A nurse is assisting in the care of a client who is receiving a dopamine infusion at a low dose for treatment of shock. Which of the following findings is an expected effect of this medication?
Lowered heart rate
Decreased conduction through the AV node
Increased urine output
Vasoconstriction of renal blood vessels
The Correct Answer is C
A) Lowered heart rate:
Dopamine typically increases heart rate as it acts on beta-adrenergic receptors in the heart, leading to increased cardiac contractility and chronotropy. However, at low doses, the effect on heart rate may be minimal compared to higher doses.
B) Decreased conduction through the AV node:
Dopamine may have minimal effects on conduction through the atrioventricular (AV) node, especially at low doses. It primarily acts on adrenergic receptors to increase cardiac contractility and heart rate.
C) Increased urine output.
Dopamine is a medication commonly used to treat shock by improving cardiac output and blood pressure. At low doses, dopamine primarily acts on dopamine receptors in the renal blood vessels, causing vasodilation and increased renal blood flow. This increased renal blood flow leads to increased glomerular filtration rate (GFR) and urine output. Therefore, increased urine output is an expected effect of dopamine infusion at low doses in the treatment of shock.
D) Vasoconstriction of renal blood vessels:
At low doses, dopamine primarily acts on dopamine receptors in the renal blood vessels, causing vasodilation and increased renal blood flow. Vasoconstriction of renal blood vessels is more commonly associated with higher doses of dopamine or with other vasopressor medications such as norepinephrine or phenylephrine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
A. Respiratory rate and pulse: Albuterol is a bronchodilator medication commonly used to relieve bronchospasm in conditions like asthma and chronic obstructive pulmonary disease (COPD). Monitoring the patient's respiratory rate and pulse is essential to assess the response to the medication and any potential adverse effects.
B. Pulse oximetry: Albuterol helps to open the airways and improve oxygenation in patients with bronchospasm. Monitoring oxygen saturation using pulse oximetry provides valuable information about the patient's respiratory status and response to treatment.
C. Capillary refill: Capillary refill is typically assessed to evaluate peripheral perfusion and circulation. While it is an important assessment in certain clinical situations, it is not directly related to monitoring the response to albuterol administration.
D. Glucose: Glucose monitoring is not typically indicated after administering albuterol nebulizer unless the patient has a history of diabetes or there are specific concerns regarding glucose levels.
E. Lung sounds: Assessing lung sounds before and after administering albuterol helps to evaluate the effectiveness of the medication in relieving bronchospasm. Improvement in lung sounds, such as decreased wheezing or clearer breath sounds, indicates a positive response to treatment.
Correct Answer is ["10"]
Explanation
To administer the correct dose of valproic acid, which is 500 mg, when the available oral solution concentration is 250 mg per 5 mL, the nurse needs to calculate the volume of the solution required.
The calculation is as follows: (500 mg) / (250 mg/5 mL) = 2 x 5 mL = 10 mL.
Therefore, the nurse should administer 10 mL of the valproic acid oral solution to deliver a dose of 500 mg.
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