The patient's family is asking questions about the medications used in the treatment for shock. The nurse explains that dopamine is one of the drugs being used and that it works:
(Select All that Apply.)
At high doses, to treat anaphylaxis.
At high doses, to increase cardiac output.
At low doses, to cause increased blood flow to the kidneys.
At low doses, to treat anaphylaxis.
To cause vasoconstriction and increase blood pressure.
Correct Answer : B,C,E
A. At high doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis. Anaphylaxis is typically managed with medications such as epinephrine, antihistamines, and corticosteroids.
B. At high doses, to increase cardiac output: Dopamine is a medication commonly used in the treatment of shock, particularly in cases of hypotension. At higher doses, dopamine acts as a positive inotrope and increases cardiac contractility, thereby improving cardiac output and increasing blood pressure.
C. At low doses, to cause increased blood flow to the kidneys: At lower doses, dopamine primarily acts on dopaminergic receptors in the renal vasculature, leading to vasodilation of the renal blood vessels and increased renal perfusion. This can help improve renal blood flow and urine output, making it beneficial in cases of renal hypoperfusion or acute kidney injury.
D. At low doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis at any dose. Anaphylaxis is managed with medications such as epinephrine, which acts on multiple receptors to reverse the systemic effects of the allergic reaction.
E. To cause vasoconstriction and increase blood pressure: Dopamine can also cause vasoconstriction, particularly at higher doses. This effect is mediated through its action on alpha-adrenergic receptors, leading to peripheral vasoconstriction and an increase in systemic vascular resistance, which in turn helps increase blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
A. The inside surface of the lungs is small, and the dose is concentrated in that area: Inhalation medications are delivered directly to the lungs, where they are rapidly absorbed due to the small surface area and the close proximity of the medication to the lung tissue.
B. There is a large surface area inside the lungs: The lungs have a large surface area for gas exchange, allowing for efficient absorption of inhaled medications into the bloodstream.
C. Inhaled medications are given at very high doses: Inhaled medications are typically given at therapeutic doses appropriate for the patient's condition. While they may be given in higher doses compared to oral medications in some cases, the dosage is carefully adjusted based on factors such as the patient's age, weight, and severity of the condition.
D. Inhaled medications are given with food: Inhaled medications are typically administered separately from meals. Food can interfere with the absorption of inhaled medications and may affect their effectiveness.
E. There is a rich blood supply to the lungs: The lungs have a rich network of blood vessels, known as pulmonary capillaries, which allows for rapid absorption of inhaled medications into the bloodstream.
Correct Answer is C
Explanation
A) Treatment with PPIs to decrease stomach acid:
Proton-pump inhibitors (PPIs) are used to decrease stomach acid production and are commonly prescribed for conditions such as gastroesophageal reflux disease (GERD) and peptic ulcers. However, they do not address the underlying cause of pancreatic insufficiency, which is the deficiency of pancreatic enzymes.
B) Treatment with stimulant laxatives:
Stimulant laxatives are used to stimulate bowel movements and are not indicated for the treatment of pancreatic insufficiency. Pancreatic insufficiency primarily affects the digestion of nutrients rather than bowel motility.
C) Replacement therapy with pancreatic enzymes.
Pancreatic insufficiency occurs when the pancreas does not produce enough digestive enzymes to properly digest food, leading to malabsorption of nutrients. Replacement therapy with pancreatic enzymes is the mainstay of treatment for pancreatic insufficiency. These enzymes, often prescribed in the form of pancreatic enzyme replacement therapy (PERT), help to supplement the deficient enzymes and aid in the digestion of fats, proteins, and carbohydrates.
D) Decrease food intake:
Decreasing food intake is not an appropriate treatment for pancreatic insufficiency. In fact, individuals with pancreatic insufficiency may need to increase their food intake to compensate for malabsorption and ensure adequate nutrition. Restricting food intake would worsen nutritional deficiencies and symptoms associated with malabsorption.
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