurse administers prescribed adenosine to a symptomatic patient in supraventricular tachycardia (SVT). Which response would the nurse assess for as an expected therapeutic response?
Increased heart rate.
Short period of asystole.
Hypertension.
Decreased intraocular pressure.
The Correct Answer is B
Choice A reason: An increased heart rate is not an expected therapeutic response to adenosine. Adenosine is used to slow the heart rate by temporarily blocking the electrical conduction through the atrioventricular (AV) node. This action is crucial in managing supraventricular tachycardia (SVT), as it can help restore a normal heart rhythm. An increased heart rate would suggest that the medication is not working as intended, and the underlying tachycardia may persist or worsen.
Choice B reason: A short period of asystole is the correct and expected therapeutic response when administering adenosine. Adenosine works by briefly stopping the heart's electrical activity, leading to a brief asystole (lack of heartbeat). This allows the heart's natural pacemaker to reset and potentially restore a normal rhythm. Although this can be alarming, it is a known and anticipated effect of the drug, and it typically resolves quickly as the heart resumes normal activity.
Choice C reason: Hypertension is not an expected response to adenosine. Adenosine generally causes vasodilation, which can lower blood pressure. The primary focus of adenosine in the context of SVT is on its cardiac effects rather than influencing blood pressure significantly. If hypertension occurs, it may be unrelated to the administration of adenosine and could indicate another underlying issue that needs to be addressed.
Choice D reason: Decreased intraocular pressure is not a relevant or expected response to adenosine administration in the context of managing SVT. Adenosine's primary effect is on the heart's electrical conduction system, and it does not significantly impact intraocular pressure. The focus should remain on observing the cardiac responses to ensure the medication is effectively managing the SVT.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E","F","G"]
Explanation
Choice A reason: Decreased calcium is expected in end-stage chronic kidney disease (CKD) due to impaired kidney function. The kidneys are responsible for converting vitamin D into its active form, which helps in calcium absorption. Reduced kidney function leads to decreased active vitamin D, resulting in lower calcium levels.
Choice B reason: Decreased blood urea nitrogen (BUN) is not typical in CKD. Instead, BUN levels usually increase because the kidneys are less able to remove urea from the blood. Urea is a waste product of protein metabolism, and elevated BUN is indicative of impaired kidney function.
Choice C reason: Decreased hemoglobin is expected in CKD due to reduced production of erythropoietin by the kidneys. Erythropoietin stimulates the production of red blood cells, and a lack of it leads to anemia, reflected by lower hemoglobin levels.
Choice D reason: Decreased potassium is not typically seen in CKD. In fact, potassium levels often increase because the kidneys are less able to excrete it. Hyperkalemia (high potassium) is a common complication in CKD and requires careful monitoring.
Choice E reason: Elevated creatinine is expected in CKD. Creatinine is a waste product of muscle metabolism, and elevated levels indicate impaired kidney function as the kidneys are less able to clear it from the blood.
Choice F reason: Increased phosphorus is a common finding in CKD due to the kidneys' reduced ability to excrete phosphorus. This can lead to hyperphosphatemia, which can cause secondary hyperparathyroidism and further complications.
Choice G reason: Decreased glomerular filtration rate (GFR) is a hallmark of CKD. GFR measures how well the kidneys are filtering blood, and a lower GFR indicates reduced kidney function. It is used to stage the severity of CKD.
Correct Answer is A
Explanation
Choice A reason: Administering normal saline 500-1000 mL infused over 1 hour is an effective fluid challenge to promote kidney perfusion in patients with acute kidney injury and no signs of fluid overload. This intervention helps increase intravascular volume, improving renal blood flow and potentially enhancing urine output.
Choice B reason: Administering drugs to suppress aldosterone release is not appropriate for promoting kidney perfusion in this context. Suppressing aldosterone could potentially decrease sodium and water reabsorption, which may not be beneficial for improving renal perfusion in a patient with acute kidney injury.
Choice C reason: Having the patient drink several large glasses of water is not the most effective method for a fluid challenge. Oral intake may not provide the rapid volume expansion needed to improve kidney perfusion, especially in a patient with acute kidney injury where fluid balance and perfusion are critical.
Choice D reason: Instilling 500-1000 mL of normal saline through a nasogastric tube is not an appropriate fluid challenge for promoting kidney perfusion. This method is not typically used for volume expansion in the context of acute kidney injury, as it may not provide the rapid intravascular volume increase needed to enhance renal blood flow.
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.