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.

Answer and Explanation

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.

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Correct Answer is D

Explanation

Choice A reason: The values pH 7.50, pO2 85, pCO2 35, HCO3 30 mEq/L indicate alkalosis with a high bicarbonate level, which is not consistent with the patient’s slow respiratory rate that would typically lead to respiratory acidosis.

Choice B reason: The values pH 7.30, pO2 90, pCO2 35, HCO3 20 mEq/L indicate metabolic acidosis with normal pCO2, which does not align with the respiratory issue described (hypoventilation).

Choice C reason: The values pH 7.50, pO2 95, pCO2 25, HCO3 22 mEq/L indicate respiratory alkalosis, which is characterized by a low pCO2. This is not consistent with the patient’s hypoventilation, which would lead to elevated pCO2 levels.

Choice D reason: The values pH 7.30, pO2 80, pCO2 55, HCO3 22 mEq/L indicate respiratory acidosis, which aligns with the patient’s hypoventilation due to anesthesia effects and incisional pain. The elevated pCO2 and decreased pH are consistent with reduced respiratory rate and shallow breathing.

A. Rehabilitative B. Acute C. Emergent D. Immediate resuscitative

Correct Answer is B

Explanation

Choice A reason: The rehabilitative phase of burn care focuses on restoring function, improving cosmetic appearance, and achieving the best possible quality of life for the patient. This phase typically begins after the wound has healed and continues for months to years. The care priorities mentioned, such as wound care and nutritional support, indicate that the patient is still in a more active phase of treatment rather than the long-term rehabilitative phase.

Choice B reason: The acute phase of burn care starts after the initial resuscitation and continues until the wound is closed. During this phase, the primary focus is on wound care, nutritional support, and prevention of complications like infection. The goal is to promote healing, prevent infection, and address the patient's nutritional needs to support recovery. This phase aligns with the care priorities mentioned in the question.

Choice C reason: The emergent phase, also known as the resuscitative phase, begins at the time of injury and continues for the first 24-48 hours. The primary focus during this phase is on stabilizing the patient's condition, managing airway and breathing, fluid resuscitation, and addressing immediate life-threatening issues. The care priorities in the question indicate that the patient has moved beyond the initial resuscitative efforts.

Choice D reason: The immediate resuscitative phase overlaps with the emergent phase and focuses on providing immediate life-saving measures to stabilize the patient. This includes fluid resuscitation, airway management, and treating shock. The care priorities mentioned in the question suggest that the patient is beyond the initial resuscitative efforts and is in a more ongoing phase of treatment.

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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?

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