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","D","E"]
Explanation
Choice A reason: Providing at least 5000 kcal/day is essential for a patient with burn injuries. Burns significantly increase the body's metabolic rate and caloric needs to support the healing process and prevent catabolism. Ensuring an adequate caloric intake helps meet the energy demands required for tissue repair and recovery.
Choice B reason: Starting an oral diet on the first day may not be appropriate for all burn patients, particularly those with extensive burns or those who are not yet stable. Nutrition needs should be carefully assessed, and feeding may begin via alternative methods such as enteral nutrition until the patient is ready for oral intake.
Choice C reason: Administering a diet high in protein is crucial for burn patients, as protein is essential for wound healing, maintaining lean body mass, and supporting the immune system. Protein intake should be increased to help repair damaged tissues and promote recovery.
Choice D reason: Collaborating with a registered dietitian is important to create an individualized nutrition plan that meets the specific needs of the burn patient. A dietitian can provide expertise in calculating caloric and protein requirements, recommending appropriate supplements, and monitoring the patient's nutritional status.
Choice E reason: Offering frequent high-calorie snacks helps ensure that the patient meets their increased caloric needs. Small, frequent meals and snacks can be more manageable for patients with reduced appetite or those who have difficulty consuming large meals. High-calorie snacks provide additional energy to support healing and recovery.
Correct Answer is B
Explanation
Choice A reason: A urine output of 40 mL/hr is within the acceptable range, as normal urine output is typically around 30-50 mL/hr. While it should be monitored, it does not indicate an immediate life-threatening issue requiring urgent assessment.
Choice B reason: A blood pressure change from 128/74 to 110/88 mmHg may indicate potential hemodynamic instability. Although the systolic blood pressure has decreased, the diastolic pressure has increased, which can be concerning. This patient may be at risk for developing more significant blood pressure changes or other complications, making this situation the highest priority for assessment.
Choice C reason: An oxygen saturation level of 94% is generally considered acceptable. While it is on the lower end of the normal range, it does not indicate an immediate life-threatening condition. Continuous monitoring is important, but it is not the most urgent situation compared to the blood pressure change.
Choice D reason: A pulse change from 100 to 88 beats/min represents a decrease in heart rate but remains within the normal range for adult heart rate (60-100 beats/min). While this change should be noted and monitored, it is not as urgent as the blood pressure change that may indicate hemodynamic instability.
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