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 ["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.
Correct Answer is ["Antidiarrheals"]
Explanation
Antidiarrheal medications are the most effective drugs for controlling severe diarrhea. These medications work by slowing down bowel movements and reducing the frequency and liquidity of stools. The two main types of antidiarrheal drugs are:
Loperamide: Loperamide is an over-the-counter antidiarrheal medication that works by slowing down the movement of the intestines and reducing the frequency of bowel movements. It is effective for treating acute diarrhea and traveler's diarrhea.
Bismuth subsalicylate: Bismuth subsalicylate is another over-the-counter medication that can help control diarrhea. It works by reducing inflammation in the intestines and slowing down the passage of stools. Bismuth subsalicylate also has antimicrobial properties, which may help in cases of infectious diarrhea.
These medications are often used in combination with rehydration therapy to manage severe diarrhea effectively. However, it is important to use antidiarrheal medications cautiously and under the guidance of a healthcare professional, as they may not be suitable for all individuals, especially those with certain medical conditions or those taking other medications. Additionally, it is essential to address the underlying cause of diarrhea, especially if it persists or worsens despite treatment with antidiarrheal medications. Consulting a healthcare provider is recommended for proper diagnosis and management of severe diarrhea.
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.